1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_configfs.c 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains ConfigFS logic for the Generic Target Engine project. 5c66ac9dbSNicholas Bellinger * 64c76251eSNicholas Bellinger * (c) Copyright 2008-2013 Datera, Inc. 7c66ac9dbSNicholas Bellinger * 8c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 9c66ac9dbSNicholas Bellinger * 10c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 13c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 14c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 15c66ac9dbSNicholas Bellinger * (at your option) any later version. 16c66ac9dbSNicholas Bellinger * 17c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 18c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 19c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 21c66ac9dbSNicholas Bellinger ****************************************************************************/ 22c66ac9dbSNicholas Bellinger 23c66ac9dbSNicholas Bellinger #include <linux/module.h> 24c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 25c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 26c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 27c66ac9dbSNicholas Bellinger #include <linux/init.h> 28c66ac9dbSNicholas Bellinger #include <linux/fs.h> 29c66ac9dbSNicholas Bellinger #include <linux/namei.h> 30c66ac9dbSNicholas Bellinger #include <linux/slab.h> 31c66ac9dbSNicholas Bellinger #include <linux/types.h> 32c66ac9dbSNicholas Bellinger #include <linux/delay.h> 33c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 34c66ac9dbSNicholas Bellinger #include <linux/string.h> 35c66ac9dbSNicholas Bellinger #include <linux/parser.h> 36c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 37c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 38e3d6f909SAndy Grover #include <linux/spinlock.h> 39c66ac9dbSNicholas Bellinger 40c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 41c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 43c66ac9dbSNicholas Bellinger 44e26d99aeSChristoph Hellwig #include "target_core_internal.h" 45c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 46c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 47c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 48f99715acSNicholas Bellinger #include "target_core_xcopy.h" 49c66ac9dbSNicholas Bellinger 5073112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 510a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 5273112edcSNicholas Bellinger { \ 530a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 5473112edcSNicholas Bellinger \ 5573112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 5673112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 5773112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 580a06d430SChristoph Hellwig cit->ct_owner = tb->ops->owner; \ 590a06d430SChristoph Hellwig pr_debug("Setup generic %s\n", __stringify(_name)); \ 600a06d430SChristoph Hellwig } 610a06d430SChristoph Hellwig 620a06d430SChristoph Hellwig #define TB_CIT_SETUP_DRV(_name, _item_ops, _group_ops) \ 630a06d430SChristoph Hellwig static void target_core_setup_##_name##_cit(struct target_backend *tb) \ 640a06d430SChristoph Hellwig { \ 650a06d430SChristoph Hellwig struct config_item_type *cit = &tb->tb_##_name##_cit; \ 660a06d430SChristoph Hellwig \ 670a06d430SChristoph Hellwig cit->ct_item_ops = _item_ops; \ 680a06d430SChristoph Hellwig cit->ct_group_ops = _group_ops; \ 690a06d430SChristoph Hellwig cit->ct_attrs = tb->ops->tb_##_name##_attrs; \ 700a06d430SChristoph Hellwig cit->ct_owner = tb->ops->owner; \ 7173112edcSNicholas Bellinger pr_debug("Setup generic %s\n", __stringify(_name)); \ 7273112edcSNicholas Bellinger } 7373112edcSNicholas Bellinger 74e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 75e3d6f909SAndy Grover 76d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 77d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 78c66ac9dbSNicholas Bellinger 79e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 80e3d6f909SAndy Grover static struct config_group alua_group; 81e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 82e3d6f909SAndy Grover 83c66ac9dbSNicholas Bellinger static inline struct se_hba * 84c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 85c66ac9dbSNicholas Bellinger { 86c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 87c66ac9dbSNicholas Bellinger } 88c66ac9dbSNicholas Bellinger 89c66ac9dbSNicholas Bellinger /* 90c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 91c66ac9dbSNicholas Bellinger */ 922eafd729SChristoph Hellwig static ssize_t target_core_item_version_show(struct config_item *item, 93c66ac9dbSNicholas Bellinger char *page) 94c66ac9dbSNicholas Bellinger { 95c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 96ce8dd25dSChristoph Hellwig " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_VERSION, 97c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 98c66ac9dbSNicholas Bellinger } 99c66ac9dbSNicholas Bellinger 1002eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_core_item_, version); 101c66ac9dbSNicholas Bellinger 102a96e9783SLee Duncan char db_root[DB_ROOT_LEN] = DB_ROOT_DEFAULT; 103a96e9783SLee Duncan static char db_root_stage[DB_ROOT_LEN]; 104a96e9783SLee Duncan 105a96e9783SLee Duncan static ssize_t target_core_item_dbroot_show(struct config_item *item, 106a96e9783SLee Duncan char *page) 107a96e9783SLee Duncan { 108a96e9783SLee Duncan return sprintf(page, "%s\n", db_root); 109a96e9783SLee Duncan } 110a96e9783SLee Duncan 111a96e9783SLee Duncan static ssize_t target_core_item_dbroot_store(struct config_item *item, 112a96e9783SLee Duncan const char *page, size_t count) 113a96e9783SLee Duncan { 114a96e9783SLee Duncan ssize_t read_bytes; 115a96e9783SLee Duncan struct file *fp; 116a96e9783SLee Duncan 117a96e9783SLee Duncan mutex_lock(&g_tf_lock); 118a96e9783SLee Duncan if (!list_empty(&g_tf_list)) { 119a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 120a96e9783SLee Duncan pr_err("db_root: cannot be changed: target drivers registered"); 121a96e9783SLee Duncan return -EINVAL; 122a96e9783SLee Duncan } 123a96e9783SLee Duncan 124a96e9783SLee Duncan if (count > (DB_ROOT_LEN - 1)) { 125a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 126a96e9783SLee Duncan pr_err("db_root: count %d exceeds DB_ROOT_LEN-1: %u\n", 127a96e9783SLee Duncan (int)count, DB_ROOT_LEN - 1); 128a96e9783SLee Duncan return -EINVAL; 129a96e9783SLee Duncan } 130a96e9783SLee Duncan 131a96e9783SLee Duncan read_bytes = snprintf(db_root_stage, DB_ROOT_LEN, "%s", page); 132a96e9783SLee Duncan if (!read_bytes) { 133a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 134a96e9783SLee Duncan return -EINVAL; 135a96e9783SLee Duncan } 136a96e9783SLee Duncan if (db_root_stage[read_bytes - 1] == '\n') 137a96e9783SLee Duncan db_root_stage[read_bytes - 1] = '\0'; 138a96e9783SLee Duncan 139a96e9783SLee Duncan /* validate new db root before accepting it */ 140a96e9783SLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 141a96e9783SLee Duncan if (IS_ERR(fp)) { 142a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 143a96e9783SLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 144a96e9783SLee Duncan return -EINVAL; 145a96e9783SLee Duncan } 14645063097SAl Viro if (!S_ISDIR(file_inode(fp)->i_mode)) { 1478cc3bb07SBart Van Assche filp_close(fp, NULL); 148a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 149a96e9783SLee Duncan pr_err("db_root: not a directory: %s\n", db_root_stage); 150a96e9783SLee Duncan return -EINVAL; 151a96e9783SLee Duncan } 1528cc3bb07SBart Van Assche filp_close(fp, NULL); 153a96e9783SLee Duncan 154a96e9783SLee Duncan strncpy(db_root, db_root_stage, read_bytes); 155a96e9783SLee Duncan 156a96e9783SLee Duncan mutex_unlock(&g_tf_lock); 157a96e9783SLee Duncan 15878a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 15978a6295cSLee Duncan 160a96e9783SLee Duncan return read_bytes; 161a96e9783SLee Duncan } 162a96e9783SLee Duncan 163a96e9783SLee Duncan CONFIGFS_ATTR(target_core_item_, dbroot); 164a96e9783SLee Duncan 165c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 166c66ac9dbSNicholas Bellinger const char *name) 167c66ac9dbSNicholas Bellinger { 168c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 169c66ac9dbSNicholas Bellinger 1706708bb27SAndy Grover if (!name) 171c66ac9dbSNicholas Bellinger return NULL; 172c66ac9dbSNicholas Bellinger 173c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 