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 15*e56ca6bcSChristophe JAILLET #include <linux/kstrtox.h> 16c66ac9dbSNicholas Bellinger #include <linux/module.h> 17c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 18c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 19c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 20c66ac9dbSNicholas Bellinger #include <linux/init.h> 21c66ac9dbSNicholas Bellinger #include <linux/fs.h> 22c66ac9dbSNicholas Bellinger #include <linux/namei.h> 23c66ac9dbSNicholas Bellinger #include <linux/slab.h> 24c66ac9dbSNicholas Bellinger #include <linux/types.h> 25c66ac9dbSNicholas Bellinger #include <linux/delay.h> 26c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 27c66ac9dbSNicholas Bellinger #include <linux/string.h> 28c66ac9dbSNicholas Bellinger #include <linux/parser.h> 29c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 30c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 31e3d6f909SAndy Grover #include <linux/spinlock.h> 32c66ac9dbSNicholas Bellinger 33c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 34c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 35c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 36c66ac9dbSNicholas Bellinger 37e26d99aeSChristoph Hellwig #include "target_core_internal.h" 38c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 39c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 40c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 41f99715acSNicholas Bellinger #include "target_core_xcopy.h" 42c66ac9dbSNicholas Bellinger 4373112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 440a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 4573112edcSNicholas Bellinger { \ 460a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 4773112edcSNicholas Bellinger \ 4873112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 4973112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 5073112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 510a06d430SChristoph Hellwig cit->ct_owner = tb->ops->owner; \ 520a06d430SChristoph Hellwig pr_debug("Setup generic %s\n", __stringify(_name)); \ 530a06d430SChristoph Hellwig } 540a06d430SChristoph Hellwig 550a06d430SChristoph Hellwig #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ 560a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 570a06d430SChristoph Hellwig { \ 580a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 590a06d430SChristoph Hellwig \ 600a06d430SChristoph Hellwig cit->ct_item_ops = _item_ops; \ 610a06d430SChristoph Hellwig cit->ct_group_ops = _group_ops; \ 620a06d430SChristoph Hellwig cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ 630a06d430SChristoph Hellwig cit->ct_owner = tb->ops->owner; \ 6473112edcSNicholas Bellinger pr_debug("Setup generic %s\n", __stringify(_name)); \ 6573112edcSNicholas Bellinger } 6673112edcSNicholas Bellinger 67e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 68e3d6f909SAndy Grover 69d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 70d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 71c66ac9dbSNicholas Bellinger 72e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 73e3d6f909SAndy Grover static struct config_group alua_group; 74e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 75e3d6f909SAndy Grover 7680890c5eSMaurizio Lombardi static unsigned int target_devices; 7780890c5eSMaurizio Lombardi static DEFINE_MUTEX(target_devices_lock); 7880890c5eSMaurizio Lombardi 79c66ac9dbSNicholas Bellinger static inline struct se_hba * 80c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 81c66ac9dbSNicholas Bellinger { 82c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 83c66ac9dbSNicholas Bellinger } 84c66ac9dbSNicholas Bellinger 85c66ac9dbSNicholas Bellinger /* 86c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 87c66ac9dbSNicholas Bellinger */ 882eafd729SChristoph Hellwig static ssize_t target_core_item_version_show(struct config_item *item, 89c66ac9dbSNicholas Bellinger char *page) 90c66ac9dbSNicholas Bellinger { 91c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 92ce8dd25dSChristoph Hellwig " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, 93c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 94c66ac9dbSNicholas Bellinger } 95c66ac9dbSNicholas Bellinger 962eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_core_item_, version); 97c66ac9dbSNicholas Bellinger 98a96e9783SLee Duncan char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT; 99a96e9783SLee Duncan static char db_root_stage[DB_ROOT_LEN]; 100a96e9783SLee Duncan 101a96e9783SLee Duncan static ssize_t target_core_item_dbroot_show(struct config_item *item, 102a96e9783SLee Duncan char *page) 103a96e9783SLee Duncan { 104a96e9783SLee Duncan return sprintf(page, "%s\n", db_root); 105a96e9783SLee Duncan } 106a96e9783SLee Duncan 107a96e9783SLee Duncan static ssize_t target_core_item_dbroot_store(struct config_item *item, 108a96e9783SLee Duncan const char *page, size_t count) 109a96e9783SLee Duncan { 110a96e9783SLee Duncan ssize_t read_bytes; 111a96e9783SLee Duncan struct file *fp; 11280890c5eSMaurizio Lombardi ssize_t r = -EINVAL; 113a96e9783SLee Duncan 11480890c5eSMaurizio Lombardi mutex_lock(&target_devices_lock); 11580890c5eSMaurizio Lombardi if (target_devices) { 11680890c5eSMaurizio Lombardi pr_err("db_root: cannot be changed because it's in use\n"); 11780890c5eSMaurizio Lombardi goto unlock; 118a96e9783SLee Duncan } 119a96e9783SLee Duncan 120a96e9783SLee Duncan if (count > (DB_ROOT_LEN - 1)) { 121a96e9783SLee Duncan pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n", 122a96e9783SLee Duncan (int)count, DB_ROOT_LEN - 1); 12380890c5eSMaurizio Lombardi goto unlock; 124a96e9783SLee Duncan } 125a96e9783SLee Duncan 126a96e9783SLee Duncan read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page); 12780890c5eSMaurizio Lombardi if (!read_bytes) 12880890c5eSMaurizio Lombardi goto unlock; 12980890c5eSMaurizio Lombardi 130a96e9783SLee Duncan if (db_root_stage[read_bytes - 1] == '\n') 131a96e9783SLee Duncan db_root_stage[read_bytes - 1] = '\0'; 132a96e9783SLee Duncan 133a96e9783SLee Duncan /* validate new db root before accepting it */ 134a96e9783SLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 135a96e9783SLee Duncan if (IS_ERR(fp)) { 136a96e9783SLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 13780890c5eSMaurizio Lombardi goto unlock; 138a96e9783SLee Duncan } 13945063097SAl Viro if (!S_ISDIR(file_inode(fp)->i_mode)) { 1408cc3bb07SBart Van Assche filp_close(fp, NULL); 141a96e9783SLee Duncan pr_err("db_root: not a directory: %s\n", db_root_stage); 14280890c5eSMaurizio Lombardi goto unlock; 143a96e9783SLee Duncan } 1448cc3bb07SBart Van Assche filp_close(fp, NULL); 145a96e9783SLee Duncan 146a96e9783SLee Duncan strncpy(db_root, db_root_stage, read_bytes); 14778a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 14878a6295cSLee Duncan 14980890c5eSMaurizio Lombardi r = read_bytes; 15080890c5eSMaurizio Lombardi 15180890c5eSMaurizio Lombardi unlock: 15280890c5eSMaurizio Lombardi mutex_unlock(&target_devices_lock); 15380890c5eSMaurizio Lombardi return r; 154a96e9783SLee Duncan } 155a96e9783SLee Duncan 156a96e9783SLee Duncan CONFIGFS_ATTR(target_core_item_, dbroot); 157a96e9783SLee Duncan 158c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 159c66ac9dbSNicholas Bellinger const char *name) 160c66ac9dbSNicholas Bellinger { 161c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 162c66ac9dbSNicholas Bellinger 1636708bb27SAndy Grover if (!name) 164c66ac9dbSNicholas Bellinger return NULL; 165c66ac9dbSNicholas Bellinger 166c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 167c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 16859a206b4SDavid Disseldorp const char *cmp_name = tf->tf_ops->fabric_alias; 16959a206b4SDavid Disseldorp if (!cmp_name) 17059a206b4SDavid Disseldorp cmp_name = tf->tf_ops->fabric_name; 17159a206b4SDavid Disseldorp if (!strcmp(cmp_name, name)) { 172c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 173c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 174c66ac9dbSNicholas Bellinger return tf; 175c66ac9dbSNicholas Bellinger } 176c66ac9dbSNicholas Bellinger } 177c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 178c66ac9dbSNicholas Bellinger 179c66ac9dbSNicholas Bellinger return NULL; 180c66ac9dbSNicholas Bellinger } 181c66ac9dbSNicholas Bellinger 182c66ac9dbSNicholas Bellinger /* 183c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 184c66ac9dbSNicholas Bellinger */ 185c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 186c66ac9dbSNicholas Bellinger struct config_group *group, 187c66ac9dbSNicholas Bellinger const char *name) 188c66ac9dbSNicholas Bellinger { 189c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 190c66ac9dbSNicholas Bellinger int ret; 191c66ac9dbSNicholas Bellinger 1926708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 193c66ac9dbSNicholas Bellinger " %s\n", group, name); 194e7b7af6eSRoland Dreier 195e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 196e7b7af6eSRoland Dreier if (!tf) { 19762554910SNicholas Bellinger pr_debug("target_core_register_fabric() trying autoload for %s\n", 198e7b7af6eSRoland Dreier name); 199e7b7af6eSRoland Dreier 200c66ac9dbSNicholas Bellinger /* 201c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 202c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 203c66ac9dbSNicholas Bellinger * 204c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 205c66ac9dbSNicholas Bellinger * 206c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 207c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 208c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 209c66ac9dbSNicholas Bellinger */ 210e7b7af6eSRoland Dreier 2116708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 212c66ac9dbSNicholas Bellinger /* 213c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 214c66ac9dbSNicholas Bellinger * following is called: 215c66ac9dbSNicholas Bellinger * 216c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 217c66ac9dbSNicholas Bellinger */ 218c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 219c66ac9dbSNicholas Bellinger if (ret < 0) { 22062554910SNicholas Bellinger pr_debug("request_module() failed for" 221c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 222c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 223c66ac9dbSNicholas Bellinger } 2246708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 225c66ac9dbSNicholas Bellinger /* 226c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 227c66ac9dbSNicholas Bellinger * following is called: 228c66ac9dbSNicholas Bellinger * 229c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 230c66ac9dbSNicholas Bellinger */ 231c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 232c66ac9dbSNicholas Bellinger if (ret < 0) { 23362554910SNicholas Bellinger pr_debug("request_module() failed for" 234c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 235c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 236c66ac9dbSNicholas Bellinger } 237c66ac9dbSNicholas Bellinger } 238c66ac9dbSNicholas Bellinger 239c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 240e7b7af6eSRoland Dreier } 241e7b7af6eSRoland Dreier 2426708bb27SAndy Grover if (!tf) { 24362554910SNicholas Bellinger pr_debug("target_core_get_fabric() failed for %s\n", 244c66ac9dbSNicholas Bellinger name); 245c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 246c66ac9dbSNicholas Bellinger } 2476708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 24859a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 249c66ac9dbSNicholas Bellinger /* 250c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 251c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 252c66ac9dbSNicholas Bellinger */ 2536708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 254968ebe75SChristoph Hellwig &tf->tf_wwn_cit); 255c66ac9dbSNicholas Bellinger 256968ebe75SChristoph Hellwig config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); 2571ae1602dSChristoph Hellwig 258c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 259968ebe75SChristoph Hellwig &tf->tf_discovery_cit); 2601ae1602dSChristoph Hellwig configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group); 261c66ac9dbSNicholas Bellinger 2626f3bf5a2SBart Van Assche pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n", 2636f3bf5a2SBart Van Assche config_item_name(&tf->tf_group.cg_item)); 264c66ac9dbSNicholas Bellinger return &tf->tf_group; 265c66ac9dbSNicholas Bellinger } 266c66ac9dbSNicholas Bellinger 267c66ac9dbSNicholas Bellinger /* 268c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 269c66ac9dbSNicholas Bellinger */ 270c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 271c66ac9dbSNicholas Bellinger struct config_group *group, 272c66ac9dbSNicholas Bellinger struct config_item *item) 273c66ac9dbSNicholas Bellinger { 274c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 275c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 276c66ac9dbSNicholas Bellinger 2776708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 278c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 279c66ac9dbSNicholas Bellinger 2806708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 28159a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 282c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 283c66ac9dbSNicholas Bellinger 2846708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 285c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 286c66ac9dbSNicholas Bellinger 2871ae1602dSChristoph Hellwig configfs_remove_default_groups(&tf->tf_group); 288c66ac9dbSNicholas Bellinger config_item_put(item); 289c66ac9dbSNicholas Bellinger } 290c66ac9dbSNicholas Bellinger 291c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 292c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 293c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 294c66ac9dbSNicholas Bellinger }; 295c66ac9dbSNicholas Bellinger 296c66ac9dbSNicholas Bellinger /* 297c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 298c66ac9dbSNicholas Bellinger */ 299c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 300c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 301a96e9783SLee Duncan &target_core_item_attr_dbroot, 302c66ac9dbSNicholas Bellinger NULL, 303c66ac9dbSNicholas Bellinger }; 304c66ac9dbSNicholas Bellinger 305c66ac9dbSNicholas Bellinger /* 306c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 307c66ac9dbSNicholas Bellinger */ 308ece550b5SBhumika Goyal static const struct config_item_type target_core_fabrics_item = { 309c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 310c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 311c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 312c66ac9dbSNicholas Bellinger }; 313c66ac9dbSNicholas Bellinger 314c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 315c66ac9dbSNicholas Bellinger .su_group = { 316c66ac9dbSNicholas Bellinger .cg_item = { 317c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 318c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 319c66ac9dbSNicholas Bellinger }, 320c66ac9dbSNicholas Bellinger }, 321c66ac9dbSNicholas Bellinger }; 322c66ac9dbSNicholas Bellinger 323d588cf8fSChristoph Hellwig int target_depend_item(struct config_item *item) 324d588cf8fSChristoph Hellwig { 325d588cf8fSChristoph Hellwig return configfs_depend_item(&target_core_fabrics, item); 326d588cf8fSChristoph Hellwig } 327d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_depend_item); 328d588cf8fSChristoph Hellwig 329d588cf8fSChristoph Hellwig void target_undepend_item(struct config_item *item) 330d588cf8fSChristoph Hellwig { 3319a9e3415SKrzysztof Opasiak return configfs_undepend_item(item); 332d588cf8fSChristoph Hellwig } 333d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_undepend_item); 334c66ac9dbSNicholas Bellinger 335c66ac9dbSNicholas Bellinger /*############################################################################## 336c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 337c66ac9dbSNicholas Bellinger //############################################################################*/ 338c66ac9dbSNicholas Bellinger 3399ac8928eSChristoph Hellwig static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) 340c66ac9dbSNicholas Bellinger { 34159a206b4SDavid Disseldorp if (tfo->fabric_alias) { 34259a206b4SDavid Disseldorp if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) { 34359a206b4SDavid Disseldorp pr_err("Passed alias: %s exceeds " 34459a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias); 3459ac8928eSChristoph Hellwig return -EINVAL; 346c66ac9dbSNicholas Bellinger } 347c66ac9dbSNicholas Bellinger } 34830c7ca93SDavid Disseldorp if (!tfo->fabric_name) { 34930c7ca93SDavid Disseldorp pr_err("Missing tfo->fabric_name\n"); 350c66ac9dbSNicholas Bellinger return -EINVAL; 351c66ac9dbSNicholas Bellinger } 35259a206b4SDavid Disseldorp if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) { 35359a206b4SDavid Disseldorp pr_err("Passed name: %s exceeds " 35459a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name); 35559a206b4SDavid Disseldorp return -EINVAL; 35659a206b4SDavid Disseldorp } 3576708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3586708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 359c66ac9dbSNicholas Bellinger return -EINVAL; 360c66ac9dbSNicholas Bellinger } 3616708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3626708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 363c66ac9dbSNicholas Bellinger return -EINVAL; 364c66ac9dbSNicholas Bellinger } 3656708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 3666708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 367c66ac9dbSNicholas Bellinger return -EINVAL; 368c66ac9dbSNicholas Bellinger } 3696708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 3706708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 371c66ac9dbSNicholas Bellinger return -EINVAL; 372c66ac9dbSNicholas Bellinger } 3736708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 3746708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 375c66ac9dbSNicholas Bellinger return -EINVAL; 376c66ac9dbSNicholas Bellinger } 3776708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 3786708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 379c66ac9dbSNicholas Bellinger return -EINVAL; 380c66ac9dbSNicholas Bellinger } 3816708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 3826708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 383c66ac9dbSNicholas Bellinger return -EINVAL; 384c66ac9dbSNicholas Bellinger } 38535462975SChristoph Hellwig if (!tfo->release_cmd) { 3866708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 387c66ac9dbSNicholas Bellinger return -EINVAL; 388c66ac9dbSNicholas Bellinger } 3896708bb27SAndy Grover if (!tfo->sess_get_index) { 3906708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 391c66ac9dbSNicholas Bellinger return -EINVAL; 392c66ac9dbSNicholas Bellinger } 3936708bb27SAndy Grover if (!tfo->write_pending) { 3946708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 395c66ac9dbSNicholas Bellinger return -EINVAL; 396c66ac9dbSNicholas Bellinger } 3976708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 3986708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 399c66ac9dbSNicholas Bellinger return -EINVAL; 400c66ac9dbSNicholas Bellinger } 4016708bb27SAndy Grover if (!tfo->get_cmd_state) { 4026708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 403c66ac9dbSNicholas Bellinger return -EINVAL; 404c66ac9dbSNicholas Bellinger } 4056708bb27SAndy Grover if (!tfo->queue_data_in) { 4066708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 407c66ac9dbSNicholas Bellinger return -EINVAL; 408c66ac9dbSNicholas Bellinger } 4096708bb27SAndy Grover if (!tfo->queue_status) { 4106708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 411c66ac9dbSNicholas Bellinger return -EINVAL; 412c66ac9dbSNicholas Bellinger } 4136708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4146708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 415c66ac9dbSNicholas Bellinger return -EINVAL; 416c66ac9dbSNicholas Bellinger } 417131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 418131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 419131e6abcSNicholas Bellinger return -EINVAL; 420131e6abcSNicholas Bellinger } 4219c28ca4fSNicholas Bellinger if (!tfo->check_stop_free) { 4229c28ca4fSNicholas Bellinger pr_err("Missing tfo->check_stop_free()\n"); 4239c28ca4fSNicholas Bellinger return -EINVAL; 4249c28ca4fSNicholas Bellinger } 425c66ac9dbSNicholas Bellinger /* 426c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 427c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 428c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 429c66ac9dbSNicholas Bellinger */ 4306708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4316708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 432c66ac9dbSNicholas Bellinger return -EINVAL; 433c66ac9dbSNicholas Bellinger } 4346708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4356708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 436c66ac9dbSNicholas Bellinger return -EINVAL; 437c66ac9dbSNicholas Bellinger } 4386708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4396708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 440c66ac9dbSNicholas Bellinger return -EINVAL; 441c66ac9dbSNicholas Bellinger } 4426708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 4436708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 444c66ac9dbSNicholas Bellinger return -EINVAL; 445c66ac9dbSNicholas Bellinger } 446c66ac9dbSNicholas Bellinger 447c66ac9dbSNicholas Bellinger return 0; 448c66ac9dbSNicholas Bellinger } 449c66ac9dbSNicholas Bellinger 4509ac8928eSChristoph Hellwig int target_register_template(const struct target_core_fabric_ops *fo) 451c66ac9dbSNicholas Bellinger { 4529ac8928eSChristoph Hellwig struct target_fabric_configfs *tf; 453c66ac9dbSNicholas Bellinger int ret; 454c66ac9dbSNicholas Bellinger 4559ac8928eSChristoph Hellwig ret = target_fabric_tf_ops_check(fo); 4569ac8928eSChristoph Hellwig if (ret) 457c66ac9dbSNicholas Bellinger return ret; 458c66ac9dbSNicholas Bellinger 4599ac8928eSChristoph Hellwig tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 4609ac8928eSChristoph Hellwig if (!tf) { 4619ac8928eSChristoph Hellwig pr_err("%s: could not allocate memory!\n", __func__); 4629ac8928eSChristoph Hellwig return -ENOMEM; 4639ac8928eSChristoph Hellwig } 4649ac8928eSChristoph Hellwig 4659ac8928eSChristoph Hellwig INIT_LIST_HEAD(&tf->tf_list); 4669ac8928eSChristoph Hellwig atomic_set(&tf->tf_access_cnt, 0); 467ef0caf8dSChristoph Hellwig tf->tf_ops = fo; 4689ac8928eSChristoph Hellwig target_fabric_setup_cits(tf); 4699ac8928eSChristoph Hellwig 4709ac8928eSChristoph Hellwig mutex_lock(&g_tf_lock); 4719ac8928eSChristoph Hellwig list_add_tail(&tf->tf_list, &g_tf_list); 4729ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4739ac8928eSChristoph Hellwig 474c66ac9dbSNicholas Bellinger return 0; 475c66ac9dbSNicholas Bellinger } 4769ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_register_template); 477c66ac9dbSNicholas Bellinger 4789ac8928eSChristoph Hellwig void target_unregister_template(const struct target_core_fabric_ops *fo) 479c66ac9dbSNicholas Bellinger { 4809ac8928eSChristoph Hellwig struct target_fabric_configfs *t; 481c66ac9dbSNicholas Bellinger 482c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 4839ac8928eSChristoph Hellwig list_for_each_entry(t, &g_tf_list, tf_list) { 48459a206b4SDavid Disseldorp if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) { 4859ac8928eSChristoph Hellwig BUG_ON(atomic_read(&t->tf_access_cnt)); 4869ac8928eSChristoph Hellwig list_del(&t->tf_list); 48794509182SNicholas Bellinger mutex_unlock(&g_tf_lock); 48894509182SNicholas Bellinger /* 48994509182SNicholas Bellinger * Wait for any outstanding fabric se_deve_entry->rcu_head 49094509182SNicholas Bellinger * callbacks to complete post kfree_rcu(), before allowing 49194509182SNicholas Bellinger * fabric driver unload of TFO->module to proceed. 