174c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 17559a206b4SDavid Disseldorp const char *cmp_name = tf->tf_ops->fabric_alias; 17659a206b4SDavid Disseldorp if (!cmp_name) 17759a206b4SDavid Disseldorp cmp_name = tf->tf_ops->fabric_name; 17859a206b4SDavid Disseldorp if (!strcmp(cmp_name, name)) { 179c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 180c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 181c66ac9dbSNicholas Bellinger return tf; 182c66ac9dbSNicholas Bellinger } 183c66ac9dbSNicholas Bellinger } 184c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 185c66ac9dbSNicholas Bellinger 186c66ac9dbSNicholas Bellinger return NULL; 187c66ac9dbSNicholas Bellinger } 188c66ac9dbSNicholas Bellinger 189c66ac9dbSNicholas Bellinger /* 190c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 191c66ac9dbSNicholas Bellinger */ 192c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 193c66ac9dbSNicholas Bellinger struct config_group *group, 194c66ac9dbSNicholas Bellinger const char *name) 195c66ac9dbSNicholas Bellinger { 196c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 197c66ac9dbSNicholas Bellinger int ret; 198c66ac9dbSNicholas Bellinger 1996708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 200c66ac9dbSNicholas Bellinger " %s\n", group, name); 201e7b7af6eSRoland Dreier 202e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 203e7b7af6eSRoland Dreier if (!tf) { 20462554910SNicholas Bellinger pr_debug("target_core_register_fabric() trying autoload for %s\n", 205e7b7af6eSRoland Dreier name); 206e7b7af6eSRoland Dreier 207c66ac9dbSNicholas Bellinger /* 208c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 209c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 210c66ac9dbSNicholas Bellinger * 211c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 212c66ac9dbSNicholas Bellinger * 213c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 214c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 215c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 216c66ac9dbSNicholas Bellinger */ 217e7b7af6eSRoland Dreier 2186708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 219c66ac9dbSNicholas Bellinger /* 220c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 221c66ac9dbSNicholas Bellinger * following is called: 222c66ac9dbSNicholas Bellinger * 223c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 224c66ac9dbSNicholas Bellinger */ 225c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 226c66ac9dbSNicholas Bellinger if (ret < 0) { 22762554910SNicholas Bellinger pr_debug("request_module() failed for" 228c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 229c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 230c66ac9dbSNicholas Bellinger } 2316708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 232c66ac9dbSNicholas Bellinger /* 233c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 234c66ac9dbSNicholas Bellinger * following is called: 235c66ac9dbSNicholas Bellinger * 236c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 237c66ac9dbSNicholas Bellinger */ 238c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 239c66ac9dbSNicholas Bellinger if (ret < 0) { 24062554910SNicholas Bellinger pr_debug("request_module() failed for" 241c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 242c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 243c66ac9dbSNicholas Bellinger } 244c66ac9dbSNicholas Bellinger } 245c66ac9dbSNicholas Bellinger 246c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 247e7b7af6eSRoland Dreier } 248e7b7af6eSRoland Dreier 2496708bb27SAndy Grover if (!tf) { 25062554910SNicholas Bellinger pr_debug("target_core_get_fabric() failed for %s\n", 251c66ac9dbSNicholas Bellinger name); 252c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 253c66ac9dbSNicholas Bellinger } 2546708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 25559a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 256c66ac9dbSNicholas Bellinger /* 257c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 258c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 259c66ac9dbSNicholas Bellinger */ 2606708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 261968ebe75SChristoph Hellwig &tf->tf_wwn_cit); 262c66ac9dbSNicholas Bellinger 263968ebe75SChristoph Hellwig config_group_init_type_name(&tf->tf_group, name, &tf->tf_wwn_cit); 2641ae1602dSChristoph Hellwig 265c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 266968ebe75SChristoph Hellwig &tf->tf_discovery_cit); 2671ae1602dSChristoph Hellwig configfs_add_default_group(&tf->tf_disc_group, &tf->tf_group); 268c66ac9dbSNicholas Bellinger 2696f3bf5a2SBart Van Assche pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric: %s\n", 2706f3bf5a2SBart Van Assche config_item_name(&tf->tf_group.cg_item)); 271c66ac9dbSNicholas Bellinger return &tf->tf_group; 272c66ac9dbSNicholas Bellinger } 273c66ac9dbSNicholas Bellinger 274c66ac9dbSNicholas Bellinger /* 275c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 276c66ac9dbSNicholas Bellinger */ 277c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 278c66ac9dbSNicholas Bellinger struct config_group *group, 279c66ac9dbSNicholas Bellinger struct config_item *item) 280c66ac9dbSNicholas Bellinger { 281c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 282c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 283c66ac9dbSNicholas Bellinger 2846708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 285c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 286c66ac9dbSNicholas Bellinger 2876708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 28859a206b4SDavid Disseldorp " %s\n", tf->tf_ops->fabric_name); 289c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 290c66ac9dbSNicholas Bellinger 2916708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 292c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 293c66ac9dbSNicholas Bellinger 2941ae1602dSChristoph Hellwig configfs_remove_default_groups(&tf->tf_group); 295c66ac9dbSNicholas Bellinger config_item_put(item); 296c66ac9dbSNicholas Bellinger } 297c66ac9dbSNicholas Bellinger 298c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 299c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 300c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 301c66ac9dbSNicholas Bellinger }; 302c66ac9dbSNicholas Bellinger 303c66ac9dbSNicholas Bellinger /* 304c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 305c66ac9dbSNicholas Bellinger */ 306c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 307c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 308a96e9783SLee Duncan &target_core_item_attr_dbroot, 309c66ac9dbSNicholas Bellinger NULL, 310c66ac9dbSNicholas Bellinger }; 311c66ac9dbSNicholas Bellinger 312c66ac9dbSNicholas Bellinger /* 313c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 314c66ac9dbSNicholas Bellinger */ 315ece550b5SBhumika Goyal static const struct config_item_type target_core_fabrics_item = { 316c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 317c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 318c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 319c66ac9dbSNicholas Bellinger }; 320c66ac9dbSNicholas Bellinger 321c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 322c66ac9dbSNicholas Bellinger .su_group = { 323c66ac9dbSNicholas Bellinger .cg_item = { 324c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 325c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 326c66ac9dbSNicholas Bellinger }, 327c66ac9dbSNicholas Bellinger }, 328c66ac9dbSNicholas Bellinger }; 329c66ac9dbSNicholas Bellinger 330d588cf8fSChristoph Hellwig int target_depend_item(struct config_item *item) 331d588cf8fSChristoph Hellwig { 332d588cf8fSChristoph Hellwig return configfs_depend_item(&target_core_fabrics, item); 333d588cf8fSChristoph Hellwig } 334d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_depend_item); 335d588cf8fSChristoph Hellwig 336d588cf8fSChristoph Hellwig void target_undepend_item(struct config_item *item) 337d588cf8fSChristoph Hellwig { 3389a9e3415SKrzysztof Opasiak return configfs_undepend_item(item); 339d588cf8fSChristoph Hellwig } 340d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_undepend_item); 341c66ac9dbSNicholas Bellinger 342c66ac9dbSNicholas Bellinger /*############################################################################## 343c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 344c66ac9dbSNicholas Bellinger //############################################################################*/ 