49294509182SNicholas Bellinger */ 49394509182SNicholas Bellinger rcu_barrier(); 49480ed33c8SDmitry Bogdanov kfree(t->tf_tpg_base_cit.ct_attrs); 4959ac8928eSChristoph Hellwig kfree(t); 49694509182SNicholas Bellinger return; 497c66ac9dbSNicholas Bellinger } 498c66ac9dbSNicholas Bellinger } 4999ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 5009ac8928eSChristoph Hellwig } 5019ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_unregister_template); 502c66ac9dbSNicholas Bellinger 503c66ac9dbSNicholas Bellinger /*############################################################################## 504c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 505c66ac9dbSNicholas Bellinger //############################################################################*/ 506c66ac9dbSNicholas Bellinger 5072eafd729SChristoph Hellwig static inline struct se_dev_attrib *to_attrib(struct config_item *item) 5082eafd729SChristoph Hellwig { 5092eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_dev_attrib, 5102eafd729SChristoph Hellwig da_group); 5115873c4d1SChristoph Hellwig } 5125873c4d1SChristoph Hellwig 5132eafd729SChristoph Hellwig /* Start functions for struct config_item_type tb_dev_attrib_cit */ 5142eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ 5152eafd729SChristoph Hellwig static ssize_t _name##_show(struct config_item *item, char *page) \ 5162eafd729SChristoph Hellwig { \ 5172eafd729SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ 5182eafd729SChristoph Hellwig } 5193effdb90SChristoph Hellwig 5202eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); 5212eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); 5222eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); 5232eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); 5242eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); 5252eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); 5262eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); 5272eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); 5282eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); 5292eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); 5302eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); 531b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr); 5322eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); 5332eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); 534056e8924SDmitry Monakhov DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); 5352eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); 5362eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); 5372eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); 5382eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); 5392eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); 5402eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(block_size); 5412eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); 5422eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); 5432eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); 5442eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); 5452eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); 5462eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); 5472eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); 5482eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); 549e6f41633SJamie Pocas DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); 5502eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); 551bd217b8cSDmitry Bogdanov DEF_CONFIGFS_ATTRIB_SHOW(emulate_rsoc); 5522eafd729SChristoph Hellwig 5532eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ 5542eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 5555873c4d1SChristoph Hellwig size_t count) \ 5565873c4d1SChristoph Hellwig { \ 5572eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5583effdb90SChristoph Hellwig u32 val; \ 5595873c4d1SChristoph Hellwig int ret; \ 5605873c4d1SChristoph Hellwig \ 5613effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); \ 5623effdb90SChristoph Hellwig if (ret < 0) \ 5633effdb90SChristoph Hellwig return ret; \ 5643effdb90SChristoph Hellwig da->_name = val; \ 5653effdb90SChristoph Hellwig return count; \ 5665873c4d1SChristoph Hellwig } 5675873c4d1SChristoph Hellwig 5682eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); 5692eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); 5702eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); 5712eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); 5722eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); 5735873c4d1SChristoph Hellwig 5742eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ 5752eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page, \ 5763effdb90SChristoph Hellwig size_t count) \ 5773effdb90SChristoph Hellwig { \ 5782eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5793effdb90SChristoph Hellwig bool flag; \ 5803effdb90SChristoph Hellwig int ret; \ 5813effdb90SChristoph Hellwig \ 582*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); \ 5833effdb90SChristoph Hellwig if (ret < 0) \ 5843effdb90SChristoph Hellwig return ret; \ 5853effdb90SChristoph Hellwig da->_name = flag; \ 5863effdb90SChristoph Hellwig return count; \ 5873effdb90SChristoph Hellwig } 5883effdb90SChristoph Hellwig 5892eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); 5902eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); 5912eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); 592b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr); 5932eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); 5942eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); 5953effdb90SChristoph Hellwig 5962eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ 5972eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 5983effdb90SChristoph Hellwig size_t count) \ 5993effdb90SChristoph Hellwig { \ 6003effdb90SChristoph Hellwig printk_once(KERN_WARNING \ 601234bdbc4SChristophe Vu-Brugier "ignoring deprecated %s attribute\n", \ 602234bdbc4SChristophe Vu-Brugier __stringify(_name)); \ 6033effdb90SChristoph Hellwig return count; \ 6043effdb90SChristoph Hellwig } 6053effdb90SChristoph Hellwig 6062eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); 6072eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); 6083effdb90SChristoph Hellwig 6093effdb90SChristoph Hellwig static void dev_set_t10_wwn_model_alias(struct se_device *dev) 6103effdb90SChristoph Hellwig { 6113effdb90SChristoph Hellwig const char *configname; 6123effdb90SChristoph Hellwig 6133effdb90SChristoph Hellwig configname = config_item_name(&dev->dev_group.cg_item); 614b2da4abfSDavid Disseldorp if (strlen(configname) >= INQUIRY_MODEL_LEN) { 6153effdb90SChristoph Hellwig pr_warn("dev[%p]: Backstore name '%s' is too long for " 616b2da4abfSDavid Disseldorp "INQUIRY_MODEL, truncating to 15 characters\n", dev, 6173effdb90SChristoph Hellwig configname); 6183effdb90SChristoph Hellwig } 619b2da4abfSDavid Disseldorp /* 620b2da4abfSDavid Disseldorp * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) 621b2da4abfSDavid Disseldorp * here without potentially breaking existing setups, so continue to 622b2da4abfSDavid Disseldorp * truncate one byte shorter than what can be carried in INQUIRY. 623b2da4abfSDavid Disseldorp */ 624b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); 6253effdb90SChristoph Hellwig } 6263effdb90SChristoph Hellwig 6272eafd729SChristoph Hellwig static ssize_t emulate_model_alias_store(struct config_item *item, 6283effdb90SChristoph Hellwig const char *page, size_t count) 6293effdb90SChristoph Hellwig { 6302eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6313effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 6323effdb90SChristoph Hellwig bool flag; 6333effdb90SChristoph Hellwig int ret; 6343effdb90SChristoph Hellwig 6353effdb90SChristoph Hellwig if (dev->export_count) { 6363effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change model alias" 6373effdb90SChristoph Hellwig " while export_count is %d\n", 6383effdb90SChristoph Hellwig dev, dev->export_count); 6393effdb90SChristoph Hellwig return -EINVAL; 6403effdb90SChristoph Hellwig } 6413effdb90SChristoph Hellwig 642*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 6433effdb90SChristoph Hellwig if (ret < 0) 6443effdb90SChristoph Hellwig return ret; 6453effdb90SChristoph Hellwig 646b2da4abfSDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 6473effdb90SChristoph Hellwig if (flag) { 6483effdb90SChristoph Hellwig dev_set_t10_wwn_model_alias(dev); 6493effdb90SChristoph Hellwig } else { 650b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, 651b2da4abfSDavid Disseldorp sizeof(dev->t10_wwn.model)); 6523effdb90SChristoph Hellwig } 6533effdb90SChristoph Hellwig da->emulate_model_alias = flag; 6543effdb90SChristoph Hellwig return count; 6553effdb90SChristoph Hellwig } 6563effdb90SChristoph Hellwig 6572eafd729SChristoph Hellwig static ssize_t emulate_write_cache_store(struct config_item *item, 6583effdb90SChristoph Hellwig const char *page, size_t count) 6593effdb90SChristoph Hellwig { 6602eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6613effdb90SChristoph Hellwig bool flag; 6623effdb90SChristoph Hellwig int ret; 6633effdb90SChristoph Hellwig 664*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 6653effdb90SChristoph Hellwig if (ret < 0) 6663effdb90SChristoph Hellwig return ret; 6673effdb90SChristoph Hellwig 6683effdb90SChristoph Hellwig if (flag && da->da_dev->transport->get_write_cache) { 6693effdb90SChristoph Hellwig pr_err("emulate_write_cache not supported for this device\n"); 6703effdb90SChristoph Hellwig return -EINVAL; 6713effdb90SChristoph Hellwig } 6723effdb90SChristoph Hellwig 6733effdb90SChristoph Hellwig da->emulate_write_cache = flag; 6743effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", 6753effdb90SChristoph Hellwig da->da_dev, flag); 6763effdb90SChristoph Hellwig return count; 6773effdb90SChristoph Hellwig } 6783effdb90SChristoph Hellwig 6792eafd729SChristoph Hellwig static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, 6803effdb90SChristoph Hellwig const char *page, size_t count) 6813effdb90SChristoph Hellwig { 6822eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6833effdb90SChristoph Hellwig u32 val; 6843effdb90SChristoph Hellwig int ret; 6853effdb90SChristoph Hellwig 6863effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 6873effdb90SChristoph Hellwig if (ret < 0) 6883effdb90SChristoph Hellwig return ret; 6893effdb90SChristoph Hellwig 6901bf630fdSDavid Disseldorp if (val != TARGET_UA_INTLCK_CTRL_CLEAR 6911bf630fdSDavid Disseldorp && val != TARGET_UA_INTLCK_CTRL_NO_CLEAR 6921bf630fdSDavid Disseldorp && val != TARGET_UA_INTLCK_CTRL_ESTABLISH_UA) { 6933effdb90SChristoph Hellwig pr_err("Illegal value %d\n", val); 6943effdb90SChristoph Hellwig return -EINVAL; 6953effdb90SChristoph Hellwig } 6963effdb90SChristoph Hellwig 6973effdb90SChristoph Hellwig if (da->da_dev->export_count) { 6983effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 6993effdb90SChristoph Hellwig " UA_INTRLCK_CTRL while export_count is %d\n", 7003effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 7013effdb90SChristoph Hellwig return -EINVAL; 7023effdb90SChristoph Hellwig } 7033effdb90SChristoph Hellwig da->emulate_ua_intlck_ctrl = val; 7043effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", 7053effdb90SChristoph Hellwig da->da_dev, val); 7063effdb90SChristoph Hellwig return count; 7073effdb90SChristoph Hellwig } 7083effdb90SChristoph Hellwig 7092eafd729SChristoph Hellwig static ssize_t emulate_tas_store(struct config_item *item, 7103effdb90SChristoph Hellwig const char *page, size_t count) 7113effdb90SChristoph Hellwig { 7122eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7133effdb90SChristoph Hellwig bool flag; 7143effdb90SChristoph Hellwig int ret; 7153effdb90SChristoph Hellwig 716*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 7173effdb90SChristoph Hellwig if (ret < 0) 7183effdb90SChristoph Hellwig return ret; 7193effdb90SChristoph Hellwig 7203effdb90SChristoph Hellwig if (da->da_dev->export_count) { 7213effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TAS while" 7223effdb90SChristoph Hellwig " export_count is %d\n", 7233effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 7243effdb90SChristoph Hellwig return -EINVAL; 7253effdb90SChristoph Hellwig } 7263effdb90SChristoph Hellwig da->emulate_tas = flag; 7273effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", 7283effdb90SChristoph Hellwig da->da_dev, flag ? "Enabled" : "Disabled"); 7293effdb90SChristoph Hellwig 7303effdb90SChristoph Hellwig return count; 7313effdb90SChristoph Hellwig } 7323effdb90SChristoph Hellwig 7332eafd729SChristoph Hellwig static ssize_t emulate_tpu_store(struct config_item *item, 7343effdb90SChristoph Hellwig const char *page, size_t count) 7353effdb90SChristoph Hellwig { 7362eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 73734bd1dcaSMike Christie struct se_device *dev = da->da_dev; 7383effdb90SChristoph Hellwig bool flag; 7393effdb90SChristoph Hellwig int ret; 7403effdb90SChristoph Hellwig 741*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 7423effdb90SChristoph Hellwig if (ret < 0) 7433effdb90SChristoph Hellwig return ret; 7443effdb90SChristoph Hellwig 7453effdb90SChristoph Hellwig /* 7463effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7473effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7483effdb90SChristoph Hellwig */ 7493effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 75034bd1dcaSMike Christie if (!dev->transport->configure_unmap || 75134bd1dcaSMike Christie !dev->transport->configure_unmap(dev)) { 7523effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7533effdb90SChristoph Hellwig return -ENOSYS; 7543effdb90SChristoph Hellwig } 75534bd1dcaSMike Christie } 7563effdb90SChristoph Hellwig 7573effdb90SChristoph Hellwig da->emulate_tpu = flag; 7583effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", 7593effdb90SChristoph Hellwig da->da_dev, flag); 7603effdb90SChristoph Hellwig return count; 7613effdb90SChristoph Hellwig } 7623effdb90SChristoph Hellwig 7632eafd729SChristoph Hellwig static ssize_t emulate_tpws_store(struct config_item *item, 7643effdb90SChristoph Hellwig const char *page, size_t count) 7653effdb90SChristoph Hellwig { 7662eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 76734bd1dcaSMike Christie struct se_device *dev = da->da_dev; 7683effdb90SChristoph Hellwig bool flag; 7693effdb90SChristoph Hellwig int ret; 7703effdb90SChristoph Hellwig 771*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 7723effdb90SChristoph Hellwig if (ret < 0) 7733effdb90SChristoph Hellwig return ret; 7743effdb90SChristoph Hellwig 7753effdb90SChristoph Hellwig /* 7763effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7773effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7783effdb90SChristoph Hellwig */ 7793effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 78034bd1dcaSMike Christie if (!dev->transport->configure_unmap || 78134bd1dcaSMike Christie !dev->transport->configure_unmap(dev)) { 7823effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7833effdb90SChristoph Hellwig return -ENOSYS; 7843effdb90SChristoph Hellwig } 78534bd1dcaSMike Christie } 7863effdb90SChristoph Hellwig 7873effdb90SChristoph Hellwig da->emulate_tpws = flag; 7883effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", 7893effdb90SChristoph Hellwig da->da_dev, flag); 7903effdb90SChristoph Hellwig return count; 7913effdb90SChristoph Hellwig } 7923effdb90SChristoph Hellwig 7932eafd729SChristoph Hellwig static ssize_t pi_prot_type_store(struct config_item *item, 7943effdb90SChristoph Hellwig const char *page, size_t count) 7953effdb90SChristoph Hellwig { 7962eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7973effdb90SChristoph Hellwig int old_prot = da->pi_prot_type, ret; 7983effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 7993effdb90SChristoph Hellwig u32 flag; 8003effdb90SChristoph Hellwig 8013effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &flag); 8023effdb90SChristoph Hellwig if (ret < 0) 8033effdb90SChristoph Hellwig return ret; 8043effdb90SChristoph Hellwig 8053effdb90SChristoph Hellwig if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { 8063effdb90SChristoph Hellwig pr_err("Illegal value %d for pi_prot_type\n", flag); 8073effdb90SChristoph Hellwig return -EINVAL; 8083effdb90SChristoph Hellwig } 8093effdb90SChristoph Hellwig if (flag == 2) { 8103effdb90SChristoph Hellwig pr_err("DIF TYPE2 protection currently not supported\n"); 8113effdb90SChristoph Hellwig return -ENOSYS; 8123effdb90SChristoph Hellwig } 8133effdb90SChristoph Hellwig if (da->hw_pi_prot_type) { 8143effdb90SChristoph Hellwig pr_warn("DIF protection enabled on underlying hardware," 8153effdb90SChristoph Hellwig " ignoring\n"); 8163effdb90SChristoph Hellwig return count; 8173effdb90SChristoph Hellwig } 8183effdb90SChristoph Hellwig if (!dev->transport->init_prot || !dev->transport->free_prot) { 8193effdb90SChristoph Hellwig /* 0 is only allowed value for non-supporting backends */ 8203effdb90SChristoph Hellwig if (flag == 0) 821bc1a7d6aSAndy Grover return count; 8223effdb90SChristoph Hellwig 8233effdb90SChristoph Hellwig pr_err("DIF protection not supported by backend: %s\n", 8243effdb90SChristoph Hellwig dev->transport->name); 8253effdb90SChristoph Hellwig return -ENOSYS; 8263effdb90SChristoph Hellwig } 827cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8283effdb90SChristoph Hellwig pr_err("DIF protection requires device to be configured\n"); 8293effdb90SChristoph Hellwig return -ENODEV; 8303effdb90SChristoph Hellwig } 8313effdb90SChristoph Hellwig if (dev->export_count) { 8323effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device PROT type while" 8333effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8343effdb90SChristoph Hellwig return -EINVAL; 8353effdb90SChristoph Hellwig } 8363effdb90SChristoph Hellwig 8373effdb90SChristoph Hellwig da->pi_prot_type = flag; 8383effdb90SChristoph Hellwig 8393effdb90SChristoph Hellwig if (flag && !old_prot) { 8403effdb90SChristoph Hellwig ret = dev->transport->init_prot(dev); 8413effdb90SChristoph Hellwig if (ret) { 8423effdb90SChristoph Hellwig da->pi_prot_type = old_prot; 843056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8443effdb90SChristoph Hellwig return ret; 8453effdb90SChristoph Hellwig } 8463effdb90SChristoph Hellwig 8473effdb90SChristoph Hellwig } else if (!flag && old_prot) { 8483effdb90SChristoph Hellwig dev->transport->free_prot(dev); 8493effdb90SChristoph Hellwig } 8503effdb90SChristoph Hellwig 851056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8523effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); 8533effdb90SChristoph Hellwig return count; 8543effdb90SChristoph Hellwig } 8553effdb90SChristoph Hellwig 856b6cd7f34SDavid Disseldorp /* always zero, but attr needs to remain RW to avoid userspace breakage */ 857b6cd7f34SDavid Disseldorp static ssize_t pi_prot_format_show(struct config_item *item, char *page) 858b6cd7f34SDavid Disseldorp { 859b6cd7f34SDavid Disseldorp return snprintf(page, PAGE_SIZE, "0\n"); 860b6cd7f34SDavid Disseldorp } 861b6cd7f34SDavid Disseldorp 8622eafd729SChristoph Hellwig static ssize_t pi_prot_format_store(struct config_item *item, 8633effdb90SChristoph Hellwig const char *page, size_t count) 8643effdb90SChristoph Hellwig { 8652eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 8663effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 8673effdb90SChristoph Hellwig bool flag; 8683effdb90SChristoph Hellwig int ret; 8693effdb90SChristoph Hellwig 870*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 8713effdb90SChristoph Hellwig if (ret < 0) 8723effdb90SChristoph Hellwig return ret; 8733effdb90SChristoph Hellwig 8743effdb90SChristoph Hellwig if (!flag) 8753effdb90SChristoph Hellwig return count; 8763effdb90SChristoph Hellwig 8773effdb90SChristoph Hellwig if (!dev->transport->format_prot) { 8783effdb90SChristoph Hellwig pr_err("DIF protection format not supported by backend %s\n", 8793effdb90SChristoph Hellwig dev->transport->name); 8803effdb90SChristoph Hellwig return -ENOSYS; 8813effdb90SChristoph Hellwig } 882cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8833effdb90SChristoph Hellwig pr_err("DIF protection format requires device to be configured\n"); 8843effdb90SChristoph Hellwig return -ENODEV; 8853effdb90SChristoph Hellwig } 8863effdb90SChristoph Hellwig if (dev->export_count) { 8873effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to format SE Device PROT type while" 8883effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8893effdb90SChristoph Hellwig return -EINVAL; 8903effdb90SChristoph Hellwig } 8913effdb90SChristoph Hellwig 8923effdb90SChristoph Hellwig ret = dev->transport->format_prot(dev); 8933effdb90SChristoph Hellwig if (ret) 8943effdb90SChristoph Hellwig return ret; 8953effdb90SChristoph Hellwig 8963effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); 8973effdb90SChristoph Hellwig return count; 8983effdb90SChristoph Hellwig } 8993effdb90SChristoph Hellwig 900056e8924SDmitry Monakhov static ssize_t pi_prot_verify_store(struct config_item *item, 901056e8924SDmitry Monakhov const char *page, size_t count) 902056e8924SDmitry Monakhov { 903056e8924SDmitry Monakhov struct se_dev_attrib *da = to_attrib(item); 904056e8924SDmitry Monakhov bool flag; 905056e8924SDmitry Monakhov int ret; 906056e8924SDmitry Monakhov 907*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 908056e8924SDmitry Monakhov if (ret < 0) 909056e8924SDmitry Monakhov return ret; 910056e8924SDmitry Monakhov 911056e8924SDmitry Monakhov if (!flag) { 912056e8924SDmitry Monakhov da->pi_prot_verify = flag; 913056e8924SDmitry Monakhov return count; 914056e8924SDmitry Monakhov } 915056e8924SDmitry Monakhov if (da->hw_pi_prot_type) { 916056e8924SDmitry Monakhov pr_warn("DIF protection enabled on underlying hardware," 917056e8924SDmitry Monakhov " ignoring\n"); 918056e8924SDmitry Monakhov return count; 919056e8924SDmitry Monakhov } 920056e8924SDmitry Monakhov if (!da->pi_prot_type) { 921056e8924SDmitry Monakhov pr_warn("DIF protection not supported by backend, ignoring\n"); 922056e8924SDmitry Monakhov return count; 923056e8924SDmitry Monakhov } 924056e8924SDmitry Monakhov da->pi_prot_verify = flag; 925056e8924SDmitry Monakhov 926056e8924SDmitry Monakhov return count; 927056e8924SDmitry Monakhov } 928056e8924SDmitry Monakhov 9292eafd729SChristoph Hellwig static ssize_t force_pr_aptpl_store(struct config_item *item, 9303effdb90SChristoph Hellwig const char *page, size_t count) 9313effdb90SChristoph Hellwig { 9322eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9333effdb90SChristoph Hellwig bool flag; 9343effdb90SChristoph Hellwig int ret; 9353effdb90SChristoph Hellwig 936*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 9373effdb90SChristoph Hellwig if (ret < 0) 9383effdb90SChristoph Hellwig return ret; 9393effdb90SChristoph Hellwig if (da->da_dev->export_count) { 9403effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to set force_pr_aptpl while" 9413effdb90SChristoph Hellwig " export_count is %d\n", 9423effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 9433effdb90SChristoph Hellwig return -EINVAL; 9443effdb90SChristoph Hellwig } 9453effdb90SChristoph Hellwig 9463effdb90SChristoph Hellwig da->force_pr_aptpl = flag; 9473effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); 9483effdb90SChristoph Hellwig return count; 9493effdb90SChristoph Hellwig } 9503effdb90SChristoph Hellwig 9512eafd729SChristoph Hellwig static ssize_t emulate_rest_reord_store(struct config_item *item, 9523effdb90SChristoph Hellwig const char *page, size_t count) 9533effdb90SChristoph Hellwig { 9542eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9553effdb90SChristoph Hellwig bool flag; 9563effdb90SChristoph Hellwig int ret; 9573effdb90SChristoph Hellwig 958*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 9593effdb90SChristoph Hellwig if (ret < 0) 9603effdb90SChristoph Hellwig return ret; 9613effdb90SChristoph Hellwig 9623effdb90SChristoph Hellwig if (flag != 0) { 9633effdb90SChristoph Hellwig printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" 9643effdb90SChristoph Hellwig " reordering not implemented\n", da->da_dev); 9653effdb90SChristoph Hellwig return -ENOSYS; 9663effdb90SChristoph Hellwig } 9673effdb90SChristoph Hellwig da->emulate_rest_reord = flag; 9683effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", 9693effdb90SChristoph Hellwig da->da_dev, flag); 9703effdb90SChristoph Hellwig return count; 9713effdb90SChristoph Hellwig } 9723effdb90SChristoph Hellwig 973e6f41633SJamie Pocas static ssize_t unmap_zeroes_data_store(struct config_item *item, 974e6f41633SJamie Pocas const char *page, size_t count) 975e6f41633SJamie Pocas { 976e6f41633SJamie Pocas struct se_dev_attrib *da = to_attrib(item); 97734bd1dcaSMike Christie struct se_device *dev = da->da_dev; 978e6f41633SJamie Pocas bool flag; 979e6f41633SJamie Pocas int ret; 980e6f41633SJamie Pocas 981*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 982e6f41633SJamie Pocas if (ret < 0) 983e6f41633SJamie Pocas return ret; 984e6f41633SJamie Pocas 985e6f41633SJamie Pocas if (da->da_dev->export_count) { 986e6f41633SJamie Pocas pr_err("dev[%p]: Unable to change SE Device" 987e6f41633SJamie Pocas " unmap_zeroes_data while export_count is %d\n", 988e6f41633SJamie Pocas da->da_dev, da->da_dev->export_count); 989e6f41633SJamie Pocas return -EINVAL; 990e6f41633SJamie Pocas } 991e6f41633SJamie Pocas /* 992e6f41633SJamie Pocas * We expect this value to be non-zero when generic Block Layer 993e6f41633SJamie Pocas * Discard supported is detected iblock_configure_device(). 994e6f41633SJamie Pocas */ 995e6f41633SJamie Pocas if (flag && !da->max_unmap_block_desc_count) { 99634bd1dcaSMike Christie if (!dev->transport->configure_unmap || 99734bd1dcaSMike Christie !dev->transport->configure_unmap(dev)) { 99834bd1dcaSMike Christie pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set because max_unmap_block_desc_count is zero\n", 999e6f41633SJamie Pocas da->da_dev); 1000e6f41633SJamie Pocas return -ENOSYS; 1001e6f41633SJamie Pocas } 100234bd1dcaSMike Christie } 1003e6f41633SJamie Pocas da->unmap_zeroes_data = flag; 1004e6f41633SJamie Pocas pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", 1005e6f41633SJamie Pocas da->da_dev, flag); 10062e498f25SNicholas Bellinger return count; 1007e6f41633SJamie Pocas } 1008e6f41633SJamie Pocas 10093effdb90SChristoph Hellwig /* 10103effdb90SChristoph Hellwig * Note, this can only be called on unexported SE Device Object. 10113effdb90SChristoph Hellwig */ 10122eafd729SChristoph Hellwig static ssize_t queue_depth_store(struct config_item *item, 10133effdb90SChristoph Hellwig const char *page, size_t count) 10143effdb90SChristoph Hellwig { 10152eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10163effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 10173effdb90SChristoph Hellwig u32 val; 10183effdb90SChristoph Hellwig int ret; 10193effdb90SChristoph Hellwig 10203effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10213effdb90SChristoph Hellwig if (ret < 0) 10223effdb90SChristoph Hellwig return ret; 10233effdb90SChristoph Hellwig 10243effdb90SChristoph Hellwig if (dev->export_count) { 10253effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TCQ while" 10263effdb90SChristoph Hellwig " export_count is %d\n", 10273effdb90SChristoph Hellwig dev, dev->export_count); 10283effdb90SChristoph Hellwig return -EINVAL; 10293effdb90SChristoph Hellwig } 10303effdb90SChristoph Hellwig if (!val) { 10313effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); 10323effdb90SChristoph Hellwig return -EINVAL; 10333effdb90SChristoph Hellwig } 10343effdb90SChristoph Hellwig 10353effdb90SChristoph Hellwig if (val > dev->dev_attrib.queue_depth) { 10363effdb90SChristoph Hellwig if (val > dev->dev_attrib.hw_queue_depth) { 10373effdb90SChristoph Hellwig pr_err("dev[%p]: Passed queue_depth:" 10383effdb90SChristoph Hellwig " %u exceeds TCM/SE_Device MAX" 10393effdb90SChristoph Hellwig " TCQ: %u\n", dev, val, 10403effdb90SChristoph Hellwig dev->dev_attrib.hw_queue_depth); 10413effdb90SChristoph Hellwig return -EINVAL; 10423effdb90SChristoph Hellwig } 10433effdb90SChristoph Hellwig } 10443effdb90SChristoph Hellwig da->queue_depth = dev->queue_depth = val; 10453effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); 10463effdb90SChristoph Hellwig return count; 10473effdb90SChristoph Hellwig } 10483effdb90SChristoph Hellwig 10492eafd729SChristoph Hellwig static ssize_t optimal_sectors_store(struct config_item *item, 10503effdb90SChristoph Hellwig const char *page, size_t count) 10513effdb90SChristoph Hellwig { 10522eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10533effdb90SChristoph Hellwig u32 val; 10543effdb90SChristoph Hellwig int ret; 10553effdb90SChristoph Hellwig 10563effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10573effdb90SChristoph Hellwig if (ret < 0) 10583effdb90SChristoph Hellwig return ret; 10593effdb90SChristoph Hellwig 10603effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10613effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 10623effdb90SChristoph Hellwig " optimal_sectors while export_count is %d\n", 10633effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10643effdb90SChristoph Hellwig return -EINVAL; 10653effdb90SChristoph Hellwig } 10663effdb90SChristoph Hellwig if (val > da->hw_max_sectors) { 10673effdb90SChristoph Hellwig pr_err("dev[%p]: Passed optimal_sectors %u cannot be" 10683effdb90SChristoph Hellwig " greater than hw_max_sectors: %u\n", 10693effdb90SChristoph Hellwig da->da_dev, val, da->hw_max_sectors); 10703effdb90SChristoph Hellwig return -EINVAL; 10713effdb90SChristoph Hellwig } 10723effdb90SChristoph Hellwig 10733effdb90SChristoph Hellwig da->optimal_sectors = val; 10743effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", 10753effdb90SChristoph Hellwig da->da_dev, val); 10763effdb90SChristoph Hellwig return count; 10773effdb90SChristoph Hellwig } 10783effdb90SChristoph Hellwig 10792eafd729SChristoph Hellwig static ssize_t block_size_store(struct config_item *item, 10803effdb90SChristoph Hellwig const char *page, size_t count) 10813effdb90SChristoph Hellwig { 10822eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10833effdb90SChristoph Hellwig u32 val; 10843effdb90SChristoph Hellwig int ret; 10853effdb90SChristoph Hellwig 10863effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10873effdb90SChristoph Hellwig if (ret < 0) 10883effdb90SChristoph Hellwig return ret; 10893effdb90SChristoph Hellwig 10903effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10913effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device block_size" 10923effdb90SChristoph Hellwig " while export_count is %d\n", 10933effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10943effdb90SChristoph Hellwig return -EINVAL; 10953effdb90SChristoph Hellwig } 10963effdb90SChristoph Hellwig 10973effdb90SChristoph Hellwig if (val != 512 && val != 1024 && val != 2048 && val != 4096) { 10983effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal value for block_device: %u" 10993effdb90SChristoph Hellwig " for SE device, must be 512, 1024, 2048 or 4096\n", 11003effdb90SChristoph Hellwig da->da_dev, val); 11013effdb90SChristoph Hellwig return -EINVAL; 11023effdb90SChristoph Hellwig } 11033effdb90SChristoph Hellwig 11043effdb90SChristoph Hellwig da->block_size = val; 11053effdb90SChristoph Hellwig if (da->max_bytes_per_io) 11063effdb90SChristoph Hellwig da->hw_max_sectors = da->max_bytes_per_io / val; 11073effdb90SChristoph Hellwig 11083effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device block_size changed to %u\n", 11093effdb90SChristoph Hellwig da->da_dev, val); 11103effdb90SChristoph Hellwig return count; 11113effdb90SChristoph Hellwig } 11125873c4d1SChristoph Hellwig 1113c17d5d5fSMike Christie static ssize_t alua_support_show(struct config_item *item, char *page) 1114c17d5d5fSMike Christie { 1115c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 111669088a04SBodo Stroesser u8 flags = da->da_dev->transport_flags; 1117c17d5d5fSMike Christie 1118c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1119c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); 1120c17d5d5fSMike Christie } 1121c17d5d5fSMike Christie 1122356ba2a8SBodo Stroesser static ssize_t alua_support_store(struct config_item *item, 1123356ba2a8SBodo Stroesser const char *page, size_t count) 1124356ba2a8SBodo Stroesser { 1125356ba2a8SBodo Stroesser struct se_dev_attrib *da = to_attrib(item); 1126356ba2a8SBodo Stroesser struct se_device *dev = da->da_dev; 1127ef7ae7f7SMaurizio Lombardi bool flag, oldflag; 1128356ba2a8SBodo Stroesser int ret; 1129356ba2a8SBodo Stroesser 1130*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 1131ef7ae7f7SMaurizio Lombardi if (ret < 0) 1132ef7ae7f7SMaurizio Lombardi return ret; 1133ef7ae7f7SMaurizio Lombardi 1134ef7ae7f7SMaurizio Lombardi oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA); 1135ef7ae7f7SMaurizio Lombardi if (flag == oldflag) 1136ef7ae7f7SMaurizio Lombardi return count; 1137ef7ae7f7SMaurizio Lombardi 1138356ba2a8SBodo Stroesser if (!(dev->transport->transport_flags_changeable & 1139356ba2a8SBodo Stroesser TRANSPORT_FLAG_PASSTHROUGH_ALUA)) { 1140356ba2a8SBodo Stroesser pr_err("dev[%p]: Unable to change SE Device alua_support:" 1141356ba2a8SBodo Stroesser " alua_support has fixed value\n", dev); 1142ef7ae7f7SMaurizio Lombardi return -ENOSYS; 1143356ba2a8SBodo Stroesser } 1144356ba2a8SBodo Stroesser 1145356ba2a8SBodo Stroesser if (flag) 1146356ba2a8SBodo Stroesser dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_ALUA; 1147356ba2a8SBodo Stroesser else 1148356ba2a8SBodo Stroesser dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_ALUA; 1149356ba2a8SBodo Stroesser return count; 1150356ba2a8SBodo Stroesser } 1151356ba2a8SBodo Stroesser 1152c17d5d5fSMike Christie static ssize_t pgr_support_show(struct config_item *item, char *page) 1153c17d5d5fSMike Christie { 1154c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 115569088a04SBodo Stroesser u8 flags = da->da_dev->transport_flags; 1156c17d5d5fSMike Christie 1157c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1158c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); 1159c17d5d5fSMike Christie } 1160c17d5d5fSMike Christie 1161356ba2a8SBodo Stroesser static ssize_t pgr_support_store(struct config_item *item, 1162356ba2a8SBodo Stroesser const char *page, size_t count) 1163356ba2a8SBodo Stroesser { 1164356ba2a8SBodo Stroesser struct se_dev_attrib *da = to_attrib(item); 1165356ba2a8SBodo Stroesser struct se_device *dev = da->da_dev; 1166ef7ae7f7SMaurizio Lombardi bool flag, oldflag; 1167356ba2a8SBodo Stroesser int ret; 1168356ba2a8SBodo Stroesser 1169*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 1170ef7ae7f7SMaurizio Lombardi if (ret < 0) 1171ef7ae7f7SMaurizio Lombardi return ret; 1172ef7ae7f7SMaurizio Lombardi 1173ef7ae7f7SMaurizio Lombardi oldflag = !(dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR); 1174ef7ae7f7SMaurizio Lombardi if (flag == oldflag) 1175ef7ae7f7SMaurizio Lombardi return count; 1176ef7ae7f7SMaurizio Lombardi 1177356ba2a8SBodo Stroesser if (!(dev->transport->transport_flags_changeable & 1178356ba2a8SBodo Stroesser TRANSPORT_FLAG_PASSTHROUGH_PGR)) { 1179356ba2a8SBodo Stroesser pr_err("dev[%p]: Unable to change SE Device pgr_support:" 1180356ba2a8SBodo Stroesser " pgr_support has fixed value\n", dev); 1181ef7ae7f7SMaurizio Lombardi return -ENOSYS; 1182356ba2a8SBodo Stroesser } 1183356ba2a8SBodo Stroesser 1184356ba2a8SBodo Stroesser if (flag) 1185356ba2a8SBodo Stroesser dev->transport_flags &= ~TRANSPORT_FLAG_PASSTHROUGH_PGR; 1186356ba2a8SBodo Stroesser else 1187356ba2a8SBodo Stroesser dev->transport_flags |= TRANSPORT_FLAG_PASSTHROUGH_PGR; 1188356ba2a8SBodo Stroesser return count; 1189356ba2a8SBodo Stroesser } 1190356ba2a8SBodo Stroesser 1191bd217b8cSDmitry Bogdanov static ssize_t emulate_rsoc_store(struct config_item *item, 1192bd217b8cSDmitry Bogdanov const char *page, size_t count) 1193bd217b8cSDmitry Bogdanov { 1194bd217b8cSDmitry Bogdanov struct se_dev_attrib *da = to_attrib(item); 1195bd217b8cSDmitry Bogdanov bool flag; 1196bd217b8cSDmitry Bogdanov int ret; 1197bd217b8cSDmitry Bogdanov 1198*e56ca6bcSChristophe JAILLET ret = kstrtobool(page, &flag); 1199bd217b8cSDmitry Bogdanov if (ret < 0) 1200bd217b8cSDmitry Bogdanov return ret; 1201bd217b8cSDmitry Bogdanov 1202bd217b8cSDmitry Bogdanov da->emulate_rsoc = flag; 1203bd217b8cSDmitry Bogdanov pr_debug("dev[%p]: SE Device REPORT_SUPPORTED_OPERATION_CODES_EMULATION flag: %d\n", 1204bd217b8cSDmitry Bogdanov da->da_dev, flag); 1205bd217b8cSDmitry Bogdanov return count; 1206bd217b8cSDmitry Bogdanov } 1207bd217b8cSDmitry Bogdanov 12082eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_model_alias); 12092eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_dpo); 12102eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_write); 12112eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_read); 12122eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_write_cache); 12132eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); 12142eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tas); 12152eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpu); 12162eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpws); 12172eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_caw); 12182eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_3pc); 1219b49d6f78SDavid Disseldorp CONFIGFS_ATTR(, emulate_pr); 1220bd217b8cSDmitry Bogdanov CONFIGFS_ATTR(, emulate_rsoc); 12212eafd729SChristoph Hellwig CONFIGFS_ATTR(, pi_prot_type); 12222eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_pi_prot_type); 1223b6cd7f34SDavid Disseldorp CONFIGFS_ATTR(, pi_prot_format); 1224056e8924SDmitry Monakhov CONFIGFS_ATTR(, pi_prot_verify); 12252eafd729SChristoph Hellwig CONFIGFS_ATTR(, enforce_pr_isids); 12262eafd729SChristoph Hellwig CONFIGFS_ATTR(, is_nonrot); 12272eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_rest_reord); 12282eafd729SChristoph Hellwig CONFIGFS_ATTR(, force_pr_aptpl); 12292eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_block_size); 12302eafd729SChristoph Hellwig CONFIGFS_ATTR(, block_size); 12312eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_max_sectors); 12322eafd729SChristoph Hellwig CONFIGFS_ATTR(, optimal_sectors); 12332eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_queue_depth); 12342eafd729SChristoph Hellwig CONFIGFS_ATTR(, queue_depth); 12352eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_lba_count); 12362eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_block_desc_count); 12372eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity); 12382eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity_alignment); 1239e6f41633SJamie Pocas CONFIGFS_ATTR(, unmap_zeroes_data); 12402eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_write_same_len); 1241356ba2a8SBodo Stroesser CONFIGFS_ATTR(, alua_support); 1242356ba2a8SBodo Stroesser CONFIGFS_ATTR(, pgr_support); 1243c66ac9dbSNicholas Bellinger 12445873c4d1SChristoph Hellwig /* 12455873c4d1SChristoph Hellwig * dev_attrib attributes for devices using the target core SBC/SPC 12465873c4d1SChristoph Hellwig * interpreter. Any backend using spc_parse_cdb should be using 12475873c4d1SChristoph Hellwig * these. 12485873c4d1SChristoph Hellwig */ 12495873c4d1SChristoph Hellwig struct configfs_attribute *sbc_attrib_attrs[] = { 12502eafd729SChristoph Hellwig &attr_emulate_model_alias, 12512eafd729SChristoph Hellwig &attr_emulate_dpo, 12522eafd729SChristoph Hellwig &attr_emulate_fua_write, 12532eafd729SChristoph Hellwig &attr_emulate_fua_read, 12542eafd729SChristoph Hellwig &attr_emulate_write_cache, 12552eafd729SChristoph Hellwig &attr_emulate_ua_intlck_ctrl, 12562eafd729SChristoph Hellwig &attr_emulate_tas, 12572eafd729SChristoph Hellwig &attr_emulate_tpu, 12582eafd729SChristoph Hellwig &attr_emulate_tpws, 12592eafd729SChristoph Hellwig &attr_emulate_caw, 12602eafd729SChristoph Hellwig &attr_emulate_3pc, 1261b49d6f78SDavid Disseldorp &attr_emulate_pr, 12622eafd729SChristoph Hellwig &attr_pi_prot_type, 12632eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12642eafd729SChristoph Hellwig &attr_pi_prot_format, 1265056e8924SDmitry Monakhov &attr_pi_prot_verify, 12662eafd729SChristoph Hellwig &attr_enforce_pr_isids, 12672eafd729SChristoph Hellwig &attr_is_nonrot, 12682eafd729SChristoph Hellwig &attr_emulate_rest_reord, 12692eafd729SChristoph Hellwig &attr_force_pr_aptpl, 12702eafd729SChristoph Hellwig &attr_hw_block_size, 12712eafd729SChristoph Hellwig &attr_block_size, 12722eafd729SChristoph Hellwig &attr_hw_max_sectors, 12732eafd729SChristoph Hellwig &attr_optimal_sectors, 12742eafd729SChristoph Hellwig &attr_hw_queue_depth, 12752eafd729SChristoph Hellwig &attr_queue_depth, 12762eafd729SChristoph Hellwig &attr_max_unmap_lba_count, 12772eafd729SChristoph Hellwig &attr_max_unmap_block_desc_count, 12782eafd729SChristoph Hellwig &attr_unmap_granularity, 12792eafd729SChristoph Hellwig &attr_unmap_granularity_alignment, 1280e6f41633SJamie Pocas &attr_unmap_zeroes_data, 12812eafd729SChristoph Hellwig &attr_max_write_same_len, 1282c17d5d5fSMike Christie &attr_alua_support, 1283c17d5d5fSMike Christie &attr_pgr_support, 1284bd217b8cSDmitry Bogdanov &attr_emulate_rsoc, 12855873c4d1SChristoph Hellwig NULL, 12865873c4d1SChristoph Hellwig }; 12875873c4d1SChristoph Hellwig EXPORT_SYMBOL(sbc_attrib_attrs); 12885873c4d1SChristoph Hellwig 12895873c4d1SChristoph Hellwig /* 12905873c4d1SChristoph Hellwig * Minimal dev_attrib attributes for devices passing through CDBs. 12915873c4d1SChristoph Hellwig * In this case we only provide a few read-only attributes for 12925873c4d1SChristoph Hellwig * backwards compatibility. 12935873c4d1SChristoph Hellwig */ 12945873c4d1SChristoph Hellwig struct configfs_attribute *passthrough_attrib_attrs[] = { 12952eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12962eafd729SChristoph Hellwig &attr_hw_block_size, 12972eafd729SChristoph Hellwig &attr_hw_max_sectors, 12982eafd729SChristoph Hellwig &attr_hw_queue_depth, 129992999417SBodo Stroesser &attr_emulate_pr, 1300c17d5d5fSMike Christie &attr_alua_support, 1301c17d5d5fSMike Christie &attr_pgr_support, 13025873c4d1SChristoph Hellwig NULL, 13035873c4d1SChristoph Hellwig }; 13045873c4d1SChristoph Hellwig EXPORT_SYMBOL(passthrough_attrib_attrs); 13055873c4d1SChristoph Hellwig 13064703b625SBodo Stroesser /* 13074703b625SBodo Stroesser * pr related dev_attrib attributes for devices passing through CDBs, 13084703b625SBodo Stroesser * but allowing in core pr emulation. 13094703b625SBodo Stroesser */ 13104703b625SBodo Stroesser struct configfs_attribute *passthrough_pr_attrib_attrs[] = { 13114703b625SBodo Stroesser &attr_enforce_pr_isids, 13124703b625SBodo Stroesser &attr_force_pr_aptpl, 13134703b625SBodo Stroesser NULL, 13144703b625SBodo Stroesser }; 13154703b625SBodo Stroesser EXPORT_SYMBOL(passthrough_pr_attrib_attrs); 13164703b625SBodo Stroesser 13172eafd729SChristoph Hellwig TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); 13188dc31ff9SMike Christie TB_CIT_SETUP_DRV(dev_action, NULL, NULL); 1319c66ac9dbSNicholas Bellinger 1320f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 1321c66ac9dbSNicholas Bellinger 1322f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 1323c66ac9dbSNicholas Bellinger 13242eafd729SChristoph Hellwig static struct t10_wwn *to_t10_wwn(struct config_item *item) 13252eafd729SChristoph Hellwig { 13262eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); 13272eafd729SChristoph Hellwig } 1328c66ac9dbSNicholas Bellinger 13290322913cSAlan Adamson static ssize_t target_check_inquiry_data(char *buf) 13300322913cSAlan Adamson { 13310322913cSAlan Adamson size_t len; 13320322913cSAlan Adamson int i; 13330322913cSAlan Adamson 13340322913cSAlan Adamson len = strlen(buf); 13350322913cSAlan Adamson 13360322913cSAlan Adamson /* 13370322913cSAlan Adamson * SPC 4.3.1: 13380322913cSAlan Adamson * ASCII data fields shall contain only ASCII printable characters 13390322913cSAlan Adamson * (i.e., code values 20h to 7Eh) and may be terminated with one or 13400322913cSAlan Adamson * more ASCII null (00h) characters. 13410322913cSAlan Adamson */ 13420322913cSAlan Adamson for (i = 0; i < len; i++) { 13430322913cSAlan Adamson if (buf[i] < 0x20 || buf[i] > 0x7E) { 13440322913cSAlan Adamson pr_err("Emulated T10 Inquiry Data contains non-ASCII-printable characters\n"); 13450322913cSAlan Adamson return -EINVAL; 13460322913cSAlan Adamson } 13470322913cSAlan Adamson } 13480322913cSAlan Adamson 13490322913cSAlan Adamson return len; 13500322913cSAlan Adamson } 13510322913cSAlan Adamson 1352c66ac9dbSNicholas Bellinger /* 135354a6f3f6SDavid Disseldorp * STANDARD and VPD page 0x83 T10 Vendor Identification 135454a6f3f6SDavid Disseldorp */ 135554a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_show(struct config_item *item, 135654a6f3f6SDavid Disseldorp char *page) 135754a6f3f6SDavid Disseldorp { 135854a6f3f6SDavid Disseldorp return sprintf(page, "%s\n", &to_t10_wwn(item)->vendor[0]); 135954a6f3f6SDavid Disseldorp } 136054a6f3f6SDavid Disseldorp 136154a6f3f6SDavid Disseldorp static ssize_t target_wwn_vendor_id_store(struct config_item *item, 136254a6f3f6SDavid Disseldorp const char *page, size_t count) 136354a6f3f6SDavid Disseldorp { 136454a6f3f6SDavid Disseldorp struct t10_wwn *t10_wwn = to_t10_wwn(item); 136554a6f3f6SDavid Disseldorp struct se_device *dev = t10_wwn->t10_dev; 136654a6f3f6SDavid Disseldorp /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 136754a6f3f6SDavid Disseldorp unsigned char buf[INQUIRY_VENDOR_LEN + 2]; 136854a6f3f6SDavid Disseldorp char *stripped = NULL; 1369ee26724aSColin Ian King size_t len; 1370ee26724aSColin Ian King ssize_t ret; 137154a6f3f6SDavid Disseldorp 137254a6f3f6SDavid Disseldorp len = strlcpy(buf, page, sizeof(buf)); 137354a6f3f6SDavid Disseldorp if (len < sizeof(buf)) { 137454a6f3f6SDavid Disseldorp /* Strip any newline added from userspace. */ 137554a6f3f6SDavid Disseldorp stripped = strstrip(buf); 137654a6f3f6SDavid Disseldorp len = strlen(stripped); 137754a6f3f6SDavid Disseldorp } 137854a6f3f6SDavid Disseldorp if (len > INQUIRY_VENDOR_LEN) { 137954a6f3f6SDavid Disseldorp pr_err("Emulated T10 Vendor Identification exceeds" 138054a6f3f6SDavid Disseldorp " INQUIRY_VENDOR_LEN: " __stringify(INQUIRY_VENDOR_LEN) 138154a6f3f6SDavid Disseldorp "\n"); 138254a6f3f6SDavid Disseldorp return -EOVERFLOW; 138354a6f3f6SDavid Disseldorp } 138454a6f3f6SDavid Disseldorp 13850322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 13860322913cSAlan Adamson 13870322913cSAlan Adamson if (ret < 0) 13880322913cSAlan Adamson return ret; 138954a6f3f6SDavid Disseldorp 139054a6f3f6SDavid Disseldorp /* 139154a6f3f6SDavid Disseldorp * Check to see if any active exports exist. If they do exist, fail 139254a6f3f6SDavid Disseldorp * here as changing this information on the fly (underneath the 139354a6f3f6SDavid Disseldorp * initiator side OS dependent multipath code) could cause negative 139454a6f3f6SDavid Disseldorp * effects. 