345c66ac9dbSNicholas Bellinger 3469ac8928eSChristoph Hellwig static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) 347c66ac9dbSNicholas Bellinger { 34859a206b4SDavid Disseldorp if (tfo->fabric_alias) { 34959a206b4SDavid Disseldorp if (strlen(tfo->fabric_alias) >= TARGET_FABRIC_NAME_SIZE) { 35059a206b4SDavid Disseldorp pr_err("Passed alias: %s exceeds " 35159a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_alias); 3529ac8928eSChristoph Hellwig return -EINVAL; 353c66ac9dbSNicholas Bellinger } 354c66ac9dbSNicholas Bellinger } 35530c7ca93SDavid Disseldorp if (!tfo->fabric_name) { 35630c7ca93SDavid Disseldorp pr_err("Missing tfo->fabric_name\n"); 357c66ac9dbSNicholas Bellinger return -EINVAL; 358c66ac9dbSNicholas Bellinger } 35959a206b4SDavid Disseldorp if (strlen(tfo->fabric_name) >= TARGET_FABRIC_NAME_SIZE) { 36059a206b4SDavid Disseldorp pr_err("Passed name: %s exceeds " 36159a206b4SDavid Disseldorp "TARGET_FABRIC_NAME_SIZE\n", tfo->fabric_name); 36259a206b4SDavid Disseldorp return -EINVAL; 36359a206b4SDavid Disseldorp } 3646708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3656708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 366c66ac9dbSNicholas Bellinger return -EINVAL; 367c66ac9dbSNicholas Bellinger } 3686708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3696708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 370c66ac9dbSNicholas Bellinger return -EINVAL; 371c66ac9dbSNicholas Bellinger } 3726708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 3736708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 374c66ac9dbSNicholas Bellinger return -EINVAL; 375c66ac9dbSNicholas Bellinger } 3766708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 3776708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 378c66ac9dbSNicholas Bellinger return -EINVAL; 379c66ac9dbSNicholas Bellinger } 3806708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 3816708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 382c66ac9dbSNicholas Bellinger return -EINVAL; 383c66ac9dbSNicholas Bellinger } 3846708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 3856708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 386c66ac9dbSNicholas Bellinger return -EINVAL; 387c66ac9dbSNicholas Bellinger } 3886708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 3896708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 390c66ac9dbSNicholas Bellinger return -EINVAL; 391c66ac9dbSNicholas Bellinger } 39235462975SChristoph Hellwig if (!tfo->release_cmd) { 3936708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 394c66ac9dbSNicholas Bellinger return -EINVAL; 395c66ac9dbSNicholas Bellinger } 3966708bb27SAndy Grover if (!tfo->sess_get_index) { 3976708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 398c66ac9dbSNicholas Bellinger return -EINVAL; 399c66ac9dbSNicholas Bellinger } 4006708bb27SAndy Grover if (!tfo->write_pending) { 4016708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 402c66ac9dbSNicholas Bellinger return -EINVAL; 403c66ac9dbSNicholas Bellinger } 4046708bb27SAndy Grover if (!tfo->write_pending_status) { 4056708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 406c66ac9dbSNicholas Bellinger return -EINVAL; 407c66ac9dbSNicholas Bellinger } 4086708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 4096708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 410c66ac9dbSNicholas Bellinger return -EINVAL; 411c66ac9dbSNicholas Bellinger } 4126708bb27SAndy Grover if (!tfo->get_cmd_state) { 4136708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 414c66ac9dbSNicholas Bellinger return -EINVAL; 415c66ac9dbSNicholas Bellinger } 4166708bb27SAndy Grover if (!tfo->queue_data_in) { 4176708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 418c66ac9dbSNicholas Bellinger return -EINVAL; 419c66ac9dbSNicholas Bellinger } 4206708bb27SAndy Grover if (!tfo->queue_status) { 4216708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 422c66ac9dbSNicholas Bellinger return -EINVAL; 423c66ac9dbSNicholas Bellinger } 4246708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 4256708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 426c66ac9dbSNicholas Bellinger return -EINVAL; 427c66ac9dbSNicholas Bellinger } 428131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 429131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 430131e6abcSNicholas Bellinger return -EINVAL; 431131e6abcSNicholas Bellinger } 4329c28ca4fSNicholas Bellinger if (!tfo->check_stop_free) { 4339c28ca4fSNicholas Bellinger pr_err("Missing tfo->check_stop_free()\n"); 4349c28ca4fSNicholas Bellinger return -EINVAL; 4359c28ca4fSNicholas Bellinger } 436c66ac9dbSNicholas Bellinger /* 437c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 438c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 439c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 440c66ac9dbSNicholas Bellinger */ 4416708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4426708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 443c66ac9dbSNicholas Bellinger return -EINVAL; 444c66ac9dbSNicholas Bellinger } 4456708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4466708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 447c66ac9dbSNicholas Bellinger return -EINVAL; 448c66ac9dbSNicholas Bellinger } 4496708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4506708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 451c66ac9dbSNicholas Bellinger return -EINVAL; 452c66ac9dbSNicholas Bellinger } 4536708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 4546708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 455c66ac9dbSNicholas Bellinger return -EINVAL; 456c66ac9dbSNicholas Bellinger } 457c66ac9dbSNicholas Bellinger 458c66ac9dbSNicholas Bellinger return 0; 459c66ac9dbSNicholas Bellinger } 460c66ac9dbSNicholas Bellinger 4619ac8928eSChristoph Hellwig int target_register_template(const struct target_core_fabric_ops *fo) 462c66ac9dbSNicholas Bellinger { 4639ac8928eSChristoph Hellwig struct target_fabric_configfs *tf; 464c66ac9dbSNicholas Bellinger int ret; 465c66ac9dbSNicholas Bellinger 4669ac8928eSChristoph Hellwig ret = target_fabric_tf_ops_check(fo); 4679ac8928eSChristoph Hellwig if (ret) 468c66ac9dbSNicholas Bellinger return ret; 469c66ac9dbSNicholas Bellinger 4709ac8928eSChristoph Hellwig tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 4719ac8928eSChristoph Hellwig if (!tf) { 4729ac8928eSChristoph Hellwig pr_err("%s: could not allocate memory!\n", __func__); 4739ac8928eSChristoph Hellwig return -ENOMEM; 4749ac8928eSChristoph Hellwig } 4759ac8928eSChristoph Hellwig 4769ac8928eSChristoph Hellwig INIT_LIST_HEAD(&tf->tf_list); 4779ac8928eSChristoph Hellwig atomic_set(&tf->tf_access_cnt, 0); 478ef0caf8dSChristoph Hellwig tf->tf_ops = fo; 4799ac8928eSChristoph Hellwig target_fabric_setup_cits(tf); 4809ac8928eSChristoph Hellwig 4819ac8928eSChristoph Hellwig mutex_lock(&g_tf_lock); 4829ac8928eSChristoph Hellwig list_add_tail(&tf->tf_list, &g_tf_list); 4839ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4849ac8928eSChristoph Hellwig 485c66ac9dbSNicholas Bellinger return 0; 486c66ac9dbSNicholas Bellinger } 4879ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_register_template); 488c66ac9dbSNicholas Bellinger 4899ac8928eSChristoph Hellwig void target_unregister_template(const struct target_core_fabric_ops *fo) 490c66ac9dbSNicholas Bellinger { 4919ac8928eSChristoph Hellwig struct target_fabric_configfs *t; 492c66ac9dbSNicholas Bellinger 493c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 4949ac8928eSChristoph Hellwig list_for_each_entry(t, &g_tf_list, tf_list) { 49559a206b4SDavid Disseldorp if (!strcmp(t->tf_ops->fabric_name, fo->fabric_name)) { 4969ac8928eSChristoph Hellwig BUG_ON(atomic_read(&t->tf_access_cnt)); 4979ac8928eSChristoph Hellwig list_del(&t->tf_list); 49894509182SNicholas Bellinger mutex_unlock(&g_tf_lock); 49994509182SNicholas Bellinger /* 50094509182SNicholas Bellinger * Wait for any outstanding fabric se_deve_entry->rcu_head 50194509182SNicholas Bellinger * callbacks to complete post kfree_rcu(), before allowing 50294509182SNicholas Bellinger * fabric driver unload of TFO->module to proceed. 