139554a6f3f6SDavid Disseldorp */ 139654a6f3f6SDavid Disseldorp if (dev->export_count) { 139754a6f3f6SDavid Disseldorp pr_err("Unable to set T10 Vendor Identification while" 139854a6f3f6SDavid Disseldorp " active %d exports exist\n", dev->export_count); 139954a6f3f6SDavid Disseldorp return -EINVAL; 140054a6f3f6SDavid Disseldorp } 140154a6f3f6SDavid Disseldorp 140254a6f3f6SDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.vendor) != INQUIRY_VENDOR_LEN + 1); 140354a6f3f6SDavid Disseldorp strlcpy(dev->t10_wwn.vendor, stripped, sizeof(dev->t10_wwn.vendor)); 140454a6f3f6SDavid Disseldorp 140554a6f3f6SDavid Disseldorp pr_debug("Target_Core_ConfigFS: Set emulated T10 Vendor Identification:" 140654a6f3f6SDavid Disseldorp " %s\n", dev->t10_wwn.vendor); 140754a6f3f6SDavid Disseldorp 140854a6f3f6SDavid Disseldorp return count; 140954a6f3f6SDavid Disseldorp } 141054a6f3f6SDavid Disseldorp 14110322913cSAlan Adamson static ssize_t target_wwn_product_id_show(struct config_item *item, 14120322913cSAlan Adamson char *page) 14130322913cSAlan Adamson { 14140322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->model[0]); 14150322913cSAlan Adamson } 14160322913cSAlan Adamson 14170322913cSAlan Adamson static ssize_t target_wwn_product_id_store(struct config_item *item, 14180322913cSAlan Adamson const char *page, size_t count) 14190322913cSAlan Adamson { 14200322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 14210322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 14220322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 14230322913cSAlan Adamson unsigned char buf[INQUIRY_MODEL_LEN + 2]; 14240322913cSAlan Adamson char *stripped = NULL; 1425ee26724aSColin Ian King size_t len; 1426ee26724aSColin Ian King ssize_t ret; 14270322913cSAlan Adamson 14280322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 14290322913cSAlan Adamson if (len < sizeof(buf)) { 14300322913cSAlan Adamson /* Strip any newline added from userspace. */ 14310322913cSAlan Adamson stripped = strstrip(buf); 14320322913cSAlan Adamson len = strlen(stripped); 14330322913cSAlan Adamson } 14340322913cSAlan Adamson if (len > INQUIRY_MODEL_LEN) { 14350322913cSAlan Adamson pr_err("Emulated T10 Vendor exceeds INQUIRY_MODEL_LEN: " 14360322913cSAlan Adamson __stringify(INQUIRY_MODEL_LEN) 14370322913cSAlan Adamson "\n"); 14380322913cSAlan Adamson return -EOVERFLOW; 14390322913cSAlan Adamson } 14400322913cSAlan Adamson 14410322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 14420322913cSAlan Adamson 14430322913cSAlan Adamson if (ret < 0) 14440322913cSAlan Adamson return ret; 14450322913cSAlan Adamson 14460322913cSAlan Adamson /* 14470322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 14480322913cSAlan Adamson * here as changing this information on the fly (underneath the 14490322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 14500322913cSAlan Adamson * effects. 14510322913cSAlan Adamson */ 14520322913cSAlan Adamson if (dev->export_count) { 14530322913cSAlan Adamson pr_err("Unable to set T10 Model while active %d exports exist\n", 14540322913cSAlan Adamson dev->export_count); 14550322913cSAlan Adamson return -EINVAL; 14560322913cSAlan Adamson } 14570322913cSAlan Adamson 14580322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 14590322913cSAlan Adamson strlcpy(dev->t10_wwn.model, stripped, sizeof(dev->t10_wwn.model)); 14600322913cSAlan Adamson 14610322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Model Identification: %s\n", 14620322913cSAlan Adamson dev->t10_wwn.model); 14630322913cSAlan Adamson 14640322913cSAlan Adamson return count; 14650322913cSAlan Adamson } 14660322913cSAlan Adamson 14670322913cSAlan Adamson static ssize_t target_wwn_revision_show(struct config_item *item, 14680322913cSAlan Adamson char *page) 14690322913cSAlan Adamson { 14700322913cSAlan Adamson return sprintf(page, "%s\n", &to_t10_wwn(item)->revision[0]); 14710322913cSAlan Adamson } 14720322913cSAlan Adamson 14730322913cSAlan Adamson static ssize_t target_wwn_revision_store(struct config_item *item, 14740322913cSAlan Adamson const char *page, size_t count) 14750322913cSAlan Adamson { 14760322913cSAlan Adamson struct t10_wwn *t10_wwn = to_t10_wwn(item); 14770322913cSAlan Adamson struct se_device *dev = t10_wwn->t10_dev; 14780322913cSAlan Adamson /* +2 to allow for a trailing (stripped) '\n' and null-terminator */ 14790322913cSAlan Adamson unsigned char buf[INQUIRY_REVISION_LEN + 2]; 14800322913cSAlan Adamson char *stripped = NULL; 1481ee26724aSColin Ian King size_t len; 1482ee26724aSColin Ian King ssize_t ret; 14830322913cSAlan Adamson 14840322913cSAlan Adamson len = strlcpy(buf, page, sizeof(buf)); 14850322913cSAlan Adamson if (len < sizeof(buf)) { 14860322913cSAlan Adamson /* Strip any newline added from userspace. */ 14870322913cSAlan Adamson stripped = strstrip(buf); 14880322913cSAlan Adamson len = strlen(stripped); 14890322913cSAlan Adamson } 14900322913cSAlan Adamson if (len > INQUIRY_REVISION_LEN) { 14910322913cSAlan Adamson pr_err("Emulated T10 Revision exceeds INQUIRY_REVISION_LEN: " 14920322913cSAlan Adamson __stringify(INQUIRY_REVISION_LEN) 14930322913cSAlan Adamson "\n"); 14940322913cSAlan Adamson return -EOVERFLOW; 14950322913cSAlan Adamson } 14960322913cSAlan Adamson 14970322913cSAlan Adamson ret = target_check_inquiry_data(stripped); 14980322913cSAlan Adamson 14990322913cSAlan Adamson if (ret < 0) 15000322913cSAlan Adamson return ret; 15010322913cSAlan Adamson 15020322913cSAlan Adamson /* 15030322913cSAlan Adamson * Check to see if any active exports exist. If they do exist, fail 15040322913cSAlan Adamson * here as changing this information on the fly (underneath the 15050322913cSAlan Adamson * initiator side OS dependent multipath code) could cause negative 15060322913cSAlan Adamson * effects. 15070322913cSAlan Adamson */ 15080322913cSAlan Adamson if (dev->export_count) { 15090322913cSAlan Adamson pr_err("Unable to set T10 Revision while active %d exports exist\n", 15100322913cSAlan Adamson dev->export_count); 15110322913cSAlan Adamson return -EINVAL; 15120322913cSAlan Adamson } 15130322913cSAlan Adamson 15140322913cSAlan Adamson BUILD_BUG_ON(sizeof(dev->t10_wwn.revision) != INQUIRY_REVISION_LEN + 1); 15150322913cSAlan Adamson strlcpy(dev->t10_wwn.revision, stripped, sizeof(dev->t10_wwn.revision)); 15160322913cSAlan Adamson 15170322913cSAlan Adamson pr_debug("Target_Core_ConfigFS: Set emulated T10 Revision: %s\n", 15180322913cSAlan Adamson dev->t10_wwn.revision); 15190322913cSAlan Adamson 15200322913cSAlan Adamson return count; 15210322913cSAlan Adamson } 15220322913cSAlan Adamson 15232469f1e0SSergey Samoylenko static ssize_t 15242469f1e0SSergey Samoylenko target_wwn_company_id_show(struct config_item *item, 15252469f1e0SSergey Samoylenko char *page) 15262469f1e0SSergey Samoylenko { 15272469f1e0SSergey Samoylenko return snprintf(page, PAGE_SIZE, "%#08x\n", 15282469f1e0SSergey Samoylenko to_t10_wwn(item)->company_id); 15292469f1e0SSergey Samoylenko } 15302469f1e0SSergey Samoylenko 15312469f1e0SSergey Samoylenko static ssize_t 15322469f1e0SSergey Samoylenko target_wwn_company_id_store(struct config_item *item, 15332469f1e0SSergey Samoylenko const char *page, size_t count) 15342469f1e0SSergey Samoylenko { 15352469f1e0SSergey Samoylenko struct t10_wwn *t10_wwn = to_t10_wwn(item); 15362469f1e0SSergey Samoylenko struct se_device *dev = t10_wwn->t10_dev; 15372469f1e0SSergey Samoylenko u32 val; 15382469f1e0SSergey Samoylenko int ret; 15392469f1e0SSergey Samoylenko 15402469f1e0SSergey Samoylenko /* 15412469f1e0SSergey Samoylenko * The IEEE COMPANY_ID field should contain a 24-bit canonical 15422469f1e0SSergey Samoylenko * form OUI assigned by the IEEE. 15432469f1e0SSergey Samoylenko */ 15442469f1e0SSergey Samoylenko ret = kstrtou32(page, 0, &val); 15452469f1e0SSergey Samoylenko if (ret < 0) 15462469f1e0SSergey Samoylenko return ret; 15472469f1e0SSergey Samoylenko 15482469f1e0SSergey Samoylenko if (val >= 0x1000000) 15492469f1e0SSergey Samoylenko return -EOVERFLOW; 15502469f1e0SSergey Samoylenko 15512469f1e0SSergey Samoylenko /* 15522469f1e0SSergey Samoylenko * Check to see if any active exports exist. If they do exist, fail 15532469f1e0SSergey Samoylenko * here as changing this information on the fly (underneath the 15542469f1e0SSergey Samoylenko * initiator side OS dependent multipath code) could cause negative 15552469f1e0SSergey Samoylenko * effects. 15562469f1e0SSergey Samoylenko */ 15572469f1e0SSergey Samoylenko if (dev->export_count) { 15582469f1e0SSergey Samoylenko pr_err("Unable to set Company ID while %u exports exist\n", 15592469f1e0SSergey Samoylenko dev->export_count); 15602469f1e0SSergey Samoylenko return -EINVAL; 15612469f1e0SSergey Samoylenko } 15622469f1e0SSergey Samoylenko 15632469f1e0SSergey Samoylenko t10_wwn->company_id = val; 15642469f1e0SSergey Samoylenko 15652469f1e0SSergey Samoylenko pr_debug("Target_Core_ConfigFS: Set IEEE Company ID: %#08x\n", 15662469f1e0SSergey Samoylenko t10_wwn->company_id); 15672469f1e0SSergey Samoylenko 15682469f1e0SSergey Samoylenko return count; 15692469f1e0SSergey Samoylenko } 15702469f1e0SSergey Samoylenko 157154a6f3f6SDavid Disseldorp /* 1572c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 1573c66ac9dbSNicholas Bellinger */ 15742eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, 1575c66ac9dbSNicholas Bellinger char *page) 1576c66ac9dbSNicholas Bellinger { 1577c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 15782eafd729SChristoph Hellwig &to_t10_wwn(item)->unit_serial[0]); 1579c66ac9dbSNicholas Bellinger } 1580c66ac9dbSNicholas Bellinger 15812eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, 15822eafd729SChristoph Hellwig const char *page, size_t count) 1583c66ac9dbSNicholas Bellinger { 15842eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 15850fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 15862d4e2dafSChaitanya Kulkarni unsigned char buf[INQUIRY_VPD_SERIAL_LEN] = { }; 1587c66ac9dbSNicholas Bellinger 1588c66ac9dbSNicholas Bellinger /* 1589c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 1590c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 1591c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 1592c66ac9dbSNicholas Bellinger * 1593c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 1594c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 1595c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 1596c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 1597c66ac9dbSNicholas Bellinger */ 15980fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 15996708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 1600c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 1601c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 1602c66ac9dbSNicholas Bellinger } 1603c66ac9dbSNicholas Bellinger 160460d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 16056708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 1606c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 1607c66ac9dbSNicholas Bellinger return -EOVERFLOW; 1608c66ac9dbSNicholas Bellinger } 1609c66ac9dbSNicholas Bellinger /* 1610c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 1611c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 1612c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 1613c66ac9dbSNicholas Bellinger * could cause negative effects. 1614c66ac9dbSNicholas Bellinger */ 16150fd97ccfSChristoph Hellwig if (dev->export_count) { 16166708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 1617c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 16180fd97ccfSChristoph Hellwig dev->export_count); 1619c66ac9dbSNicholas Bellinger return -EINVAL; 1620c66ac9dbSNicholas Bellinger } 16210fd97ccfSChristoph Hellwig 1622c66ac9dbSNicholas Bellinger /* 1623c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 1624c66ac9dbSNicholas Bellinger * 1625c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 1626c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 1627c66ac9dbSNicholas Bellinger */ 1628c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 16290fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 1630c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 16310fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 1632c66ac9dbSNicholas Bellinger 16336708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 16340fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 1635c66ac9dbSNicholas Bellinger 1636c66ac9dbSNicholas Bellinger return count; 1637c66ac9dbSNicholas Bellinger } 1638c66ac9dbSNicholas Bellinger 1639c66ac9dbSNicholas Bellinger /* 1640c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 1641c66ac9dbSNicholas Bellinger */ 16422eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, 1643c66ac9dbSNicholas Bellinger char *page) 1644c66ac9dbSNicholas Bellinger { 16452eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 1646c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 16472d4e2dafSChaitanya Kulkarni unsigned char buf[VPD_TMP_BUF_SIZE] = { }; 1648c66ac9dbSNicholas Bellinger ssize_t len = 0; 1649c66ac9dbSNicholas Bellinger 1650c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 1651c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 16526708bb27SAndy Grover if (!vpd->protocol_identifier_set) 1653c66ac9dbSNicholas Bellinger continue; 1654c66ac9dbSNicholas Bellinger 1655c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 1656c66ac9dbSNicholas Bellinger 16576708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1658c66ac9dbSNicholas Bellinger break; 1659c66ac9dbSNicholas Bellinger 1660c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1661c66ac9dbSNicholas Bellinger } 1662c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 1663c66ac9dbSNicholas Bellinger 1664c66ac9dbSNicholas Bellinger return len; 1665c66ac9dbSNicholas Bellinger } 1666c66ac9dbSNicholas Bellinger 1667c66ac9dbSNicholas Bellinger /* 1668c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 1669c66ac9dbSNicholas Bellinger */ 1670c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 16712eafd729SChristoph Hellwig static ssize_t target_wwn_##_name##_show(struct config_item *item, \ 1672c66ac9dbSNicholas Bellinger char *page) \ 1673c66ac9dbSNicholas Bellinger { \ 16742eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); \ 1675c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 1676c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 1677c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 1678c66ac9dbSNicholas Bellinger \ 1679c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 1680c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 1681c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 1682c66ac9dbSNicholas Bellinger continue; \ 1683c66ac9dbSNicholas Bellinger \ 1684c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1685c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 16866708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1687c66ac9dbSNicholas Bellinger break; \ 1688c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1689c66ac9dbSNicholas Bellinger \ 1690c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1691c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 16926708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1693c66ac9dbSNicholas Bellinger break; \ 1694c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1695c66ac9dbSNicholas Bellinger \ 1696c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1697c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 16986708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1699c66ac9dbSNicholas Bellinger break; \ 1700c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1701c66ac9dbSNicholas Bellinger } \ 1702c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 1703c66ac9dbSNicholas Bellinger \ 1704c66ac9dbSNicholas Bellinger return len; \ 1705c66ac9dbSNicholas Bellinger } 1706c66ac9dbSNicholas Bellinger 17072eafd729SChristoph Hellwig /* VPD page 0x83 Association: Logical Unit */ 1708c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 17092eafd729SChristoph Hellwig /* VPD page 0x83 Association: Target Port */ 1710c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 17112eafd729SChristoph Hellwig /* VPD page 0x83 Association: SCSI Target Device */ 1712c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 1713c66ac9dbSNicholas Bellinger 171454a6f3f6SDavid Disseldorp CONFIGFS_ATTR(target_wwn_, vendor_id); 17150322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, product_id); 17160322913cSAlan Adamson CONFIGFS_ATTR(target_wwn_, revision); 17172469f1e0SSergey Samoylenko CONFIGFS_ATTR(target_wwn_, company_id); 17182eafd729SChristoph Hellwig CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); 17192eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); 17202eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); 17212eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); 17222eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); 1723c66ac9dbSNicholas Bellinger 1724c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 172554a6f3f6SDavid Disseldorp &target_wwn_attr_vendor_id, 17260322913cSAlan Adamson &target_wwn_attr_product_id, 17270322913cSAlan Adamson &target_wwn_attr_revision, 17282469f1e0SSergey Samoylenko &target_wwn_attr_company_id, 17292eafd729SChristoph Hellwig &target_wwn_attr_vpd_unit_serial, 17302eafd729SChristoph Hellwig &target_wwn_attr_vpd_protocol_identifier, 17312eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_logical_unit, 17322eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_target_port, 17332eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_scsi_target_device, 1734c66ac9dbSNicholas Bellinger NULL, 1735c66ac9dbSNicholas Bellinger }; 1736c66ac9dbSNicholas Bellinger 17372eafd729SChristoph Hellwig TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); 1738c66ac9dbSNicholas Bellinger 1739f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 1740c66ac9dbSNicholas Bellinger 174191e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 1742c66ac9dbSNicholas Bellinger 17432eafd729SChristoph Hellwig static struct se_device *pr_to_dev(struct config_item *item) 17442eafd729SChristoph Hellwig { 17452eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, 17462eafd729SChristoph Hellwig dev_pr_group); 17472eafd729SChristoph Hellwig } 1748c66ac9dbSNicholas Bellinger 1749d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1750d977f437SChristoph Hellwig char *page) 1751c66ac9dbSNicholas Bellinger { 1752c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1753c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 17542d4e2dafSChaitanya Kulkarni char i_buf[PR_REG_ISID_ID_LEN] = { }; 1755c66ac9dbSNicholas Bellinger 1756c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1757d977f437SChristoph Hellwig if (!pr_reg) 1758d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1759d977f437SChristoph Hellwig 1760c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1761d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1762c66ac9dbSNicholas Bellinger 1763d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 176430c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1765d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1766c66ac9dbSNicholas Bellinger } 1767c66ac9dbSNicholas Bellinger 1768d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1769d977f437SChristoph Hellwig char *page) 1770c66ac9dbSNicholas Bellinger { 1771fae43461SBart Van Assche struct se_session *sess = dev->reservation_holder; 1772c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1773d977f437SChristoph Hellwig ssize_t len; 1774c66ac9dbSNicholas Bellinger 1775fae43461SBart Van Assche if (sess) { 1776fae43461SBart Van Assche se_nacl = sess->se_node_acl; 1777d977f437SChristoph Hellwig len = sprintf(page, 1778d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 177930c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1780c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1781d977f437SChristoph Hellwig } else { 1782d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1783d977f437SChristoph Hellwig } 1784d977f437SChristoph Hellwig return len; 1785c66ac9dbSNicholas Bellinger } 1786c66ac9dbSNicholas Bellinger 17872eafd729SChristoph Hellwig static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) 1788c66ac9dbSNicholas Bellinger { 17892eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1790d977f437SChristoph Hellwig int ret; 1791c66ac9dbSNicholas Bellinger 1792b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1793b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 1794b49d6f78SDavid Disseldorp 179569088a04SBodo Stroesser if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1796d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1797c66ac9dbSNicholas Bellinger 1798d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1799d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1800d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1801d977f437SChristoph Hellwig else 1802d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1803d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1804d977f437SChristoph Hellwig return ret; 1805c66ac9dbSNicholas Bellinger } 1806c66ac9dbSNicholas Bellinger 18072eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, 18082eafd729SChristoph Hellwig char *page) 1809c66ac9dbSNicholas Bellinger { 18102eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1811c66ac9dbSNicholas Bellinger ssize_t len = 0; 1812c66ac9dbSNicholas Bellinger 1813c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1814d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1815c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1816d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1817c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1818c66ac9dbSNicholas Bellinger " Ports registration\n"); 1819d977f437SChristoph Hellwig } else { 1820c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1821c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1822d977f437SChristoph Hellwig } 1823c66ac9dbSNicholas Bellinger 1824d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1825c66ac9dbSNicholas Bellinger return len; 1826c66ac9dbSNicholas Bellinger } 1827c66ac9dbSNicholas Bellinger 18282eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_generation_show(struct config_item *item, 18292eafd729SChristoph Hellwig char *page) 1830c66ac9dbSNicholas Bellinger { 18312eafd729SChristoph Hellwig return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); 1832c66ac9dbSNicholas Bellinger } 1833c66ac9dbSNicholas Bellinger 1834c66ac9dbSNicholas Bellinger 18352eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, 18362eafd729SChristoph Hellwig char *page) 1837c66ac9dbSNicholas Bellinger { 18382eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1839c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1840c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1841c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 18429ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1843c66ac9dbSNicholas Bellinger ssize_t len = 0; 1844c66ac9dbSNicholas Bellinger 1845c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1846c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 18476708bb27SAndy Grover if (!pr_reg) { 1848c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1849d977f437SChristoph Hellwig goto out_unlock; 1850c66ac9dbSNicholas Bellinger } 1851d977f437SChristoph Hellwig 1852c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1853c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1854e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1855c66ac9dbSNicholas Bellinger 1856c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 185730c7ca93SDavid Disseldorp " Target Node Endpoint: %s\n", tfo->fabric_name, 1858c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1859c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 186035d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1861f2d30680SHannes Reinecke " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, 186230c7ca93SDavid Disseldorp tfo->fabric_name, tfo->tpg_get_tag(se_tpg), 186330c7ca93SDavid Disseldorp tfo->fabric_name, pr_reg->pr_aptpl_target_lun); 1864c66ac9dbSNicholas Bellinger 1865d977f437SChristoph Hellwig out_unlock: 1866d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1867c66ac9dbSNicholas Bellinger return len; 1868c66ac9dbSNicholas Bellinger } 1869c66ac9dbSNicholas Bellinger 1870c66ac9dbSNicholas Bellinger 18712eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, 18722eafd729SChristoph Hellwig char *page) 1873c66ac9dbSNicholas Bellinger { 18742eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 18759ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1876c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1877c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1878c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1879c66ac9dbSNicholas Bellinger ssize_t len = 0; 1880d2843c17SAndy Grover int reg_count = 0; 1881c66ac9dbSNicholas Bellinger 1882c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1883c66ac9dbSNicholas Bellinger 18840fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 18850fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1886c66ac9dbSNicholas Bellinger pr_reg_list) { 1887c66ac9dbSNicholas Bellinger 1888c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1889c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1890c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1891d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1892c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1893c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 189430c7ca93SDavid Disseldorp tfo->fabric_name, 1895d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1896c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1897c66ac9dbSNicholas Bellinger 18986708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1899c66ac9dbSNicholas Bellinger break; 1900c66ac9dbSNicholas Bellinger 1901c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1902c66ac9dbSNicholas Bellinger reg_count++; 1903c66ac9dbSNicholas Bellinger } 19040fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1905c66ac9dbSNicholas Bellinger 19066708bb27SAndy Grover if (!reg_count) 1907c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1908c66ac9dbSNicholas Bellinger 1909c66ac9dbSNicholas Bellinger return len; 1910c66ac9dbSNicholas Bellinger } 1911c66ac9dbSNicholas Bellinger 19122eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) 1913c66ac9dbSNicholas Bellinger { 19142eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1915c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1916c66ac9dbSNicholas Bellinger ssize_t len = 0; 1917c66ac9dbSNicholas Bellinger 1918c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1919c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1920d977f437SChristoph Hellwig if (pr_reg) { 1921c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1922c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1923d977f437SChristoph Hellwig } else { 1924d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1925d977f437SChristoph Hellwig } 1926c66ac9dbSNicholas Bellinger 1927d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1928c66ac9dbSNicholas Bellinger return len; 1929c66ac9dbSNicholas Bellinger } 1930c66ac9dbSNicholas Bellinger 19312eafd729SChristoph Hellwig static ssize_t target_pr_res_type_show(struct config_item *item, char *page) 1932c66ac9dbSNicholas Bellinger { 19332eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19342eafd729SChristoph Hellwig 1935b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1936b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 193769088a04SBodo Stroesser if (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1938d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1939b49d6f78SDavid Disseldorp if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1940d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1941b49d6f78SDavid Disseldorp 1942d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1943c66ac9dbSNicholas Bellinger } 1944c66ac9dbSNicholas Bellinger 19452eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, 19462eafd729SChristoph Hellwig char *page) 1947c66ac9dbSNicholas Bellinger { 19482eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19492eafd729SChristoph Hellwig 1950b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 195169088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1952c66ac9dbSNicholas Bellinger return 0; 1953c66ac9dbSNicholas Bellinger 1954c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 19550fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1956c66ac9dbSNicholas Bellinger } 1957c66ac9dbSNicholas Bellinger 19582eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, 19592eafd729SChristoph Hellwig char *page) 1960c66ac9dbSNicholas Bellinger { 19612eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19622eafd729SChristoph Hellwig 1963b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 196469088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1965c66ac9dbSNicholas Bellinger return 0; 1966c66ac9dbSNicholas Bellinger 1967c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1968c66ac9dbSNicholas Bellinger } 1969c66ac9dbSNicholas Bellinger 1970c66ac9dbSNicholas Bellinger enum { 1971c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1972c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1973c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1974c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1975c66ac9dbSNicholas Bellinger }; 1976c66ac9dbSNicholas Bellinger 1977c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1978c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1979c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1980c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1981c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1982c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1983c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1984c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1985c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1986a2db857bStangwenji {Opt_mapped_lun, "mapped_lun=%u"}, 1987c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1988c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1989c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1990c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1991a2db857bStangwenji {Opt_target_lun, "target_lun=%u"}, 1992c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1993c66ac9dbSNicholas Bellinger }; 1994c66ac9dbSNicholas Bellinger 19952eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, 19962eafd729SChristoph Hellwig const char *page, size_t count) 1997c66ac9dbSNicholas Bellinger { 19982eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 19996d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 20006d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 20018d213559SJoern Engel char *orig, *ptr, *opts; 2002c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 2003c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 2004c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 2005f2d30680SHannes Reinecke u64 mapped_lun = 0, target_lun = 0; 2006c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 200745fb94c2SBart Van Assche u16 tpgt = 0; 200845fb94c2SBart Van Assche u8 type = 0; 2009c66ac9dbSNicholas Bellinger 2010b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 201169088a04SBodo Stroesser (dev->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 20129105bfc0SAndy Grover return count; 2013d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 20149105bfc0SAndy Grover return count; 2015c66ac9dbSNicholas Bellinger 20160fd97ccfSChristoph Hellwig if (dev->export_count) { 20176708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 2018c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 2019c66ac9dbSNicholas Bellinger return -EINVAL; 2020c66ac9dbSNicholas Bellinger } 2021c66ac9dbSNicholas Bellinger 2022c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 2023c66ac9dbSNicholas Bellinger if (!opts) 2024c66ac9dbSNicholas Bellinger return -ENOMEM; 2025c66ac9dbSNicholas Bellinger 2026c66ac9dbSNicholas Bellinger orig = opts; 202790c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 2028c66ac9dbSNicholas Bellinger if (!*ptr) 2029c66ac9dbSNicholas Bellinger continue; 2030c66ac9dbSNicholas Bellinger 2031c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 2032c66ac9dbSNicholas Bellinger switch (token) { 2033c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 20348d213559SJoern Engel i_fabric = match_strdup(args); 20356d180253SJesper Juhl if (!i_fabric) { 20366d180253SJesper Juhl ret = -ENOMEM; 20376d180253SJesper Juhl goto out; 20386d180253SJesper Juhl } 2039c66ac9dbSNicholas Bellinger break; 2040c66ac9dbSNicholas Bellinger case Opt_initiator_node: 20418d213559SJoern Engel i_port = match_strdup(args); 20426d180253SJesper Juhl if (!i_port) { 20436d180253SJesper Juhl ret = -ENOMEM; 20446d180253SJesper Juhl goto out; 20456d180253SJesper Juhl } 204660d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 20476708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 2048c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 2049c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 2050c66ac9dbSNicholas Bellinger ret = -EINVAL; 2051c66ac9dbSNicholas Bellinger break; 2052c66ac9dbSNicholas Bellinger } 2053c66ac9dbSNicholas Bellinger break; 2054c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 20558d213559SJoern Engel isid = match_strdup(args); 20566d180253SJesper Juhl if (!isid) { 20576d180253SJesper Juhl ret = -ENOMEM; 20586d180253SJesper Juhl goto out; 20596d180253SJesper Juhl } 206060d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 20616708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 2062c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 2063c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 2064c66ac9dbSNicholas Bellinger ret = -EINVAL; 2065c66ac9dbSNicholas Bellinger break; 2066c66ac9dbSNicholas Bellinger } 2067c66ac9dbSNicholas Bellinger break; 2068c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 2069a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2070c66ac9dbSNicholas Bellinger if (ret < 0) { 20718d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 2072c66ac9dbSNicholas Bellinger goto out; 2073c66ac9dbSNicholas Bellinger } 2074c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 2075c66ac9dbSNicholas Bellinger break; 2076c66ac9dbSNicholas Bellinger /* 2077c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 2078c66ac9dbSNicholas Bellinger */ 2079c66ac9dbSNicholas Bellinger case Opt_res_holder: 2080c2091026SDavid Disseldorp ret = match_int(args, &arg); 2081c2091026SDavid Disseldorp if (ret) 2082c2091026SDavid Disseldorp goto out; 2083c66ac9dbSNicholas Bellinger res_holder = arg; 2084c66ac9dbSNicholas Bellinger break; 2085c66ac9dbSNicholas Bellinger case Opt_res_type: 2086c2091026SDavid Disseldorp ret = match_int(args, &arg); 2087c2091026SDavid Disseldorp if (ret) 2088c2091026SDavid Disseldorp goto out; 2089c66ac9dbSNicholas Bellinger type = (u8)arg; 2090c66ac9dbSNicholas Bellinger break; 2091c66ac9dbSNicholas Bellinger case Opt_res_scope: 2092c2091026SDavid Disseldorp ret = match_int(args, &arg); 2093c2091026SDavid Disseldorp if (ret) 2094c2091026SDavid Disseldorp goto out; 2095c66ac9dbSNicholas Bellinger break; 2096c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 2097c2091026SDavid Disseldorp ret = match_int(args, &arg); 2098c2091026SDavid Disseldorp if (ret) 2099c2091026SDavid Disseldorp goto out; 2100c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 2101c66ac9dbSNicholas Bellinger break; 2102c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 2103a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2104c2091026SDavid Disseldorp if (ret) 2105c2091026SDavid Disseldorp goto out; 2106a2db857bStangwenji mapped_lun = (u64)tmp_ll; 2107c66ac9dbSNicholas Bellinger break; 2108c66ac9dbSNicholas Bellinger /* 2109c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 2110c66ac9dbSNicholas Bellinger */ 2111c66ac9dbSNicholas Bellinger case Opt_target_fabric: 21128d213559SJoern Engel t_fabric = match_strdup(args); 21136d180253SJesper Juhl if (!t_fabric) { 21146d180253SJesper Juhl ret = -ENOMEM; 21156d180253SJesper Juhl goto out; 21166d180253SJesper Juhl } 2117c66ac9dbSNicholas Bellinger break; 2118c66ac9dbSNicholas Bellinger case Opt_target_node: 21198d213559SJoern Engel t_port = match_strdup(args); 21206d180253SJesper Juhl if (!t_port) { 21216d180253SJesper Juhl ret = -ENOMEM; 21226d180253SJesper Juhl goto out; 21236d180253SJesper Juhl } 212460d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 21256708bb27SAndy Grover pr_err("APTPL metadata target_node=" 2126c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 2127c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 2128c66ac9dbSNicholas Bellinger ret = -EINVAL; 2129c66ac9dbSNicholas Bellinger break; 2130c66ac9dbSNicholas Bellinger } 2131c66ac9dbSNicholas Bellinger break; 2132c66ac9dbSNicholas Bellinger case Opt_tpgt: 2133c2091026SDavid Disseldorp ret = match_int(args, &arg); 2134c2091026SDavid Disseldorp if (ret) 2135c2091026SDavid Disseldorp goto out; 2136c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 2137c66ac9dbSNicholas Bellinger break; 2138c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 2139c2091026SDavid Disseldorp ret = match_int(args, &arg); 2140c2091026SDavid Disseldorp if (ret) 2141c2091026SDavid Disseldorp goto out; 2142c66ac9dbSNicholas Bellinger break; 2143c66ac9dbSNicholas Bellinger case Opt_target_lun: 2144a2db857bStangwenji ret = match_u64(args, &tmp_ll); 2145c2091026SDavid Disseldorp if (ret) 2146c2091026SDavid Disseldorp goto out; 2147a2db857bStangwenji target_lun = (u64)tmp_ll; 2148c66ac9dbSNicholas Bellinger break; 2149c66ac9dbSNicholas Bellinger default: 2150c66ac9dbSNicholas Bellinger break; 2151c66ac9dbSNicholas Bellinger } 2152c66ac9dbSNicholas Bellinger } 2153c66ac9dbSNicholas Bellinger 21546708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 21556708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 2156c66ac9dbSNicholas Bellinger ret = -EINVAL; 2157c66ac9dbSNicholas Bellinger goto out; 2158c66ac9dbSNicholas Bellinger } 2159c66ac9dbSNicholas Bellinger 2160c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 21616708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 2162c66ac9dbSNicholas Bellinger " holder\n", type); 2163c66ac9dbSNicholas Bellinger ret = -EINVAL; 2164c66ac9dbSNicholas Bellinger goto out; 2165c66ac9dbSNicholas Bellinger } 2166c66ac9dbSNicholas Bellinger 21670fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 2168c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 2169c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 2170c66ac9dbSNicholas Bellinger out: 21716d180253SJesper Juhl kfree(i_fabric); 21726d180253SJesper Juhl kfree(i_port); 21736d180253SJesper Juhl kfree(isid); 21746d180253SJesper Juhl kfree(t_fabric); 21756d180253SJesper Juhl kfree(t_port); 2176c66ac9dbSNicholas Bellinger kfree(orig); 2177c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 2178c66ac9dbSNicholas Bellinger } 2179c66ac9dbSNicholas Bellinger 2180c66ac9dbSNicholas Bellinger 21812eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_holder); 21822eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); 21832eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); 21842eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); 21852eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); 21862eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_type); 21872eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_type); 21882eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); 21892eafd729SChristoph Hellwig CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); 2190c66ac9dbSNicholas Bellinger 2191c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 21922eafd729SChristoph Hellwig &target_pr_attr_res_holder, 21932eafd729SChristoph Hellwig &target_pr_attr_res_pr_all_tgt_pts, 21942eafd729SChristoph Hellwig &target_pr_attr_res_pr_generation, 21952eafd729SChristoph Hellwig &target_pr_attr_res_pr_holder_tg_port, 21962eafd729SChristoph Hellwig &target_pr_attr_res_pr_registered_i_pts, 21972eafd729SChristoph Hellwig &target_pr_attr_res_pr_type, 21982eafd729SChristoph Hellwig &target_pr_attr_res_type, 21992eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_active, 22002eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_metadata, 2201c66ac9dbSNicholas Bellinger NULL, 2202c66ac9dbSNicholas Bellinger }; 2203c66ac9dbSNicholas Bellinger 22042eafd729SChristoph Hellwig TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); 2205c66ac9dbSNicholas Bellinger 220691e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 2207c66ac9dbSNicholas Bellinger 220873112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 2209c66ac9dbSNicholas Bellinger 22102eafd729SChristoph Hellwig static inline struct se_device *to_device(struct config_item *item) 2211c66ac9dbSNicholas Bellinger { 22122eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, dev_group); 22132eafd729SChristoph Hellwig } 22142eafd729SChristoph Hellwig 22152eafd729SChristoph Hellwig static ssize_t target_dev_info_show(struct config_item *item, char *page) 22162eafd729SChristoph Hellwig { 22172eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2218c66ac9dbSNicholas Bellinger int bl = 0; 2219c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 2220c66ac9dbSNicholas Bellinger 22210fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 2222c66ac9dbSNicholas Bellinger read_bytes += bl; 22230a06d430SChristoph Hellwig read_bytes += dev->transport->show_configfs_dev_params(dev, 22240a06d430SChristoph Hellwig page+read_bytes); 2225c66ac9dbSNicholas Bellinger return read_bytes; 2226c66ac9dbSNicholas Bellinger } 2227c66ac9dbSNicholas Bellinger 22282eafd729SChristoph Hellwig static ssize_t target_dev_control_store(struct config_item *item, 22292eafd729SChristoph Hellwig const char *page, size_t count) 2230c66ac9dbSNicholas Bellinger { 22312eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2232c66ac9dbSNicholas Bellinger 22330a06d430SChristoph Hellwig return dev->transport->set_configfs_dev_params(dev, page, count); 2234c66ac9dbSNicholas Bellinger } 2235c66ac9dbSNicholas Bellinger 22362eafd729SChristoph Hellwig static ssize_t target_dev_alias_show(struct config_item *item, char *page) 2237c66ac9dbSNicholas Bellinger { 22382eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2239c66ac9dbSNicholas Bellinger 22400fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 2241c66ac9dbSNicholas Bellinger return 0; 2242c66ac9dbSNicholas Bellinger 22430fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 2244c66ac9dbSNicholas Bellinger } 2245c66ac9dbSNicholas Bellinger 22462eafd729SChristoph Hellwig static ssize_t target_dev_alias_store(struct config_item *item, 22472eafd729SChristoph Hellwig const char *page, size_t count) 2248c66ac9dbSNicholas Bellinger { 22492eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 22500fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2251c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2252c66ac9dbSNicholas Bellinger 2253c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 22546708bb27SAndy Grover pr_err("alias count: %d exceeds" 2255c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 2256c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 2257c66ac9dbSNicholas Bellinger return -EINVAL; 2258c66ac9dbSNicholas Bellinger } 2259c66ac9dbSNicholas Bellinger 22600fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 22613011684cSDan Carpenter if (!read_bytes) 22623011684cSDan Carpenter return -EINVAL; 22630fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 22640fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 22650877eafdSSebastian Andrzej Siewior 22660fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 22673011684cSDan Carpenter 22686708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 2269c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 22700fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 22710fd97ccfSChristoph Hellwig dev->dev_alias); 2272c66ac9dbSNicholas Bellinger 2273c66ac9dbSNicholas Bellinger return read_bytes; 2274c66ac9dbSNicholas Bellinger } 2275c66ac9dbSNicholas Bellinger 22762eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) 2277c66ac9dbSNicholas Bellinger { 22782eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2279c66ac9dbSNicholas Bellinger 22800fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 2281c66ac9dbSNicholas Bellinger return 0; 2282c66ac9dbSNicholas Bellinger 22830fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 2284c66ac9dbSNicholas Bellinger } 2285c66ac9dbSNicholas Bellinger 22862eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_store(struct config_item *item, 22872eafd729SChristoph Hellwig const char *page, size_t count) 2288c66ac9dbSNicholas Bellinger { 22892eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 22900fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2291c66ac9dbSNicholas Bellinger ssize_t read_bytes; 2292c66ac9dbSNicholas Bellinger 2293c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 22946708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 2295c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 2296c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 2297c66ac9dbSNicholas Bellinger return -EINVAL; 2298c66ac9dbSNicholas Bellinger } 2299c66ac9dbSNicholas Bellinger 23000fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 2301c66ac9dbSNicholas Bellinger "%s", page); 23023011684cSDan Carpenter if (!read_bytes) 23033011684cSDan Carpenter return -EINVAL; 23040fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 23050fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 23060877eafdSSebastian Andrzej Siewior 23070fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 23083011684cSDan Carpenter 23096708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 2310c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 23110fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 23120fd97ccfSChristoph Hellwig dev->udev_path); 2313c66ac9dbSNicholas Bellinger 2314c66ac9dbSNicholas Bellinger return read_bytes; 2315c66ac9dbSNicholas Bellinger } 2316c66ac9dbSNicholas Bellinger 23172eafd729SChristoph Hellwig static ssize_t target_dev_enable_show(struct config_item *item, char *page) 231864146db7SAndy Grover { 23192eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 232064146db7SAndy Grover 2321cb0f32e1SMike Christie return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); 232264146db7SAndy Grover } 232364146db7SAndy Grover 23242eafd729SChristoph Hellwig static ssize_t target_dev_enable_store(struct config_item *item, 23252eafd729SChristoph Hellwig const char *page, size_t count) 2326c66ac9dbSNicholas Bellinger { 23272eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2328c66ac9dbSNicholas Bellinger char *ptr; 23290fd97ccfSChristoph Hellwig int ret; 2330c66ac9dbSNicholas Bellinger 2331c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 23326708bb27SAndy Grover if (!ptr) { 23336708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 2334c66ac9dbSNicholas Bellinger " is \"1\"\n"); 2335c66ac9dbSNicholas Bellinger return -EINVAL; 2336c66ac9dbSNicholas Bellinger } 2337c66ac9dbSNicholas Bellinger 23380fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 23390fd97ccfSChristoph Hellwig if (ret) 23400fd97ccfSChristoph Hellwig return ret; 2341c66ac9dbSNicholas Bellinger return count; 2342c66ac9dbSNicholas Bellinger } 2343c66ac9dbSNicholas Bellinger 23442eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) 2345c66ac9dbSNicholas Bellinger { 23462eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2347c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 2348c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2349c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2350c66ac9dbSNicholas Bellinger ssize_t len = 0; 2351c66ac9dbSNicholas Bellinger 2352c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 2353c87fbd56SChristoph Hellwig if (!lu_gp_mem) 2354c87fbd56SChristoph Hellwig return 0; 2355c66ac9dbSNicholas Bellinger 2356c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2357c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 23586708bb27SAndy Grover if (lu_gp) { 2359c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 2360c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 2361c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 2362c66ac9dbSNicholas Bellinger } 2363c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2364c66ac9dbSNicholas Bellinger 2365c66ac9dbSNicholas Bellinger return len; 2366c66ac9dbSNicholas Bellinger } 2367c66ac9dbSNicholas Bellinger 23682eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, 23692eafd729SChristoph Hellwig const char *page, size_t count) 2370c66ac9dbSNicholas Bellinger { 23712eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 23720fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2373c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 2374c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 23752d4e2dafSChaitanya Kulkarni unsigned char buf[LU_GROUP_NAME_BUF] = { }; 2376c66ac9dbSNicholas Bellinger int move = 0; 2377c66ac9dbSNicholas Bellinger 2378c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 2379c87fbd56SChristoph Hellwig if (!lu_gp_mem) 23809105bfc0SAndy Grover return count; 2381c87fbd56SChristoph Hellwig 2382c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 23836708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 2384c66ac9dbSNicholas Bellinger return -EINVAL; 2385c66ac9dbSNicholas Bellinger } 2386c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 2387c66ac9dbSNicholas Bellinger /* 2388c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 2389c66ac9dbSNicholas Bellinger * making a new group association. 