50394509182SNicholas Bellinger */ 50494509182SNicholas Bellinger rcu_barrier(); 5059ac8928eSChristoph Hellwig kfree(t); 50694509182SNicholas Bellinger return; 507c66ac9dbSNicholas Bellinger } 508c66ac9dbSNicholas Bellinger } 5099ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 5109ac8928eSChristoph Hellwig } 5119ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_unregister_template); 512c66ac9dbSNicholas Bellinger 513c66ac9dbSNicholas Bellinger /*############################################################################## 514c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 515c66ac9dbSNicholas Bellinger //############################################################################*/ 516c66ac9dbSNicholas Bellinger 5172eafd729SChristoph Hellwig static inline struct se_dev_attrib *to_attrib(struct config_item *item) 5182eafd729SChristoph Hellwig { 5192eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_dev_attrib, 5202eafd729SChristoph Hellwig da_group); 5215873c4d1SChristoph Hellwig } 5225873c4d1SChristoph Hellwig 5232eafd729SChristoph Hellwig /* Start functions for struct config_item_type tb_dev_attrib_cit */ 5242eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_SHOW(_name) \ 5252eafd729SChristoph Hellwig static ssize_t _name##_show(struct config_item *item, char *page) \ 5262eafd729SChristoph Hellwig { \ 5272eafd729SChristoph Hellwig return snprintf(page, PAGE_SIZE, "%u\n", to_attrib(item)->_name); \ 5282eafd729SChristoph Hellwig } 5293effdb90SChristoph Hellwig 5302eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_model_alias); 5312eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_dpo); 5322eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_write); 5332eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_fua_read); 5342eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_write_cache); 5352eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_ua_intlck_ctrl); 5362eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tas); 5372eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpu); 5382eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_tpws); 5392eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_caw); 5402eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_3pc); 541b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_SHOW(emulate_pr); 5422eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_type); 5432eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_pi_prot_type); 544056e8924SDmitry Monakhov DEF_CONFIGFS_ATTRIB_SHOW(pi_prot_verify); 5452eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(enforce_pr_isids); 5462eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(is_nonrot); 5472eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(emulate_rest_reord); 5482eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(force_pr_aptpl); 5492eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_block_size); 5502eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(block_size); 5512eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_max_sectors); 5522eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(optimal_sectors); 5532eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(hw_queue_depth); 5542eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(queue_depth); 5552eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_lba_count); 5562eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_unmap_block_desc_count); 5572eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity); 5582eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(unmap_granularity_alignment); 559e6f41633SJamie Pocas DEF_CONFIGFS_ATTRIB_SHOW(unmap_zeroes_data); 5602eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_SHOW(max_write_same_len); 5612eafd729SChristoph Hellwig 5622eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_U32(_name) \ 5632eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 5645873c4d1SChristoph Hellwig size_t count) \ 5655873c4d1SChristoph Hellwig { \ 5662eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5673effdb90SChristoph Hellwig u32 val; \ 5685873c4d1SChristoph Hellwig int ret; \ 5695873c4d1SChristoph Hellwig \ 5703effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); \ 5713effdb90SChristoph Hellwig if (ret < 0) \ 5723effdb90SChristoph Hellwig return ret; \ 5733effdb90SChristoph Hellwig da->_name = val; \ 5743effdb90SChristoph Hellwig return count; \ 5755873c4d1SChristoph Hellwig } 5765873c4d1SChristoph Hellwig 5772eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_lba_count); 5782eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_unmap_block_desc_count); 5792eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity); 5802eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(unmap_granularity_alignment); 5812eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_U32(max_write_same_len); 5825873c4d1SChristoph Hellwig 5832eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_BOOL(_name) \ 5842eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page, \ 5853effdb90SChristoph Hellwig size_t count) \ 5863effdb90SChristoph Hellwig { \ 5872eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); \ 5883effdb90SChristoph Hellwig bool flag; \ 5893effdb90SChristoph Hellwig int ret; \ 5903effdb90SChristoph Hellwig \ 5913effdb90SChristoph Hellwig ret = strtobool(page, &flag); \ 5923effdb90SChristoph Hellwig if (ret < 0) \ 5933effdb90SChristoph Hellwig return ret; \ 5943effdb90SChristoph Hellwig da->_name = flag; \ 5953effdb90SChristoph Hellwig return count; \ 5963effdb90SChristoph Hellwig } 5973effdb90SChristoph Hellwig 5982eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_fua_write); 5992eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_caw); 6002eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_3pc); 601b49d6f78SDavid Disseldorp DEF_CONFIGFS_ATTRIB_STORE_BOOL(emulate_pr); 6022eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(enforce_pr_isids); 6032eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_BOOL(is_nonrot); 6043effdb90SChristoph Hellwig 6052eafd729SChristoph Hellwig #define DEF_CONFIGFS_ATTRIB_STORE_STUB(_name) \ 6062eafd729SChristoph Hellwig static ssize_t _name##_store(struct config_item *item, const char *page,\ 6073effdb90SChristoph Hellwig size_t count) \ 6083effdb90SChristoph Hellwig { \ 6093effdb90SChristoph Hellwig printk_once(KERN_WARNING \ 610234bdbc4SChristophe Vu-Brugier "ignoring deprecated %s attribute\n", \ 611234bdbc4SChristophe Vu-Brugier __stringify(_name)); \ 6123effdb90SChristoph Hellwig return count; \ 6133effdb90SChristoph Hellwig } 6143effdb90SChristoph Hellwig 6152eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_dpo); 6162eafd729SChristoph Hellwig DEF_CONFIGFS_ATTRIB_STORE_STUB(emulate_fua_read); 6173effdb90SChristoph Hellwig 6183effdb90SChristoph Hellwig static void dev_set_t10_wwn_model_alias(struct se_device *dev) 6193effdb90SChristoph Hellwig { 6203effdb90SChristoph Hellwig const char *configname; 6213effdb90SChristoph Hellwig 6223effdb90SChristoph Hellwig configname = config_item_name(&dev->dev_group.cg_item); 623b2da4abfSDavid Disseldorp if (strlen(configname) >= INQUIRY_MODEL_LEN) { 6243effdb90SChristoph Hellwig pr_warn("dev[%p]: Backstore name '%s' is too long for " 625b2da4abfSDavid Disseldorp "INQUIRY_MODEL, truncating to 15 characters\n", dev, 6263effdb90SChristoph Hellwig configname); 6273effdb90SChristoph Hellwig } 628b2da4abfSDavid Disseldorp /* 629b2da4abfSDavid Disseldorp * XXX We can't use sizeof(dev->t10_wwn.model) (INQUIRY_MODEL_LEN + 1) 630b2da4abfSDavid Disseldorp * here without potentially breaking existing setups, so continue to 631b2da4abfSDavid Disseldorp * truncate one byte shorter than what can be carried in INQUIRY. 632b2da4abfSDavid Disseldorp */ 633b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, configname, INQUIRY_MODEL_LEN); 6343effdb90SChristoph Hellwig } 6353effdb90SChristoph Hellwig 6362eafd729SChristoph Hellwig static ssize_t emulate_model_alias_store(struct config_item *item, 6373effdb90SChristoph Hellwig const char *page, size_t count) 6383effdb90SChristoph Hellwig { 6392eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6403effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 6413effdb90SChristoph Hellwig bool flag; 6423effdb90SChristoph Hellwig int ret; 6433effdb90SChristoph Hellwig 6443effdb90SChristoph Hellwig if (dev->export_count) { 6453effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change model alias" 6463effdb90SChristoph Hellwig " while export_count is %d\n", 6473effdb90SChristoph Hellwig dev, dev->export_count); 6483effdb90SChristoph Hellwig return -EINVAL; 6493effdb90SChristoph Hellwig } 6503effdb90SChristoph Hellwig 6513effdb90SChristoph Hellwig ret = strtobool(page, &flag); 6523effdb90SChristoph Hellwig if (ret < 0) 6533effdb90SChristoph Hellwig return ret; 6543effdb90SChristoph Hellwig 655b2da4abfSDavid Disseldorp BUILD_BUG_ON(sizeof(dev->t10_wwn.model) != INQUIRY_MODEL_LEN + 1); 6563effdb90SChristoph Hellwig if (flag) { 6573effdb90SChristoph Hellwig dev_set_t10_wwn_model_alias(dev); 6583effdb90SChristoph Hellwig } else { 659b2da4abfSDavid Disseldorp strlcpy(dev->t10_wwn.model, dev->transport->inquiry_prod, 660b2da4abfSDavid Disseldorp sizeof(dev->t10_wwn.model)); 6613effdb90SChristoph Hellwig } 6623effdb90SChristoph Hellwig da->emulate_model_alias = flag; 6633effdb90SChristoph Hellwig return count; 6643effdb90SChristoph Hellwig } 6653effdb90SChristoph Hellwig 6662eafd729SChristoph Hellwig static ssize_t emulate_write_cache_store(struct config_item *item, 6673effdb90SChristoph Hellwig const char *page, size_t count) 6683effdb90SChristoph Hellwig { 6692eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6703effdb90SChristoph Hellwig bool flag; 6713effdb90SChristoph Hellwig int ret; 6723effdb90SChristoph Hellwig 6733effdb90SChristoph Hellwig ret = strtobool(page, &flag); 6743effdb90SChristoph Hellwig if (ret < 0) 6753effdb90SChristoph Hellwig return ret; 6763effdb90SChristoph Hellwig 6773effdb90SChristoph Hellwig if (flag && da->da_dev->transport->get_write_cache) { 6783effdb90SChristoph Hellwig pr_err("emulate_write_cache not supported for this device\n"); 6793effdb90SChristoph Hellwig return -EINVAL; 6803effdb90SChristoph Hellwig } 6813effdb90SChristoph Hellwig 6823effdb90SChristoph Hellwig da->emulate_write_cache = flag; 6833effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device WRITE_CACHE_EMULATION flag: %d\n", 6843effdb90SChristoph Hellwig da->da_dev, flag); 6853effdb90SChristoph Hellwig return count; 6863effdb90SChristoph Hellwig } 6873effdb90SChristoph Hellwig 6882eafd729SChristoph Hellwig static ssize_t emulate_ua_intlck_ctrl_store(struct config_item *item, 6893effdb90SChristoph Hellwig const char *page, size_t count) 6903effdb90SChristoph Hellwig { 6912eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 6923effdb90SChristoph Hellwig u32 val; 6933effdb90SChristoph Hellwig int ret; 6943effdb90SChristoph Hellwig 6953effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 6963effdb90SChristoph Hellwig if (ret < 0) 6973effdb90SChristoph Hellwig return ret; 6983effdb90SChristoph Hellwig 6993effdb90SChristoph Hellwig if (val != 0 && val != 1 && val != 2) { 7003effdb90SChristoph Hellwig pr_err("Illegal value %d\n", val); 7013effdb90SChristoph Hellwig return -EINVAL; 7023effdb90SChristoph Hellwig } 7033effdb90SChristoph Hellwig 7043effdb90SChristoph Hellwig if (da->da_dev->export_count) { 7053effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 7063effdb90SChristoph Hellwig " UA_INTRLCK_CTRL while export_count is %d\n", 7073effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 7083effdb90SChristoph Hellwig return -EINVAL; 7093effdb90SChristoph Hellwig } 7103effdb90SChristoph Hellwig da->emulate_ua_intlck_ctrl = val; 7113effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device UA_INTRLCK_CTRL flag: %d\n", 7123effdb90SChristoph Hellwig da->da_dev, val); 7133effdb90SChristoph Hellwig return count; 7143effdb90SChristoph Hellwig } 7153effdb90SChristoph Hellwig 7162eafd729SChristoph Hellwig static ssize_t emulate_tas_store(struct config_item *item, 7173effdb90SChristoph Hellwig const char *page, size_t count) 7183effdb90SChristoph Hellwig { 7192eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7203effdb90SChristoph Hellwig bool flag; 7213effdb90SChristoph Hellwig int ret; 7223effdb90SChristoph Hellwig 7233effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7243effdb90SChristoph Hellwig if (ret < 0) 7253effdb90SChristoph Hellwig return ret; 7263effdb90SChristoph Hellwig 7273effdb90SChristoph Hellwig if (da->da_dev->export_count) { 7283effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TAS while" 7293effdb90SChristoph Hellwig " export_count is %d\n", 7303effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 7313effdb90SChristoph Hellwig return -EINVAL; 7323effdb90SChristoph Hellwig } 7333effdb90SChristoph Hellwig da->emulate_tas = flag; 7343effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TASK_ABORTED status bit: %s\n", 7353effdb90SChristoph Hellwig da->da_dev, flag ? "Enabled" : "Disabled"); 7363effdb90SChristoph Hellwig 7373effdb90SChristoph Hellwig return count; 7383effdb90SChristoph Hellwig } 7393effdb90SChristoph Hellwig 7402eafd729SChristoph Hellwig static ssize_t emulate_tpu_store(struct config_item *item, 7413effdb90SChristoph Hellwig const char *page, size_t count) 7423effdb90SChristoph Hellwig { 7432eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7443effdb90SChristoph Hellwig bool flag; 7453effdb90SChristoph Hellwig int ret; 7463effdb90SChristoph Hellwig 7473effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7483effdb90SChristoph Hellwig if (ret < 0) 7493effdb90SChristoph Hellwig return ret; 7503effdb90SChristoph Hellwig 7513effdb90SChristoph Hellwig /* 7523effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7533effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7543effdb90SChristoph Hellwig */ 7553effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 7563effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7573effdb90SChristoph Hellwig return -ENOSYS; 7583effdb90SChristoph Hellwig } 7593effdb90SChristoph Hellwig 7603effdb90SChristoph Hellwig da->emulate_tpu = flag; 7613effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning UNMAP bit: %d\n", 7623effdb90SChristoph Hellwig da->da_dev, flag); 7633effdb90SChristoph Hellwig return count; 7643effdb90SChristoph Hellwig } 7653effdb90SChristoph Hellwig 7662eafd729SChristoph Hellwig static ssize_t emulate_tpws_store(struct config_item *item, 7673effdb90SChristoph Hellwig const char *page, size_t count) 7683effdb90SChristoph Hellwig { 7692eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7703effdb90SChristoph Hellwig bool flag; 7713effdb90SChristoph Hellwig int ret; 7723effdb90SChristoph Hellwig 7733effdb90SChristoph Hellwig ret = strtobool(page, &flag); 7743effdb90SChristoph Hellwig if (ret < 0) 7753effdb90SChristoph Hellwig return ret; 7763effdb90SChristoph Hellwig 7773effdb90SChristoph Hellwig /* 7783effdb90SChristoph Hellwig * We expect this value to be non-zero when generic Block Layer 7793effdb90SChristoph Hellwig * Discard supported is detected iblock_create_virtdevice(). 7803effdb90SChristoph Hellwig */ 7813effdb90SChristoph Hellwig if (flag && !da->max_unmap_block_desc_count) { 7823effdb90SChristoph Hellwig pr_err("Generic Block Discard not supported\n"); 7833effdb90SChristoph Hellwig return -ENOSYS; 7843effdb90SChristoph Hellwig } 7853effdb90SChristoph Hellwig 7863effdb90SChristoph Hellwig da->emulate_tpws = flag; 7873effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Thin Provisioning WRITE_SAME: %d\n", 7883effdb90SChristoph Hellwig da->da_dev, flag); 7893effdb90SChristoph Hellwig return count; 7903effdb90SChristoph Hellwig } 7913effdb90SChristoph Hellwig 7922eafd729SChristoph Hellwig static ssize_t pi_prot_type_store(struct config_item *item, 7933effdb90SChristoph Hellwig const char *page, size_t count) 7943effdb90SChristoph Hellwig { 7952eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 7963effdb90SChristoph Hellwig int old_prot = da->pi_prot_type, ret; 7973effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 7983effdb90SChristoph Hellwig u32 flag; 7993effdb90SChristoph Hellwig 8003effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &flag); 8013effdb90SChristoph Hellwig if (ret < 0) 8023effdb90SChristoph Hellwig return ret; 8033effdb90SChristoph Hellwig 8043effdb90SChristoph Hellwig if (flag != 0 && flag != 1 && flag != 2 && flag != 3) { 8053effdb90SChristoph Hellwig pr_err("Illegal value %d for pi_prot_type\n", flag); 8063effdb90SChristoph Hellwig return -EINVAL; 8073effdb90SChristoph Hellwig } 8083effdb90SChristoph Hellwig if (flag == 2) { 8093effdb90SChristoph Hellwig pr_err("DIF TYPE2 protection currently not supported\n"); 8103effdb90SChristoph Hellwig return -ENOSYS; 8113effdb90SChristoph Hellwig } 8123effdb90SChristoph Hellwig if (da->hw_pi_prot_type) { 8133effdb90SChristoph Hellwig pr_warn("DIF protection enabled on underlying hardware," 8143effdb90SChristoph Hellwig " ignoring\n"); 8153effdb90SChristoph Hellwig return count; 8163effdb90SChristoph Hellwig } 8173effdb90SChristoph Hellwig if (!dev->transport->init_prot || !dev->transport->free_prot) { 8183effdb90SChristoph Hellwig /* 0 is only allowed value for non-supporting backends */ 8193effdb90SChristoph Hellwig if (flag == 0) 820bc1a7d6aSAndy Grover return count; 8213effdb90SChristoph Hellwig 8223effdb90SChristoph Hellwig pr_err("DIF protection not supported by backend: %s\n", 8233effdb90SChristoph Hellwig dev->transport->name); 8243effdb90SChristoph Hellwig return -ENOSYS; 8253effdb90SChristoph Hellwig } 826cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8273effdb90SChristoph Hellwig pr_err("DIF protection requires device to be configured\n"); 8283effdb90SChristoph Hellwig return -ENODEV; 8293effdb90SChristoph Hellwig } 8303effdb90SChristoph Hellwig if (dev->export_count) { 8313effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device PROT type while" 8323effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8333effdb90SChristoph Hellwig return -EINVAL; 8343effdb90SChristoph Hellwig } 8353effdb90SChristoph Hellwig 8363effdb90SChristoph Hellwig da->pi_prot_type = flag; 8373effdb90SChristoph Hellwig 8383effdb90SChristoph Hellwig if (flag && !old_prot) { 8393effdb90SChristoph Hellwig ret = dev->transport->init_prot(dev); 8403effdb90SChristoph Hellwig if (ret) { 8413effdb90SChristoph Hellwig da->pi_prot_type = old_prot; 842056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8433effdb90SChristoph Hellwig return ret; 8443effdb90SChristoph Hellwig } 8453effdb90SChristoph Hellwig 8463effdb90SChristoph Hellwig } else if (!flag && old_prot) { 8473effdb90SChristoph Hellwig dev->transport->free_prot(dev); 8483effdb90SChristoph Hellwig } 8493effdb90SChristoph Hellwig 850056e8924SDmitry Monakhov da->pi_prot_verify = (bool) da->pi_prot_type; 8513effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Type: %d\n", dev, flag); 8523effdb90SChristoph Hellwig return count; 8533effdb90SChristoph Hellwig } 8543effdb90SChristoph Hellwig 8552eafd729SChristoph Hellwig static ssize_t pi_prot_format_store(struct config_item *item, 8563effdb90SChristoph Hellwig const char *page, size_t count) 8573effdb90SChristoph Hellwig { 8582eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 8593effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 8603effdb90SChristoph Hellwig bool flag; 8613effdb90SChristoph Hellwig int ret; 8623effdb90SChristoph Hellwig 8633effdb90SChristoph Hellwig ret = strtobool(page, &flag); 8643effdb90SChristoph Hellwig if (ret < 0) 8653effdb90SChristoph Hellwig return ret; 8663effdb90SChristoph Hellwig 8673effdb90SChristoph Hellwig if (!flag) 8683effdb90SChristoph Hellwig return count; 8693effdb90SChristoph Hellwig 8703effdb90SChristoph Hellwig if (!dev->transport->format_prot) { 8713effdb90SChristoph Hellwig pr_err("DIF protection format not supported by backend %s\n", 8723effdb90SChristoph Hellwig dev->transport->name); 8733effdb90SChristoph Hellwig return -ENOSYS; 8743effdb90SChristoph Hellwig } 875cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 8763effdb90SChristoph Hellwig pr_err("DIF protection format requires device to be configured\n"); 8773effdb90SChristoph Hellwig return -ENODEV; 8783effdb90SChristoph Hellwig } 8793effdb90SChristoph Hellwig if (dev->export_count) { 8803effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to format SE Device PROT type while" 8813effdb90SChristoph Hellwig " export_count is %d\n", dev, dev->export_count); 8823effdb90SChristoph Hellwig return -EINVAL; 8833effdb90SChristoph Hellwig } 8843effdb90SChristoph Hellwig 8853effdb90SChristoph Hellwig ret = dev->transport->format_prot(dev); 8863effdb90SChristoph Hellwig if (ret) 8873effdb90SChristoph Hellwig return ret; 8883effdb90SChristoph Hellwig 8893effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device Protection Format complete\n", dev); 8903effdb90SChristoph Hellwig return count; 8913effdb90SChristoph Hellwig } 8923effdb90SChristoph Hellwig 893056e8924SDmitry Monakhov static ssize_t pi_prot_verify_store(struct config_item *item, 894056e8924SDmitry Monakhov const char *page, size_t count) 895056e8924SDmitry Monakhov { 896056e8924SDmitry Monakhov struct se_dev_attrib *da = to_attrib(item); 897056e8924SDmitry Monakhov bool flag; 898056e8924SDmitry Monakhov int ret; 899056e8924SDmitry Monakhov 900056e8924SDmitry Monakhov ret = strtobool(page, &flag); 901056e8924SDmitry Monakhov if (ret < 0) 902056e8924SDmitry Monakhov return ret; 903056e8924SDmitry Monakhov 904056e8924SDmitry Monakhov if (!flag) { 905056e8924SDmitry Monakhov da->pi_prot_verify = flag; 906056e8924SDmitry Monakhov return count; 907056e8924SDmitry Monakhov } 908056e8924SDmitry Monakhov if (da->hw_pi_prot_type) { 909056e8924SDmitry Monakhov pr_warn("DIF protection enabled on underlying hardware," 910056e8924SDmitry Monakhov " ignoring\n"); 911056e8924SDmitry Monakhov return count; 912056e8924SDmitry Monakhov } 913056e8924SDmitry Monakhov if (!da->pi_prot_type) { 914056e8924SDmitry Monakhov pr_warn("DIF protection not supported by backend, ignoring\n"); 915056e8924SDmitry Monakhov return count; 916056e8924SDmitry Monakhov } 917056e8924SDmitry Monakhov da->pi_prot_verify = flag; 918056e8924SDmitry Monakhov 919056e8924SDmitry Monakhov return count; 920056e8924SDmitry Monakhov } 921056e8924SDmitry Monakhov 9222eafd729SChristoph Hellwig static ssize_t force_pr_aptpl_store(struct config_item *item, 9233effdb90SChristoph Hellwig const char *page, size_t count) 9243effdb90SChristoph Hellwig { 9252eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9263effdb90SChristoph Hellwig bool flag; 9273effdb90SChristoph Hellwig int ret; 9283effdb90SChristoph Hellwig 9293effdb90SChristoph Hellwig ret = strtobool(page, &flag); 9303effdb90SChristoph Hellwig if (ret < 0) 9313effdb90SChristoph Hellwig return ret; 9323effdb90SChristoph Hellwig if (da->da_dev->export_count) { 9333effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to set force_pr_aptpl while" 9343effdb90SChristoph Hellwig " export_count is %d\n", 9353effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 9363effdb90SChristoph Hellwig return -EINVAL; 9373effdb90SChristoph Hellwig } 9383effdb90SChristoph Hellwig 9393effdb90SChristoph Hellwig da->force_pr_aptpl = flag; 9403effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device force_pr_aptpl: %d\n", da->da_dev, flag); 9413effdb90SChristoph Hellwig return count; 9423effdb90SChristoph Hellwig } 9433effdb90SChristoph Hellwig 9442eafd729SChristoph Hellwig static ssize_t emulate_rest_reord_store(struct config_item *item, 9453effdb90SChristoph Hellwig const char *page, size_t count) 9463effdb90SChristoph Hellwig { 9472eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 9483effdb90SChristoph Hellwig bool flag; 9493effdb90SChristoph Hellwig int ret; 9503effdb90SChristoph Hellwig 9513effdb90SChristoph Hellwig ret = strtobool(page, &flag); 9523effdb90SChristoph Hellwig if (ret < 0) 9533effdb90SChristoph Hellwig return ret; 9543effdb90SChristoph Hellwig 9553effdb90SChristoph Hellwig if (flag != 0) { 9563effdb90SChristoph Hellwig printk(KERN_ERR "dev[%p]: SE Device emulation of restricted" 9573effdb90SChristoph Hellwig " reordering not implemented\n", da->da_dev); 9583effdb90SChristoph Hellwig return -ENOSYS; 9593effdb90SChristoph Hellwig } 9603effdb90SChristoph Hellwig da->emulate_rest_reord = flag; 9613effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device emulate_rest_reord: %d\n", 9623effdb90SChristoph Hellwig da->da_dev, flag); 9633effdb90SChristoph Hellwig return count; 9643effdb90SChristoph Hellwig } 9653effdb90SChristoph Hellwig 966e6f41633SJamie Pocas static ssize_t unmap_zeroes_data_store(struct config_item *item, 967e6f41633SJamie Pocas const char *page, size_t count) 968e6f41633SJamie Pocas { 969e6f41633SJamie Pocas struct se_dev_attrib *da = to_attrib(item); 970e6f41633SJamie Pocas bool flag; 971e6f41633SJamie Pocas int ret; 972e6f41633SJamie Pocas 973e6f41633SJamie Pocas ret = strtobool(page, &flag); 974e6f41633SJamie Pocas if (ret < 0) 975e6f41633SJamie Pocas return ret; 976e6f41633SJamie Pocas 977e6f41633SJamie Pocas if (da->da_dev->export_count) { 978e6f41633SJamie Pocas pr_err("dev[%p]: Unable to change SE Device" 979e6f41633SJamie Pocas " unmap_zeroes_data while export_count is %d\n", 980e6f41633SJamie Pocas da->da_dev, da->da_dev->export_count); 981e6f41633SJamie Pocas return -EINVAL; 982e6f41633SJamie Pocas } 983e6f41633SJamie Pocas /* 984e6f41633SJamie Pocas * We expect this value to be non-zero when generic Block Layer 985e6f41633SJamie Pocas * Discard supported is detected iblock_configure_device(). 