2390c66ac9dbSNicholas Bellinger */ 2391c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 2392c66ac9dbSNicholas Bellinger /* 2393c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 2394c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 2395c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 2396c66ac9dbSNicholas Bellinger */ 2397c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 23986708bb27SAndy Grover if (!lu_gp_new) 2399c66ac9dbSNicholas Bellinger return -ENODEV; 2400c66ac9dbSNicholas Bellinger } 2401c66ac9dbSNicholas Bellinger 2402c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2403c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 24046708bb27SAndy Grover if (lu_gp) { 2405c66ac9dbSNicholas Bellinger /* 2406c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 2407c66ac9dbSNicholas Bellinger * with NULL 2408c66ac9dbSNicholas Bellinger */ 24096708bb27SAndy Grover if (!lu_gp_new) { 24106708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 2411c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 2412c66ac9dbSNicholas Bellinger " %hu\n", 2413c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 24140fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2415c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 2416c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2417c66ac9dbSNicholas Bellinger 2418c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2419c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2420c66ac9dbSNicholas Bellinger 2421c66ac9dbSNicholas Bellinger return count; 2422c66ac9dbSNicholas Bellinger } 2423c66ac9dbSNicholas Bellinger /* 2424c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 2425c66ac9dbSNicholas Bellinger */ 2426c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2427c66ac9dbSNicholas Bellinger move = 1; 2428c66ac9dbSNicholas Bellinger } 2429c66ac9dbSNicholas Bellinger /* 2430c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 2431c66ac9dbSNicholas Bellinger */ 2432c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 2433c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2434c66ac9dbSNicholas Bellinger 24356708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 2436c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 2437c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 2438c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 24390fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2440c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 2441c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 2442c66ac9dbSNicholas Bellinger 2443c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 2444c66ac9dbSNicholas Bellinger return count; 2445c66ac9dbSNicholas Bellinger } 2446c66ac9dbSNicholas Bellinger 24472eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) 2448229d4f11SHannes Reinecke { 24492eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2450229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 2451229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 2452229d4f11SHannes Reinecke char *b = page; 2453229d4f11SHannes Reinecke int bl = 0; 2454229d4f11SHannes Reinecke char state; 2455229d4f11SHannes Reinecke 2456229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 2457229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 2458229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 2459229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 2460229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 2461229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 2462229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 2463229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 2464229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 2465229d4f11SHannes Reinecke lba_map_mem_list) { 2466229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 2467229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 2468229d4f11SHannes Reinecke state = 'O'; 2469229d4f11SHannes Reinecke break; 2470229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 2471229d4f11SHannes Reinecke state = 'A'; 2472229d4f11SHannes Reinecke break; 2473229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 2474229d4f11SHannes Reinecke state = 'S'; 2475229d4f11SHannes Reinecke break; 2476229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 2477229d4f11SHannes Reinecke state = 'U'; 2478229d4f11SHannes Reinecke break; 2479229d4f11SHannes Reinecke default: 2480229d4f11SHannes Reinecke state = '.'; 2481229d4f11SHannes Reinecke break; 2482229d4f11SHannes Reinecke } 2483229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 2484229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 2485229d4f11SHannes Reinecke } 2486229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 2487229d4f11SHannes Reinecke } 2488229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 2489229d4f11SHannes Reinecke return bl; 2490229d4f11SHannes Reinecke } 2491229d4f11SHannes Reinecke 24922eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_store(struct config_item *item, 24932eafd729SChristoph Hellwig const char *page, size_t count) 2494229d4f11SHannes Reinecke { 24952eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2496229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 2497229d4f11SHannes Reinecke struct list_head lba_list; 2498f0a8afecSBart Van Assche char *map_entries, *orig, *ptr; 2499229d4f11SHannes Reinecke char state; 2500229d4f11SHannes Reinecke int pg_num = -1, pg; 2501229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 2502229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 2503229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 2504229d4f11SHannes Reinecke 2505f0a8afecSBart Van Assche orig = map_entries = kstrdup(page, GFP_KERNEL); 2506229d4f11SHannes Reinecke if (!map_entries) 2507229d4f11SHannes Reinecke return -ENOMEM; 2508229d4f11SHannes Reinecke 2509229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 2510229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 2511229d4f11SHannes Reinecke if (!*ptr) 2512229d4f11SHannes Reinecke continue; 2513229d4f11SHannes Reinecke 2514229d4f11SHannes Reinecke if (num == 0) { 2515229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 2516229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 2517229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2518229d4f11SHannes Reinecke ret = -EINVAL; 2519229d4f11SHannes Reinecke break; 2520229d4f11SHannes Reinecke } 2521229d4f11SHannes Reinecke num++; 2522229d4f11SHannes Reinecke continue; 2523229d4f11SHannes Reinecke } 2524229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 2525229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2526229d4f11SHannes Reinecke ret = -EINVAL; 2527229d4f11SHannes Reinecke break; 2528229d4f11SHannes Reinecke } 2529229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2530229d4f11SHannes Reinecke if (!ptr) { 2531229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 2532229d4f11SHannes Reinecke ret = -EINVAL; 2533229d4f11SHannes Reinecke break; 2534229d4f11SHannes Reinecke } 2535229d4f11SHannes Reinecke ptr++; 2536229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2537229d4f11SHannes Reinecke if (!ptr) { 2538229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 2539229d4f11SHannes Reinecke num); 2540229d4f11SHannes Reinecke ret = -EINVAL; 2541229d4f11SHannes Reinecke break; 2542229d4f11SHannes Reinecke } 2543229d4f11SHannes Reinecke ptr++; 2544229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 2545229d4f11SHannes Reinecke start_lba, end_lba); 2546229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 2547229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 2548229d4f11SHannes Reinecke break; 2549229d4f11SHannes Reinecke } 2550229d4f11SHannes Reinecke pg = 0; 2551229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 2552229d4f11SHannes Reinecke switch (state) { 2553229d4f11SHannes Reinecke case 'O': 2554229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 2555229d4f11SHannes Reinecke break; 2556229d4f11SHannes Reinecke case 'A': 2557229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 2558229d4f11SHannes Reinecke break; 2559229d4f11SHannes Reinecke case 'S': 2560229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 2561229d4f11SHannes Reinecke break; 2562229d4f11SHannes Reinecke case 'U': 2563229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 2564229d4f11SHannes Reinecke break; 2565229d4f11SHannes Reinecke default: 2566229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 2567229d4f11SHannes Reinecke ret = -EINVAL; 2568229d4f11SHannes Reinecke goto out; 2569229d4f11SHannes Reinecke } 2570229d4f11SHannes Reinecke 2571229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 2572229d4f11SHannes Reinecke pg_id, alua_state); 2573229d4f11SHannes Reinecke if (ret) { 2574229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 2575229d4f11SHannes Reinecke "at line %d\n", 2576229d4f11SHannes Reinecke pg_id, state, num); 2577229d4f11SHannes Reinecke break; 2578229d4f11SHannes Reinecke } 2579229d4f11SHannes Reinecke pg++; 2580229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2581229d4f11SHannes Reinecke if (ptr) 2582229d4f11SHannes Reinecke ptr++; 2583229d4f11SHannes Reinecke else 2584229d4f11SHannes Reinecke break; 2585229d4f11SHannes Reinecke } 2586229d4f11SHannes Reinecke if (pg_num == -1) 2587229d4f11SHannes Reinecke pg_num = pg; 2588229d4f11SHannes Reinecke else if (pg != pg_num) { 2589229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 2590229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 2591229d4f11SHannes Reinecke ret = -EINVAL; 2592229d4f11SHannes Reinecke break; 2593229d4f11SHannes Reinecke } 2594229d4f11SHannes Reinecke num++; 2595229d4f11SHannes Reinecke } 2596229d4f11SHannes Reinecke out: 2597229d4f11SHannes Reinecke if (ret) { 2598229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 2599229d4f11SHannes Reinecke count = ret; 2600229d4f11SHannes Reinecke } else 2601229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 2602229d4f11SHannes Reinecke segment_size, segment_mult); 2603f0a8afecSBart Van Assche kfree(orig); 2604229d4f11SHannes Reinecke return count; 2605229d4f11SHannes Reinecke } 2606229d4f11SHannes Reinecke 26072eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_dev_, info); 26082eafd729SChristoph Hellwig CONFIGFS_ATTR_WO(target_dev_, control); 26092eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alias); 26102eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, udev_path); 26112eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, enable); 26122eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alua_lu_gp); 26132eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, lba_map); 2614229d4f11SHannes Reinecke 261573112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 26162eafd729SChristoph Hellwig &target_dev_attr_info, 26172eafd729SChristoph Hellwig &target_dev_attr_control, 26182eafd729SChristoph Hellwig &target_dev_attr_alias, 26192eafd729SChristoph Hellwig &target_dev_attr_udev_path, 26202eafd729SChristoph Hellwig &target_dev_attr_enable, 26212eafd729SChristoph Hellwig &target_dev_attr_alua_lu_gp, 26222eafd729SChristoph Hellwig &target_dev_attr_lba_map, 2623c66ac9dbSNicholas Bellinger NULL, 2624c66ac9dbSNicholas Bellinger }; 2625c66ac9dbSNicholas Bellinger 2626c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 2627c66ac9dbSNicholas Bellinger { 26280fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 26290fd97ccfSChristoph Hellwig struct se_device *dev = 26300fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2631c66ac9dbSNicholas Bellinger 26320fd97ccfSChristoph Hellwig target_free_device(dev); 2633c66ac9dbSNicholas Bellinger } 2634c66ac9dbSNicholas Bellinger 2635c17cd249SNicholas Bellinger /* 2636c17cd249SNicholas Bellinger * Used in target_core_fabric_configfs.c to verify valid se_device symlink 2637c17cd249SNicholas Bellinger * within target_fabric_port_link() 2638c17cd249SNicholas Bellinger */ 2639c17cd249SNicholas Bellinger struct configfs_item_operations target_core_dev_item_ops = { 2640c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 2641c66ac9dbSNicholas Bellinger }; 2642c66ac9dbSNicholas Bellinger 264373112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 2644c66ac9dbSNicholas Bellinger 264573112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 2646c66ac9dbSNicholas Bellinger 2647c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2648c66ac9dbSNicholas Bellinger 26492eafd729SChristoph Hellwig static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) 2650c66ac9dbSNicholas Bellinger { 26512eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_lu_gp, 26522eafd729SChristoph Hellwig lu_gp_group); 26532eafd729SChristoph Hellwig } 26542eafd729SChristoph Hellwig 26552eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) 26562eafd729SChristoph Hellwig { 26572eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 26582eafd729SChristoph Hellwig 26596708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2660c66ac9dbSNicholas Bellinger return 0; 2661c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2662c66ac9dbSNicholas Bellinger } 2663c66ac9dbSNicholas Bellinger 26642eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, 26652eafd729SChristoph Hellwig const char *page, size_t count) 2666c66ac9dbSNicholas Bellinger { 26672eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2668c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2669c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2670c66ac9dbSNicholas Bellinger int ret; 2671c66ac9dbSNicholas Bellinger 267257103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2673c66ac9dbSNicholas Bellinger if (ret < 0) { 267457103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2675c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 267657103d7fSJingoo Han return ret; 2677c66ac9dbSNicholas Bellinger } 2678c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 26796708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2680c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2681c66ac9dbSNicholas Bellinger return -EINVAL; 2682c66ac9dbSNicholas Bellinger } 2683c66ac9dbSNicholas Bellinger 2684c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2685c66ac9dbSNicholas Bellinger if (ret < 0) 2686c66ac9dbSNicholas Bellinger return -EINVAL; 2687c66ac9dbSNicholas Bellinger 26886708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2689c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2690c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2691c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2692c66ac9dbSNicholas Bellinger 2693c66ac9dbSNicholas Bellinger return count; 2694c66ac9dbSNicholas Bellinger } 2695c66ac9dbSNicholas Bellinger 26962eafd729SChristoph Hellwig static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) 2697c66ac9dbSNicholas Bellinger { 26982eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2699c66ac9dbSNicholas Bellinger struct se_device *dev; 2700c66ac9dbSNicholas Bellinger struct se_hba *hba; 2701c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2702c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 27032d4e2dafSChaitanya Kulkarni unsigned char buf[LU_GROUP_NAME_BUF] = { }; 2704c66ac9dbSNicholas Bellinger 2705c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2706c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2707c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 27080fd97ccfSChristoph Hellwig hba = dev->se_hba; 2709c66ac9dbSNicholas Bellinger 2710c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2711c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 27120fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2713c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2714c66ac9dbSNicholas Bellinger 2715c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 27166708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2717c66ac9dbSNicholas Bellinger "_members buffer\n"); 2718c66ac9dbSNicholas Bellinger break; 2719c66ac9dbSNicholas Bellinger } 2720c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2721c66ac9dbSNicholas Bellinger len += cur_len; 2722c66ac9dbSNicholas Bellinger } 2723c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2724c66ac9dbSNicholas Bellinger 2725c66ac9dbSNicholas Bellinger return len; 2726c66ac9dbSNicholas Bellinger } 2727c66ac9dbSNicholas Bellinger 27282eafd729SChristoph Hellwig CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); 27292eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_lu_gp_, members); 2730c66ac9dbSNicholas Bellinger 2731c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 27322eafd729SChristoph Hellwig &target_lu_gp_attr_lu_gp_id, 27332eafd729SChristoph Hellwig &target_lu_gp_attr_members, 2734c66ac9dbSNicholas Bellinger NULL, 2735c66ac9dbSNicholas Bellinger }; 2736c66ac9dbSNicholas Bellinger 27371f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 27381f6fe7cbSNicholas Bellinger { 27391f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 27401f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 27411f6fe7cbSNicholas Bellinger 27421f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 27431f6fe7cbSNicholas Bellinger } 27441f6fe7cbSNicholas Bellinger 2745c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 27461f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2747c66ac9dbSNicholas Bellinger }; 2748c66ac9dbSNicholas Bellinger 2749ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gp_cit = { 2750c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2751c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2752c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2753c66ac9dbSNicholas Bellinger }; 2754c66ac9dbSNicholas Bellinger 2755c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2756c66ac9dbSNicholas Bellinger 2757c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2758c66ac9dbSNicholas Bellinger 2759c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2760c66ac9dbSNicholas Bellinger struct config_group *group, 2761c66ac9dbSNicholas Bellinger const char *name) 2762c66ac9dbSNicholas Bellinger { 2763c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2764c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2765c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2766c66ac9dbSNicholas Bellinger 2767c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2768c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2769c66ac9dbSNicholas Bellinger return NULL; 2770c66ac9dbSNicholas Bellinger 2771c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2772c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2773c66ac9dbSNicholas Bellinger 2774c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2775c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2776c66ac9dbSNicholas Bellinger 27776708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2778c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2779c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2780c66ac9dbSNicholas Bellinger 2781c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2782c66ac9dbSNicholas Bellinger 2783c66ac9dbSNicholas Bellinger } 2784c66ac9dbSNicholas Bellinger 2785c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2786c66ac9dbSNicholas Bellinger struct config_group *group, 2787c66ac9dbSNicholas Bellinger struct config_item *item) 2788c66ac9dbSNicholas Bellinger { 2789c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2790c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2791c66ac9dbSNicholas Bellinger 27926708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2793c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2794c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 27951f6fe7cbSNicholas Bellinger /* 27961f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 27971f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 27981f6fe7cbSNicholas Bellinger */ 2799c66ac9dbSNicholas Bellinger config_item_put(item); 2800c66ac9dbSNicholas Bellinger } 2801c66ac9dbSNicholas Bellinger 