986e6f41633SJamie Pocas */ 987e6f41633SJamie Pocas if (flag && !da->max_unmap_block_desc_count) { 988e6f41633SJamie Pocas pr_err("dev[%p]: Thin Provisioning LBPRZ will not be set" 989e6f41633SJamie Pocas " because max_unmap_block_desc_count is zero\n", 990e6f41633SJamie Pocas da->da_dev); 991e6f41633SJamie Pocas return -ENOSYS; 992e6f41633SJamie Pocas } 993e6f41633SJamie Pocas da->unmap_zeroes_data = flag; 994e6f41633SJamie Pocas pr_debug("dev[%p]: SE Device Thin Provisioning LBPRZ bit: %d\n", 995e6f41633SJamie Pocas da->da_dev, flag); 9962e498f25SNicholas Bellinger return count; 997e6f41633SJamie Pocas } 998e6f41633SJamie Pocas 9993effdb90SChristoph Hellwig /* 10003effdb90SChristoph Hellwig * Note, this can only be called on unexported SE Device Object. 10013effdb90SChristoph Hellwig */ 10022eafd729SChristoph Hellwig static ssize_t queue_depth_store(struct config_item *item, 10033effdb90SChristoph Hellwig const char *page, size_t count) 10043effdb90SChristoph Hellwig { 10052eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10063effdb90SChristoph Hellwig struct se_device *dev = da->da_dev; 10073effdb90SChristoph Hellwig u32 val; 10083effdb90SChristoph Hellwig int ret; 10093effdb90SChristoph Hellwig 10103effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10113effdb90SChristoph Hellwig if (ret < 0) 10123effdb90SChristoph Hellwig return ret; 10133effdb90SChristoph Hellwig 10143effdb90SChristoph Hellwig if (dev->export_count) { 10153effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device TCQ while" 10163effdb90SChristoph Hellwig " export_count is %d\n", 10173effdb90SChristoph Hellwig dev, dev->export_count); 10183effdb90SChristoph Hellwig return -EINVAL; 10193effdb90SChristoph Hellwig } 10203effdb90SChristoph Hellwig if (!val) { 10213effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal ZERO value for queue_depth\n", dev); 10223effdb90SChristoph Hellwig return -EINVAL; 10233effdb90SChristoph Hellwig } 10243effdb90SChristoph Hellwig 10253effdb90SChristoph Hellwig if (val > dev->dev_attrib.queue_depth) { 10263effdb90SChristoph Hellwig if (val > dev->dev_attrib.hw_queue_depth) { 10273effdb90SChristoph Hellwig pr_err("dev[%p]: Passed queue_depth:" 10283effdb90SChristoph Hellwig " %u exceeds TCM/SE_Device MAX" 10293effdb90SChristoph Hellwig " TCQ: %u\n", dev, val, 10303effdb90SChristoph Hellwig dev->dev_attrib.hw_queue_depth); 10313effdb90SChristoph Hellwig return -EINVAL; 10323effdb90SChristoph Hellwig } 10333effdb90SChristoph Hellwig } 10343effdb90SChristoph Hellwig da->queue_depth = dev->queue_depth = val; 10353effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device TCQ Depth changed to: %u\n", dev, val); 10363effdb90SChristoph Hellwig return count; 10373effdb90SChristoph Hellwig } 10383effdb90SChristoph Hellwig 10392eafd729SChristoph Hellwig static ssize_t optimal_sectors_store(struct config_item *item, 10403effdb90SChristoph Hellwig const char *page, size_t count) 10413effdb90SChristoph Hellwig { 10422eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10433effdb90SChristoph Hellwig u32 val; 10443effdb90SChristoph Hellwig int ret; 10453effdb90SChristoph Hellwig 10463effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10473effdb90SChristoph Hellwig if (ret < 0) 10483effdb90SChristoph Hellwig return ret; 10493effdb90SChristoph Hellwig 10503effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10513effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device" 10523effdb90SChristoph Hellwig " optimal_sectors while export_count is %d\n", 10533effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10543effdb90SChristoph Hellwig return -EINVAL; 10553effdb90SChristoph Hellwig } 10563effdb90SChristoph Hellwig if (val > da->hw_max_sectors) { 10573effdb90SChristoph Hellwig pr_err("dev[%p]: Passed optimal_sectors %u cannot be" 10583effdb90SChristoph Hellwig " greater than hw_max_sectors: %u\n", 10593effdb90SChristoph Hellwig da->da_dev, val, da->hw_max_sectors); 10603effdb90SChristoph Hellwig return -EINVAL; 10613effdb90SChristoph Hellwig } 10623effdb90SChristoph Hellwig 10633effdb90SChristoph Hellwig da->optimal_sectors = val; 10643effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device optimal_sectors changed to %u\n", 10653effdb90SChristoph Hellwig da->da_dev, val); 10663effdb90SChristoph Hellwig return count; 10673effdb90SChristoph Hellwig } 10683effdb90SChristoph Hellwig 10692eafd729SChristoph Hellwig static ssize_t block_size_store(struct config_item *item, 10703effdb90SChristoph Hellwig const char *page, size_t count) 10713effdb90SChristoph Hellwig { 10722eafd729SChristoph Hellwig struct se_dev_attrib *da = to_attrib(item); 10733effdb90SChristoph Hellwig u32 val; 10743effdb90SChristoph Hellwig int ret; 10753effdb90SChristoph Hellwig 10763effdb90SChristoph Hellwig ret = kstrtou32(page, 0, &val); 10773effdb90SChristoph Hellwig if (ret < 0) 10783effdb90SChristoph Hellwig return ret; 10793effdb90SChristoph Hellwig 10803effdb90SChristoph Hellwig if (da->da_dev->export_count) { 10813effdb90SChristoph Hellwig pr_err("dev[%p]: Unable to change SE Device block_size" 10823effdb90SChristoph Hellwig " while export_count is %d\n", 10833effdb90SChristoph Hellwig da->da_dev, da->da_dev->export_count); 10843effdb90SChristoph Hellwig return -EINVAL; 10853effdb90SChristoph Hellwig } 10863effdb90SChristoph Hellwig 10873effdb90SChristoph Hellwig if (val != 512 && val != 1024 && val != 2048 && val != 4096) { 10883effdb90SChristoph Hellwig pr_err("dev[%p]: Illegal value for block_device: %u" 10893effdb90SChristoph Hellwig " for SE device, must be 512, 1024, 2048 or 4096\n", 10903effdb90SChristoph Hellwig da->da_dev, val); 10913effdb90SChristoph Hellwig return -EINVAL; 10923effdb90SChristoph Hellwig } 10933effdb90SChristoph Hellwig 10943effdb90SChristoph Hellwig da->block_size = val; 10953effdb90SChristoph Hellwig if (da->max_bytes_per_io) 10963effdb90SChristoph Hellwig da->hw_max_sectors = da->max_bytes_per_io / val; 10973effdb90SChristoph Hellwig 10983effdb90SChristoph Hellwig pr_debug("dev[%p]: SE Device block_size changed to %u\n", 10993effdb90SChristoph Hellwig da->da_dev, val); 11003effdb90SChristoph Hellwig return count; 11013effdb90SChristoph Hellwig } 11025873c4d1SChristoph Hellwig 1103c17d5d5fSMike Christie static ssize_t alua_support_show(struct config_item *item, char *page) 1104c17d5d5fSMike Christie { 1105c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 1106c17d5d5fSMike Christie u8 flags = da->da_dev->transport->transport_flags; 1107c17d5d5fSMike Christie 1108c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1109c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_ALUA ? 0 : 1); 1110c17d5d5fSMike Christie } 1111c17d5d5fSMike Christie 1112c17d5d5fSMike Christie static ssize_t pgr_support_show(struct config_item *item, char *page) 1113c17d5d5fSMike Christie { 1114c17d5d5fSMike Christie struct se_dev_attrib *da = to_attrib(item); 1115c17d5d5fSMike Christie u8 flags = da->da_dev->transport->transport_flags; 1116c17d5d5fSMike Christie 1117c17d5d5fSMike Christie return snprintf(page, PAGE_SIZE, "%d\n", 1118c17d5d5fSMike Christie flags & TRANSPORT_FLAG_PASSTHROUGH_PGR ? 0 : 1); 1119c17d5d5fSMike Christie } 1120c17d5d5fSMike Christie 11212eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_model_alias); 11222eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_dpo); 11232eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_write); 11242eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_fua_read); 11252eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_write_cache); 11262eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_ua_intlck_ctrl); 11272eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tas); 11282eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpu); 11292eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_tpws); 11302eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_caw); 11312eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_3pc); 1132b49d6f78SDavid Disseldorp CONFIGFS_ATTR(, emulate_pr); 11332eafd729SChristoph Hellwig CONFIGFS_ATTR(, pi_prot_type); 11342eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_pi_prot_type); 11356baca760SDavid Disseldorp CONFIGFS_ATTR_WO(, pi_prot_format); 1136056e8924SDmitry Monakhov CONFIGFS_ATTR(, pi_prot_verify); 11372eafd729SChristoph Hellwig CONFIGFS_ATTR(, enforce_pr_isids); 11382eafd729SChristoph Hellwig CONFIGFS_ATTR(, is_nonrot); 