2802c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2803c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2804c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2805c66ac9dbSNicholas Bellinger }; 2806c66ac9dbSNicholas Bellinger 2807ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gps_cit = { 2808c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2809c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2810c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2811c66ac9dbSNicholas Bellinger }; 2812c66ac9dbSNicholas Bellinger 2813c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2814c66ac9dbSNicholas Bellinger 2815c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2816c66ac9dbSNicholas Bellinger 28172eafd729SChristoph Hellwig static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) 28182eafd729SChristoph Hellwig { 28192eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, 28202eafd729SChristoph Hellwig tg_pt_gp_group); 28212eafd729SChristoph Hellwig } 2822c66ac9dbSNicholas Bellinger 28232eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, 2824c66ac9dbSNicholas Bellinger char *page) 2825c66ac9dbSNicholas Bellinger { 2826c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2827d19c4643SMike Christie to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); 2828c66ac9dbSNicholas Bellinger } 2829c66ac9dbSNicholas Bellinger 28302eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, 28312eafd729SChristoph Hellwig const char *page, size_t count) 2832c66ac9dbSNicholas Bellinger { 28332eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 28340fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2835c66ac9dbSNicholas Bellinger unsigned long tmp; 2836c66ac9dbSNicholas Bellinger int new_state, ret; 2837c66ac9dbSNicholas Bellinger 28386708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2839baa75afdSBart Van Assche pr_err("Unable to do implicit ALUA on invalid tg_pt_gp ID\n"); 2840c66ac9dbSNicholas Bellinger return -EINVAL; 2841c66ac9dbSNicholas Bellinger } 2842cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 2843f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2844f1453773SNicholas Bellinger " not configured\n"); 2845f1453773SNicholas Bellinger return -ENODEV; 2846f1453773SNicholas Bellinger } 2847c66ac9dbSNicholas Bellinger 284857103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2849c66ac9dbSNicholas Bellinger if (ret < 0) { 28506708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2851c66ac9dbSNicholas Bellinger " %s\n", page); 285257103d7fSJingoo Han return ret; 2853c66ac9dbSNicholas Bellinger } 2854c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2855c66ac9dbSNicholas Bellinger 2856125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2857125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2858125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2859c66ac9dbSNicholas Bellinger return -EINVAL; 2860c66ac9dbSNicholas Bellinger } 2861c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2862c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2863c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2864c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2865c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2866c66094bfSHannes Reinecke return -EINVAL; 2867c66094bfSHannes Reinecke } 2868c66ac9dbSNicholas Bellinger 28690fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2870c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2871c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2872c66ac9dbSNicholas Bellinger } 2873c66ac9dbSNicholas Bellinger 28742eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, 2875c66ac9dbSNicholas Bellinger char *page) 2876c66ac9dbSNicholas Bellinger { 28772eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2878c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2879c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2880c66ac9dbSNicholas Bellinger } 2881c66ac9dbSNicholas Bellinger 28822eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_store( 28832eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2884c66ac9dbSNicholas Bellinger { 28852eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2886c66ac9dbSNicholas Bellinger unsigned long tmp; 2887c66ac9dbSNicholas Bellinger int new_status, ret; 2888c66ac9dbSNicholas Bellinger 28896708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2890baa75afdSBart Van Assche pr_err("Unable to set ALUA access status on invalid tg_pt_gp ID\n"); 2891c66ac9dbSNicholas Bellinger return -EINVAL; 2892c66ac9dbSNicholas Bellinger } 2893c66ac9dbSNicholas Bellinger 289457103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2895c66ac9dbSNicholas Bellinger if (ret < 0) { 28966708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2897c66ac9dbSNicholas Bellinger " from %s\n", page); 289857103d7fSJingoo Han return ret; 2899c66ac9dbSNicholas Bellinger } 2900c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2901c66ac9dbSNicholas Bellinger 2902c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2903125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2904125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 29056708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2906c66ac9dbSNicholas Bellinger new_status); 2907c66ac9dbSNicholas Bellinger return -EINVAL; 2908c66ac9dbSNicholas Bellinger } 2909c66ac9dbSNicholas Bellinger 2910c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2911c66ac9dbSNicholas Bellinger return count; 2912c66ac9dbSNicholas Bellinger } 2913c66ac9dbSNicholas Bellinger 29142eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, 2915c66ac9dbSNicholas Bellinger char *page) 2916c66ac9dbSNicholas Bellinger { 29172eafd729SChristoph Hellwig return core_alua_show_access_type(to_tg_pt_gp(item), page); 2918c66ac9dbSNicholas Bellinger } 2919c66ac9dbSNicholas Bellinger 29202eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, 29212eafd729SChristoph Hellwig const char *page, size_t count) 2922c66ac9dbSNicholas Bellinger { 29232eafd729SChristoph Hellwig return core_alua_store_access_type(to_tg_pt_gp(item), page, count); 2924c66ac9dbSNicholas Bellinger } 2925c66ac9dbSNicholas Bellinger 29262eafd729SChristoph Hellwig #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ 29272eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ 29282eafd729SChristoph Hellwig struct config_item *item, char *p) \ 2929b0a382c5SHannes Reinecke { \ 29302eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 29312eafd729SChristoph Hellwig return sprintf(p, "%d\n", \ 29322eafd729SChristoph Hellwig !!(t->tg_pt_gp_alua_supported_states & _bit)); \ 29332eafd729SChristoph Hellwig } \ 29342eafd729SChristoph Hellwig \ 29352eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ 29362eafd729SChristoph Hellwig struct config_item *item, const char *p, size_t c) \ 2937b0a382c5SHannes Reinecke { \ 29382eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 2939b0a382c5SHannes Reinecke unsigned long tmp; \ 2940b0a382c5SHannes Reinecke int ret; \ 2941b0a382c5SHannes Reinecke \ 2942b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2943baa75afdSBart Van Assche pr_err("Unable to set " #_name " ALUA state on invalid tg_pt_gp ID\n"); \ 2944b0a382c5SHannes Reinecke return -EINVAL; \ 2945b0a382c5SHannes Reinecke } \ 2946b0a382c5SHannes Reinecke \ 2947b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2948b0a382c5SHannes Reinecke if (ret < 0) { \ 2949b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2950b0a382c5SHannes Reinecke return -EINVAL; \ 2951b0a382c5SHannes Reinecke } \ 2952b0a382c5SHannes Reinecke if (tmp > 1) { \ 2953b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2954b0a382c5SHannes Reinecke return -EINVAL; \ 2955b0a382c5SHannes Reinecke } \ 29561f0b030cSSebastian Herbszt if (tmp) \ 29572eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states |= _bit; \ 2958b0a382c5SHannes Reinecke else \ 29592eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states &= ~_bit; \ 2960b0a382c5SHannes Reinecke \ 2961b0a382c5SHannes Reinecke return c; \ 29626be526c4SHannes Reinecke } 29636be526c4SHannes Reinecke 29642eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); 29652eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); 29662eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); 29672eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); 29682eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); 29692eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); 29702eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); 29716be526c4SHannes Reinecke 29722eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_show( 29732eafd729SChristoph Hellwig struct config_item *item, char *page) 2974c66ac9dbSNicholas Bellinger { 29752eafd729SChristoph Hellwig return sprintf(page, "%d\n", 29762eafd729SChristoph Hellwig to_tg_pt_gp(item)->tg_pt_gp_write_metadata); 2977c66ac9dbSNicholas Bellinger } 2978c66ac9dbSNicholas Bellinger 29792eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_store( 29802eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2981c66ac9dbSNicholas Bellinger { 29822eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2983c66ac9dbSNicholas Bellinger unsigned long tmp; 2984c66ac9dbSNicholas Bellinger int ret; 2985c66ac9dbSNicholas Bellinger 298657103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2987c66ac9dbSNicholas Bellinger if (ret < 0) { 29886708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 298957103d7fSJingoo Han return ret; 2990c66ac9dbSNicholas Bellinger } 2991c66ac9dbSNicholas Bellinger 2992c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 29936708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2994c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2995c66ac9dbSNicholas Bellinger return -EINVAL; 2996c66ac9dbSNicholas Bellinger } 2997c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2998c66ac9dbSNicholas Bellinger 2999c66ac9dbSNicholas Bellinger return count; 3000c66ac9dbSNicholas Bellinger } 3001c66ac9dbSNicholas Bellinger 30022eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, 3003c66ac9dbSNicholas Bellinger char *page) 3004c66ac9dbSNicholas Bellinger { 30052eafd729SChristoph Hellwig return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); 3006c66ac9dbSNicholas Bellinger } 3007c66ac9dbSNicholas Bellinger 30082eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, 30092eafd729SChristoph Hellwig const char *page, size_t count) 3010c66ac9dbSNicholas Bellinger { 30112eafd729SChristoph Hellwig return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, 30122eafd729SChristoph Hellwig count); 3013c66ac9dbSNicholas Bellinger } 3014c66ac9dbSNicholas Bellinger 30152eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, 3016c66ac9dbSNicholas Bellinger char *page) 3017c66ac9dbSNicholas Bellinger { 30182eafd729SChristoph Hellwig return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); 3019c66ac9dbSNicholas Bellinger } 3020c66ac9dbSNicholas Bellinger 30212eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, 30222eafd729SChristoph Hellwig const char *page, size_t count) 3023c66ac9dbSNicholas Bellinger { 30242eafd729SChristoph Hellwig return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, 30252eafd729SChristoph Hellwig count); 3026c66ac9dbSNicholas Bellinger } 3027c66ac9dbSNicholas Bellinger 30282eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_show( 30292eafd729SChristoph Hellwig struct config_item *item, char *page) 30302eafd729SChristoph Hellwig { 30312eafd729SChristoph Hellwig return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); 30322eafd729SChristoph Hellwig } 3033c66ac9dbSNicholas Bellinger 30342eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_store( 30352eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 30362eafd729SChristoph Hellwig { 30372eafd729SChristoph Hellwig return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, 30382eafd729SChristoph Hellwig count); 30392eafd729SChristoph Hellwig } 30402eafd729SChristoph Hellwig 30412eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, 30425b9a4d72SNicholas Bellinger char *page) 30435b9a4d72SNicholas Bellinger { 30442eafd729SChristoph Hellwig return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); 30455b9a4d72SNicholas Bellinger } 30465b9a4d72SNicholas Bellinger 30472eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, 30482eafd729SChristoph Hellwig const char *page, size_t count) 30495b9a4d72SNicholas Bellinger { 30502eafd729SChristoph Hellwig return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); 30515b9a4d72SNicholas Bellinger } 30525b9a4d72SNicholas Bellinger 30532eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, 3054c66ac9dbSNicholas Bellinger char *page) 3055c66ac9dbSNicholas Bellinger { 30562eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3057c66ac9dbSNicholas Bellinger 30586708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 3059c66ac9dbSNicholas Bellinger return 0; 3060c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 3061c66ac9dbSNicholas Bellinger } 3062c66ac9dbSNicholas Bellinger 30632eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, 30642eafd729SChristoph Hellwig const char *page, size_t count) 3065c66ac9dbSNicholas Bellinger { 30662eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3067c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 3068c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 3069c66ac9dbSNicholas Bellinger int ret; 3070c66ac9dbSNicholas Bellinger 307157103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 3072c66ac9dbSNicholas Bellinger if (ret < 0) { 30733d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", 30743d035237SHannes Reinecke page); 307557103d7fSJingoo Han return ret; 3076c66ac9dbSNicholas Bellinger } 3077c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 30783d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", 30793d035237SHannes Reinecke tg_pt_gp_id); 3080c66ac9dbSNicholas Bellinger return -EINVAL; 3081c66ac9dbSNicholas Bellinger } 3082c66ac9dbSNicholas Bellinger 3083c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 3084c66ac9dbSNicholas Bellinger if (ret < 0) 3085c66ac9dbSNicholas Bellinger return -EINVAL; 3086c66ac9dbSNicholas Bellinger 30876708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 3088c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 3089c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 3090c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 3091c66ac9dbSNicholas Bellinger 3092c66ac9dbSNicholas Bellinger return count; 3093c66ac9dbSNicholas Bellinger } 3094c66ac9dbSNicholas Bellinger 30952eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_members_show(struct config_item *item, 3096c66ac9dbSNicholas Bellinger char *page) 3097c66ac9dbSNicholas Bellinger { 30982eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 3099c66ac9dbSNicholas Bellinger struct se_lun *lun; 3100c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 31012d4e2dafSChaitanya Kulkarni unsigned char buf[TG_PT_GROUP_NAME_BUF] = { }; 3102c66ac9dbSNicholas Bellinger 3103c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 3104adf653f9SChristoph Hellwig list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, 3105adf653f9SChristoph Hellwig lun_tg_pt_gp_link) { 3106adf653f9SChristoph Hellwig struct se_portal_group *tpg = lun->lun_tpg; 3107c66ac9dbSNicholas Bellinger 3108c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 310930c7ca93SDavid Disseldorp "/%s\n", tpg->se_tpg_tfo->fabric_name, 3110e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 3111e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 3112c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 3113c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 3114c66ac9dbSNicholas Bellinger 3115c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 31166708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 3117c66ac9dbSNicholas Bellinger "_members buffer\n"); 3118c66ac9dbSNicholas Bellinger break; 3119c66ac9dbSNicholas Bellinger } 3120c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 3121c66ac9dbSNicholas Bellinger len += cur_len; 3122c66ac9dbSNicholas Bellinger } 3123c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 3124c66ac9dbSNicholas Bellinger 3125c66ac9dbSNicholas Bellinger return len; 3126c66ac9dbSNicholas Bellinger } 3127c66ac9dbSNicholas Bellinger 31282eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); 31292eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); 31302eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); 31312eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); 31322eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); 31332eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); 31342eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); 31352eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); 31362eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); 31372eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); 31382eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); 31392eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); 31402eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); 31412eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); 31422eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, preferred); 31432eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); 31442eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); 3145c66ac9dbSNicholas Bellinger 3146c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 31472eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_state, 31482eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_status, 31492eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_type, 31502eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_transitioning, 31512eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_offline, 31522eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_lba_dependent, 31532eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_unavailable, 31542eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_standby, 31552eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_nonoptimized, 31562eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_optimized, 31572eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_write_metadata, 31582eafd729SChristoph Hellwig &target_tg_pt_gp_attr_nonop_delay_msecs, 31592eafd729SChristoph Hellwig &target_tg_pt_gp_attr_trans_delay_msecs, 31602eafd729SChristoph Hellwig &target_tg_pt_gp_attr_implicit_trans_secs, 31612eafd729SChristoph Hellwig &target_tg_pt_gp_attr_preferred, 31622eafd729SChristoph Hellwig &target_tg_pt_gp_attr_tg_pt_gp_id, 31632eafd729SChristoph Hellwig &target_tg_pt_gp_attr_members, 3164c66ac9dbSNicholas Bellinger NULL, 3165c66ac9dbSNicholas Bellinger }; 3166c66ac9dbSNicholas Bellinger 31671f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 31681f6fe7cbSNicholas Bellinger { 31691f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 31701f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 31711f6fe7cbSNicholas Bellinger 31721f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 31731f6fe7cbSNicholas Bellinger } 31741f6fe7cbSNicholas Bellinger 3175c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 31761f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 3177c66ac9dbSNicholas Bellinger }; 3178c66ac9dbSNicholas Bellinger 3179ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_tg_pt_gp_cit = { 3180c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 3181c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 3182c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3183c66ac9dbSNicholas Bellinger }; 3184c66ac9dbSNicholas Bellinger 3185c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 3186c66ac9dbSNicholas Bellinger 318772aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3188c66ac9dbSNicholas Bellinger 3189c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 3190c66ac9dbSNicholas Bellinger struct config_group *group, 3191c66ac9dbSNicholas Bellinger const char *name) 3192c66ac9dbSNicholas Bellinger { 3193c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 3194c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 3195c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3196c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 3197c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 3198c66ac9dbSNicholas Bellinger 31990fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 32006708bb27SAndy Grover if (!tg_pt_gp) 3201c66ac9dbSNicholas Bellinger return NULL; 3202c66ac9dbSNicholas Bellinger 3203c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 3204c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 3205c66ac9dbSNicholas Bellinger 3206c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 3207c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 3208c66ac9dbSNicholas Bellinger 32096708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 3210c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 3211c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 3212c66ac9dbSNicholas Bellinger 3213c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 3214c66ac9dbSNicholas Bellinger } 3215c66ac9dbSNicholas Bellinger 3216c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 3217c66ac9dbSNicholas Bellinger struct config_group *group, 3218c66ac9dbSNicholas Bellinger struct config_item *item) 3219c66ac9dbSNicholas Bellinger { 3220c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 3221c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 3222c66ac9dbSNicholas Bellinger 32236708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 3224c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 3225c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 32261f6fe7cbSNicholas Bellinger /* 32271f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 32281f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 32291f6fe7cbSNicholas Bellinger */ 3230c66ac9dbSNicholas Bellinger config_item_put(item); 3231c66ac9dbSNicholas Bellinger } 3232c66ac9dbSNicholas Bellinger 3233c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 3234c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 3235c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 3236c66ac9dbSNicholas Bellinger }; 3237c66ac9dbSNicholas Bellinger 323872aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 3239c66ac9dbSNicholas Bellinger 324072aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 3241c66ac9dbSNicholas Bellinger 3242c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 3243c66ac9dbSNicholas Bellinger 3244c66ac9dbSNicholas Bellinger /* 3245c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 3246c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 3247c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 3248c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 3249c66ac9dbSNicholas Bellinger */ 3250ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_cit = { 3251c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3252c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3253c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3254c66ac9dbSNicholas Bellinger }; 3255c66ac9dbSNicholas Bellinger 3256c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 3257c66ac9dbSNicholas Bellinger 3258d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 325912d23384SNicholas Bellinger 326012d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 326112d23384SNicholas Bellinger struct config_group *group, 326212d23384SNicholas Bellinger const char *name) 326312d23384SNicholas Bellinger { 326412d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 326512d23384SNicholas Bellinger } 326612d23384SNicholas Bellinger 326712d23384SNicholas Bellinger static void target_core_stat_rmdir( 326812d23384SNicholas Bellinger struct config_group *group, 326912d23384SNicholas Bellinger struct config_item *item) 327012d23384SNicholas Bellinger { 327112d23384SNicholas Bellinger return; 327212d23384SNicholas Bellinger } 327312d23384SNicholas Bellinger 327412d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 327512d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 327612d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 327712d23384SNicholas Bellinger }; 327812d23384SNicholas Bellinger 3279d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 328012d23384SNicholas Bellinger 3281d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 328212d23384SNicholas Bellinger 3283c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 3284c66ac9dbSNicholas Bellinger 3285c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 3286c66ac9dbSNicholas Bellinger struct config_group *group, 3287c66ac9dbSNicholas Bellinger const char *name) 3288c66ac9dbSNicholas Bellinger { 3289c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 3290c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 3291c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 32920a06d430SChristoph Hellwig struct target_backend *tb = hba->backend; 32930fd97ccfSChristoph Hellwig struct se_device *dev; 329412d23384SNicholas Bellinger int errno = -ENOMEM, ret; 3295c66ac9dbSNicholas Bellinger 329612d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 329712d23384SNicholas Bellinger if (ret) 329812d23384SNicholas Bellinger return ERR_PTR(ret); 3299c66ac9dbSNicholas Bellinger 33000fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 33010fd97ccfSChristoph Hellwig if (!dev) 33020fd97ccfSChristoph Hellwig goto out_unlock; 3303c66ac9dbSNicholas Bellinger 33041ae1602dSChristoph Hellwig config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); 3305c66ac9dbSNicholas Bellinger 33068dc31ff9SMike Christie config_group_init_type_name(&dev->dev_action_group, "action", 33078dc31ff9SMike Christie &tb->tb_dev_action_cit); 33088dc31ff9SMike Christie configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); 33098dc31ff9SMike Christie 33100fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 33110a06d430SChristoph Hellwig &tb->tb_dev_attrib_cit); 33121ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); 33131ae1602dSChristoph Hellwig 33140fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 33150a06d430SChristoph Hellwig &tb->tb_dev_pr_cit); 33161ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); 33171ae1602dSChristoph Hellwig 33180fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 33190a06d430SChristoph Hellwig &tb->tb_dev_wwn_cit); 33201ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, 33211ae1602dSChristoph Hellwig &dev->dev_group); 33221ae1602dSChristoph Hellwig 33230fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 33240a06d430SChristoph Hellwig "alua", &tb->tb_dev_alua_tg_pt_gps_cit); 33251ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, 33261ae1602dSChristoph Hellwig &dev->dev_group); 33271ae1602dSChristoph Hellwig 33280fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 33290a06d430SChristoph Hellwig "statistics", &tb->tb_dev_stat_cit); 33301ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_stat_grps.stat_group, 33311ae1602dSChristoph Hellwig &dev->dev_group); 333212d23384SNicholas Bellinger 3333c66ac9dbSNicholas Bellinger /* 333412d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 3335c66ac9dbSNicholas Bellinger */ 33360fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 33376708bb27SAndy Grover if (!tg_pt_gp) 33381ae1602dSChristoph Hellwig goto out_free_device; 33390fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 3340c66ac9dbSNicholas Bellinger 3341c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 3342c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 33431ae1602dSChristoph Hellwig configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, 33441ae1602dSChristoph Hellwig &dev->t10_alua.alua_tg_pt_gps_group); 33451ae1602dSChristoph Hellwig 334612d23384SNicholas Bellinger /* 334712d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 334812d23384SNicholas Bellinger */ 33490fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 3350c66ac9dbSNicholas Bellinger 335180890c5eSMaurizio Lombardi mutex_lock(&target_devices_lock); 335280890c5eSMaurizio Lombardi target_devices++; 335380890c5eSMaurizio Lombardi mutex_unlock(&target_devices_lock); 335480890c5eSMaurizio Lombardi 3355c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 33561ae1602dSChristoph Hellwig return &dev->dev_group; 33570fd97ccfSChristoph Hellwig 33580fd97ccfSChristoph Hellwig out_free_device: 33590fd97ccfSChristoph Hellwig target_free_device(dev); 33600fd97ccfSChristoph Hellwig out_unlock: 3361c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 336212d23384SNicholas Bellinger return ERR_PTR(errno); 3363c66ac9dbSNicholas Bellinger } 3364c66ac9dbSNicholas Bellinger 3365c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 3366c66ac9dbSNicholas Bellinger struct config_group *group, 3367c66ac9dbSNicholas Bellinger struct config_item *item) 3368c66ac9dbSNicholas Bellinger { 33690fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 33700fd97ccfSChristoph Hellwig struct se_device *dev = 33710fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 3372c66ac9dbSNicholas Bellinger struct se_hba *hba; 3373c66ac9dbSNicholas Bellinger 33740fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 3375c66ac9dbSNicholas Bellinger 33761f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 3377c66ac9dbSNicholas Bellinger 33781ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); 33791ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); 338012d23384SNicholas Bellinger 33811f6fe7cbSNicholas Bellinger /* 33821f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 33831f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 33841f6fe7cbSNicholas Bellinger */ 33850fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 3386c66ac9dbSNicholas Bellinger 33871ae1602dSChristoph Hellwig configfs_remove_default_groups(dev_cg); 33881ae1602dSChristoph Hellwig 33891f6fe7cbSNicholas Bellinger /* 33900fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 33911f6fe7cbSNicholas Bellinger */ 3392c66ac9dbSNicholas Bellinger config_item_put(item); 339380890c5eSMaurizio Lombardi 339480890c5eSMaurizio Lombardi mutex_lock(&target_devices_lock); 339580890c5eSMaurizio Lombardi target_devices--; 339680890c5eSMaurizio Lombardi mutex_unlock(&target_devices_lock); 339780890c5eSMaurizio Lombardi 3398c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 3399c66ac9dbSNicholas Bellinger } 3400c66ac9dbSNicholas Bellinger 3401c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 3402c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 3403c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 3404c66ac9dbSNicholas Bellinger }; 3405c66ac9dbSNicholas Bellinger 3406c66ac9dbSNicholas Bellinger 34072eafd729SChristoph Hellwig static inline struct se_hba *to_hba(struct config_item *item) 3408c66ac9dbSNicholas Bellinger { 34092eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_hba, hba_group); 34102eafd729SChristoph Hellwig } 34112eafd729SChristoph Hellwig 34122eafd729SChristoph Hellwig static ssize_t target_hba_info_show(struct config_item *item, char *page) 34132eafd729SChristoph Hellwig { 34142eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 34152eafd729SChristoph Hellwig 3416c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 34170a06d430SChristoph Hellwig hba->hba_id, hba->backend->ops->name, 3418ce8dd25dSChristoph Hellwig TARGET_CORE_VERSION); 3419c66ac9dbSNicholas Bellinger } 3420c66ac9dbSNicholas Bellinger 34212eafd729SChristoph Hellwig static ssize_t target_hba_mode_show(struct config_item *item, char *page) 3422c66ac9dbSNicholas Bellinger { 34232eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3424c66ac9dbSNicholas Bellinger int hba_mode = 0; 3425c66ac9dbSNicholas Bellinger 3426c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 3427c66ac9dbSNicholas Bellinger hba_mode = 1; 3428c66ac9dbSNicholas Bellinger 3429c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 3430c66ac9dbSNicholas Bellinger } 3431c66ac9dbSNicholas Bellinger 34322eafd729SChristoph Hellwig static ssize_t target_hba_mode_store(struct config_item *item, 3433c66ac9dbSNicholas Bellinger const char *page, size_t count) 3434c66ac9dbSNicholas Bellinger { 34352eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3436c66ac9dbSNicholas Bellinger unsigned long mode_flag; 3437c66ac9dbSNicholas Bellinger int ret; 3438c66ac9dbSNicholas Bellinger 34390a06d430SChristoph Hellwig if (hba->backend->ops->pmode_enable_hba == NULL) 3440c66ac9dbSNicholas Bellinger return -EINVAL; 3441c66ac9dbSNicholas Bellinger 344257103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 3443c66ac9dbSNicholas Bellinger if (ret < 0) { 34446708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 344557103d7fSJingoo Han return ret; 3446c66ac9dbSNicholas Bellinger } 3447c66ac9dbSNicholas Bellinger 34480fd97ccfSChristoph Hellwig if (hba->dev_count) { 34496708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 3450c66ac9dbSNicholas Bellinger return -EINVAL; 3451c66ac9dbSNicholas Bellinger } 3452c66ac9dbSNicholas Bellinger 34530a06d430SChristoph Hellwig ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); 3454c66ac9dbSNicholas Bellinger if (ret < 0) 3455c66ac9dbSNicholas Bellinger return -EINVAL; 3456c66ac9dbSNicholas Bellinger if (ret > 0) 3457c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 3458c66ac9dbSNicholas Bellinger else if (ret == 0) 3459c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 3460c66ac9dbSNicholas Bellinger 3461c66ac9dbSNicholas Bellinger return count; 3462c66ac9dbSNicholas Bellinger } 3463c66ac9dbSNicholas Bellinger 34642eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_, hba_info); 34652eafd729SChristoph Hellwig CONFIGFS_ATTR(target_, hba_mode); 3466c66ac9dbSNicholas Bellinger 34671f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 34681f6fe7cbSNicholas Bellinger { 34691f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 34701f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 34711f6fe7cbSNicholas Bellinger core_delete_hba(hba); 34721f6fe7cbSNicholas Bellinger } 34731f6fe7cbSNicholas Bellinger 3474c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 34752eafd729SChristoph Hellwig &target_attr_hba_info, 34762eafd729SChristoph Hellwig &target_attr_hba_mode, 3477c66ac9dbSNicholas Bellinger NULL, 3478c66ac9dbSNicholas Bellinger }; 3479c66ac9dbSNicholas Bellinger 3480c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 34811f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3482c66ac9dbSNicholas Bellinger }; 3483c66ac9dbSNicholas Bellinger 3484ece550b5SBhumika Goyal static const struct config_item_type target_core_hba_cit = { 3485c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3486c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3487c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3488c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3489c66ac9dbSNicholas Bellinger }; 3490c66ac9dbSNicholas Bellinger 3491c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3492c66ac9dbSNicholas Bellinger struct config_group *group, 3493c66ac9dbSNicholas Bellinger const char *name) 3494c66ac9dbSNicholas Bellinger { 3495c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3496c66ac9dbSNicholas Bellinger struct se_hba *hba; 34972d4e2dafSChaitanya Kulkarni char buf[TARGET_CORE_NAME_MAX_LEN] = { }; 3498c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3499c66ac9dbSNicholas Bellinger int ret; 3500c66ac9dbSNicholas Bellinger 350160d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 35026708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3503c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3504c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3505c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3506c66ac9dbSNicholas Bellinger } 3507c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3508c66ac9dbSNicholas Bellinger 3509c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 35106708bb27SAndy Grover if (!str) { 35116708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3512c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3513c66ac9dbSNicholas Bellinger } 3514c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3515c66ac9dbSNicholas Bellinger /* 3516c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3517c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3518c66ac9dbSNicholas Bellinger */ 3519c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 35206708bb27SAndy Grover if (str2) { 3521c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3522c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3523c66ac9dbSNicholas Bellinger str = str2; 3524c66ac9dbSNicholas Bellinger } else { 3525c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3526c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3527c66ac9dbSNicholas Bellinger } 3528c66ac9dbSNicholas Bellinger 352957103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3530c66ac9dbSNicholas Bellinger if (ret < 0) { 353157103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3532c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 353357103d7fSJingoo Han return ERR_PTR(ret); 3534c66ac9dbSNicholas Bellinger } 3535c66ac9dbSNicholas Bellinger /* 3536c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3537c66ac9dbSNicholas Bellinger */ 3538dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3539c66ac9dbSNicholas Bellinger 3540c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3541c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3542c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3543c66ac9dbSNicholas Bellinger 3544c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3545c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3546c66ac9dbSNicholas Bellinger 3547c66ac9dbSNicholas Bellinger return &hba->hba_group; 3548c66ac9dbSNicholas Bellinger } 3549c66ac9dbSNicholas Bellinger 3550c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3551c66ac9dbSNicholas Bellinger struct config_group *group, 3552c66ac9dbSNicholas Bellinger struct config_item *item) 3553c66ac9dbSNicholas Bellinger { 35541f6fe7cbSNicholas Bellinger /* 35551f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 35561f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 35571f6fe7cbSNicholas Bellinger */ 3558c66ac9dbSNicholas Bellinger config_item_put(item); 3559c66ac9dbSNicholas Bellinger } 3560c66ac9dbSNicholas Bellinger 3561c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3562c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3563c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3564c66ac9dbSNicholas Bellinger }; 3565c66ac9dbSNicholas Bellinger 3566ece550b5SBhumika Goyal static const struct config_item_type target_core_cit = { 3567c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3568c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3569c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3570c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3571c66ac9dbSNicholas Bellinger }; 3572c66ac9dbSNicholas Bellinger 3573c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3574c66ac9dbSNicholas Bellinger 35750a06d430SChristoph Hellwig void target_setup_backend_cits(struct target_backend *tb) 357673112edcSNicholas Bellinger { 35770a06d430SChristoph Hellwig target_core_setup_dev_cit(tb); 35788dc31ff9SMike Christie target_core_setup_dev_action_cit(tb); 35790a06d430SChristoph Hellwig target_core_setup_dev_attrib_cit(tb); 35800a06d430SChristoph Hellwig target_core_setup_dev_pr_cit(tb); 35810a06d430SChristoph Hellwig target_core_setup_dev_wwn_cit(tb); 35820a06d430SChristoph Hellwig target_core_setup_dev_alua_tg_pt_gps_cit(tb); 35830a06d430SChristoph Hellwig target_core_setup_dev_stat_cit(tb); 358473112edcSNicholas Bellinger } 358573112edcSNicholas Bellinger 358678a6295cSLee Duncan static void target_init_dbroot(void) 358778a6295cSLee Duncan { 358878a6295cSLee Duncan struct file *fp; 358978a6295cSLee Duncan 359078a6295cSLee Duncan snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); 359178a6295cSLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 359278a6295cSLee Duncan if (IS_ERR(fp)) { 359378a6295cSLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 359478a6295cSLee Duncan return; 359578a6295cSLee Duncan } 359678a6295cSLee Duncan if (!S_ISDIR(file_inode(fp)->i_mode)) { 359778a6295cSLee Duncan filp_close(fp, NULL); 359878a6295cSLee Duncan pr_err("db_root: not a valid directory: %s\n", db_root_stage); 359978a6295cSLee Duncan return; 360078a6295cSLee Duncan } 360178a6295cSLee Duncan filp_close(fp, NULL); 360278a6295cSLee Duncan 360378a6295cSLee Duncan strncpy(db_root, db_root_stage, DB_ROOT_LEN); 360478a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 360578a6295cSLee Duncan } 360678a6295cSLee Duncan 360754550fabSAxel Lin static int __init target_core_init_configfs(void) 3608c66ac9dbSNicholas Bellinger { 3609d588cf8fSChristoph Hellwig struct configfs_subsystem *subsys = &target_core_fabrics; 3610c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3611c66ac9dbSNicholas Bellinger int ret; 3612c66ac9dbSNicholas Bellinger 36136708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3614c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3615c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3616c66ac9dbSNicholas Bellinger 3617c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3618c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3619c66ac9dbSNicholas Bellinger 3620e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3621c66ac9dbSNicholas Bellinger if (ret < 0) 3622e3d6f909SAndy Grover return ret; 3623c66ac9dbSNicholas Bellinger /* 3624c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3625c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3626c66ac9dbSNicholas Bellinger */ 36271ae1602dSChristoph Hellwig config_group_init_type_name(&target_core_hbagroup, "core", 36281ae1602dSChristoph Hellwig &target_core_cit); 36291ae1602dSChristoph Hellwig configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); 3630c66ac9dbSNicholas Bellinger 3631c66ac9dbSNicholas Bellinger /* 3632c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3633c66ac9dbSNicholas Bellinger */ 36341ae1602dSChristoph Hellwig config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); 36351ae1602dSChristoph Hellwig configfs_add_default_group(&alua_group, &target_core_hbagroup); 36361ae1602dSChristoph Hellwig 3637c66ac9dbSNicholas Bellinger /* 3638c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3639c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3640c66ac9dbSNicholas Bellinger */ 36411ae1602dSChristoph Hellwig config_group_init_type_name(&alua_lu_gps_group, "lu_gps", 36421ae1602dSChristoph Hellwig &target_core_alua_lu_gps_cit); 36431ae1602dSChristoph Hellwig configfs_add_default_group(&alua_lu_gps_group, &alua_group); 3644c66ac9dbSNicholas Bellinger 3645c66ac9dbSNicholas Bellinger /* 3646c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3647c66ac9dbSNicholas Bellinger */ 3648c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 364937bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 365037bb7899SPeter Senna Tschudin ret = -ENOMEM; 3651c66ac9dbSNicholas Bellinger goto out_global; 365237bb7899SPeter Senna Tschudin } 3653c66ac9dbSNicholas Bellinger 3654c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3655c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 36561ae1602dSChristoph Hellwig configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); 36571ae1602dSChristoph Hellwig 3658e3d6f909SAndy Grover default_lu_gp = lu_gp; 36591ae1602dSChristoph Hellwig 3660c66ac9dbSNicholas Bellinger /* 3661c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3662c66ac9dbSNicholas Bellinger */ 3663c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3664c66ac9dbSNicholas Bellinger if (ret < 0) { 36656708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3666c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3667c66ac9dbSNicholas Bellinger goto out_global; 3668c66ac9dbSNicholas Bellinger } 36696708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3670ce8dd25dSChristoph Hellwig " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" 3671c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3672c66ac9dbSNicholas Bellinger /* 3673c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3674c66ac9dbSNicholas Bellinger */ 3675c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3676c66ac9dbSNicholas Bellinger if (ret < 0) 3677c66ac9dbSNicholas Bellinger goto out; 3678c66ac9dbSNicholas Bellinger 36790d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 36800d0f9dfbSRoland Dreier if (ret < 0) 3681c66ac9dbSNicholas Bellinger goto out; 3682c66ac9dbSNicholas Bellinger 3683f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3684f99715acSNicholas Bellinger if (ret < 0) 3685f99715acSNicholas Bellinger goto out; 3686f99715acSNicholas Bellinger 368778a6295cSLee Duncan target_init_dbroot(); 368878a6295cSLee Duncan 3689c66ac9dbSNicholas Bellinger return 0; 3690c66ac9dbSNicholas Bellinger 3691c66ac9dbSNicholas Bellinger out: 3692c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3693c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3694c66ac9dbSNicholas Bellinger rd_module_exit(); 3695c66ac9dbSNicholas Bellinger out_global: 3696e3d6f909SAndy Grover if (default_lu_gp) { 3697e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3698e3d6f909SAndy Grover default_lu_gp = NULL; 3699c66ac9dbSNicholas Bellinger } 3700e3d6f909SAndy Grover release_se_kmem_caches(); 3701e3d6f909SAndy Grover return ret; 3702c66ac9dbSNicholas Bellinger } 3703c66ac9dbSNicholas Bellinger 370454550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3705c66ac9dbSNicholas Bellinger { 37061ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_lu_gps_group); 37071ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_group); 37081ae1602dSChristoph Hellwig configfs_remove_default_groups(&target_core_hbagroup); 3709c66ac9dbSNicholas Bellinger 37107c2bf6e9SNicholas Bellinger /* 37117c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 37127c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 37137c2bf6e9SNicholas Bellinger */ 3714d588cf8fSChristoph Hellwig configfs_unregister_subsystem(&target_core_fabrics); 3715c66ac9dbSNicholas Bellinger 3716e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3717e3d6f909SAndy Grover default_lu_gp = NULL; 37187c2bf6e9SNicholas Bellinger 37196708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3720c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3721c66ac9dbSNicholas Bellinger 3722c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3723c66ac9dbSNicholas Bellinger rd_module_exit(); 3724f99715acSNicholas Bellinger target_xcopy_release_pt(); 3725e3d6f909SAndy Grover release_se_kmem_caches(); 3726c66ac9dbSNicholas Bellinger } 3727c66ac9dbSNicholas Bellinger 3728c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3729c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3730c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3731c66ac9dbSNicholas Bellinger 3732c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3733c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3734