11392eafd729SChristoph Hellwig CONFIGFS_ATTR(, emulate_rest_reord); 11402eafd729SChristoph Hellwig CONFIGFS_ATTR(, force_pr_aptpl); 11412eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_block_size); 11422eafd729SChristoph Hellwig CONFIGFS_ATTR(, block_size); 11432eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_max_sectors); 11442eafd729SChristoph Hellwig CONFIGFS_ATTR(, optimal_sectors); 11452eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(, hw_queue_depth); 11462eafd729SChristoph Hellwig CONFIGFS_ATTR(, queue_depth); 11472eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_lba_count); 11482eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_unmap_block_desc_count); 11492eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity); 11502eafd729SChristoph Hellwig CONFIGFS_ATTR(, unmap_granularity_alignment); 1151e6f41633SJamie Pocas CONFIGFS_ATTR(, unmap_zeroes_data); 11522eafd729SChristoph Hellwig CONFIGFS_ATTR(, max_write_same_len); 1153c17d5d5fSMike Christie CONFIGFS_ATTR_RO(, alua_support); 1154c17d5d5fSMike Christie CONFIGFS_ATTR_RO(, pgr_support); 1155c66ac9dbSNicholas Bellinger 11565873c4d1SChristoph Hellwig /* 11575873c4d1SChristoph Hellwig * dev_attrib attributes for devices using the target core SBC/SPC 11585873c4d1SChristoph Hellwig * interpreter. Any backend using spc_parse_cdb should be using 11595873c4d1SChristoph Hellwig * these. 11605873c4d1SChristoph Hellwig */ 11615873c4d1SChristoph Hellwig struct configfs_attribute *sbc_attrib_attrs[] = { 11622eafd729SChristoph Hellwig &attr_emulate_model_alias, 11632eafd729SChristoph Hellwig &attr_emulate_dpo, 11642eafd729SChristoph Hellwig &attr_emulate_fua_write, 11652eafd729SChristoph Hellwig &attr_emulate_fua_read, 11662eafd729SChristoph Hellwig &attr_emulate_write_cache, 11672eafd729SChristoph Hellwig &attr_emulate_ua_intlck_ctrl, 11682eafd729SChristoph Hellwig &attr_emulate_tas, 11692eafd729SChristoph Hellwig &attr_emulate_tpu, 11702eafd729SChristoph Hellwig &attr_emulate_tpws, 11712eafd729SChristoph Hellwig &attr_emulate_caw, 11722eafd729SChristoph Hellwig &attr_emulate_3pc, 1173b49d6f78SDavid Disseldorp &attr_emulate_pr, 11742eafd729SChristoph Hellwig &attr_pi_prot_type, 11752eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 11762eafd729SChristoph Hellwig &attr_pi_prot_format, 1177056e8924SDmitry Monakhov &attr_pi_prot_verify, 11782eafd729SChristoph Hellwig &attr_enforce_pr_isids, 11792eafd729SChristoph Hellwig &attr_is_nonrot, 11802eafd729SChristoph Hellwig &attr_emulate_rest_reord, 11812eafd729SChristoph Hellwig &attr_force_pr_aptpl, 11822eafd729SChristoph Hellwig &attr_hw_block_size, 11832eafd729SChristoph Hellwig &attr_block_size, 11842eafd729SChristoph Hellwig &attr_hw_max_sectors, 11852eafd729SChristoph Hellwig &attr_optimal_sectors, 11862eafd729SChristoph Hellwig &attr_hw_queue_depth, 11872eafd729SChristoph Hellwig &attr_queue_depth, 11882eafd729SChristoph Hellwig &attr_max_unmap_lba_count, 11892eafd729SChristoph Hellwig &attr_max_unmap_block_desc_count, 11902eafd729SChristoph Hellwig &attr_unmap_granularity, 11912eafd729SChristoph Hellwig &attr_unmap_granularity_alignment, 1192e6f41633SJamie Pocas &attr_unmap_zeroes_data, 11932eafd729SChristoph Hellwig &attr_max_write_same_len, 1194c17d5d5fSMike Christie &attr_alua_support, 1195c17d5d5fSMike Christie &attr_pgr_support, 11965873c4d1SChristoph Hellwig NULL, 11975873c4d1SChristoph Hellwig }; 11985873c4d1SChristoph Hellwig EXPORT_SYMBOL(sbc_attrib_attrs); 11995873c4d1SChristoph Hellwig 12005873c4d1SChristoph Hellwig /* 12015873c4d1SChristoph Hellwig * Minimal dev_attrib attributes for devices passing through CDBs. 12025873c4d1SChristoph Hellwig * In this case we only provide a few read-only attributes for 12035873c4d1SChristoph Hellwig * backwards compatibility. 12045873c4d1SChristoph Hellwig */ 12055873c4d1SChristoph Hellwig struct configfs_attribute *passthrough_attrib_attrs[] = { 12062eafd729SChristoph Hellwig &attr_hw_pi_prot_type, 12072eafd729SChristoph Hellwig &attr_hw_block_size, 12082eafd729SChristoph Hellwig &attr_hw_max_sectors, 12092eafd729SChristoph Hellwig &attr_hw_queue_depth, 1210c17d5d5fSMike Christie &attr_alua_support, 1211c17d5d5fSMike Christie &attr_pgr_support, 12125873c4d1SChristoph Hellwig NULL, 12135873c4d1SChristoph Hellwig }; 12145873c4d1SChristoph Hellwig EXPORT_SYMBOL(passthrough_attrib_attrs); 12155873c4d1SChristoph Hellwig 12162eafd729SChristoph Hellwig TB_CIT_SETUP_DRV(dev_attrib, NULL, NULL); 12178dc31ff9SMike Christie TB_CIT_SETUP_DRV(dev_action, NULL, NULL); 1218c66ac9dbSNicholas Bellinger 1219f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 1220c66ac9dbSNicholas Bellinger 1221f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 1222c66ac9dbSNicholas Bellinger 12232eafd729SChristoph Hellwig static struct t10_wwn *to_t10_wwn(struct config_item *item) 12242eafd729SChristoph Hellwig { 12252eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_wwn, t10_wwn_group); 12262eafd729SChristoph Hellwig } 1227c66ac9dbSNicholas Bellinger 1228c66ac9dbSNicholas Bellinger /* 1229c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 1230c66ac9dbSNicholas Bellinger */ 12312eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_show(struct config_item *item, 1232c66ac9dbSNicholas Bellinger char *page) 1233c66ac9dbSNicholas Bellinger { 1234c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 12352eafd729SChristoph Hellwig &to_t10_wwn(item)->unit_serial[0]); 1236c66ac9dbSNicholas Bellinger } 1237c66ac9dbSNicholas Bellinger 12382eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_unit_serial_store(struct config_item *item, 12392eafd729SChristoph Hellwig const char *page, size_t count) 1240c66ac9dbSNicholas Bellinger { 12412eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 12420fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 1243c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 1244c66ac9dbSNicholas Bellinger 1245c66ac9dbSNicholas Bellinger /* 1246c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 1247c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 1248c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 1249c66ac9dbSNicholas Bellinger * 1250c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 1251c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 1252c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 1253c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 1254c66ac9dbSNicholas Bellinger */ 12550fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 12566708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 1257c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 1258c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 1259c66ac9dbSNicholas Bellinger } 1260c66ac9dbSNicholas Bellinger 126160d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 12626708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 1263c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 1264c66ac9dbSNicholas Bellinger return -EOVERFLOW; 1265c66ac9dbSNicholas Bellinger } 1266c66ac9dbSNicholas Bellinger /* 1267c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 1268c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 1269c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 1270c66ac9dbSNicholas Bellinger * could cause negative effects. 1271c66ac9dbSNicholas Bellinger */ 12720fd97ccfSChristoph Hellwig if (dev->export_count) { 12736708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 1274c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 12750fd97ccfSChristoph Hellwig dev->export_count); 1276c66ac9dbSNicholas Bellinger return -EINVAL; 1277c66ac9dbSNicholas Bellinger } 12780fd97ccfSChristoph Hellwig 1279c66ac9dbSNicholas Bellinger /* 1280c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 1281c66ac9dbSNicholas Bellinger * 1282c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 1283c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 1284c66ac9dbSNicholas Bellinger */ 1285c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 1286c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 12870fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 1288c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 12890fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 1290c66ac9dbSNicholas Bellinger 12916708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 12920fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 1293c66ac9dbSNicholas Bellinger 1294c66ac9dbSNicholas Bellinger return count; 1295c66ac9dbSNicholas Bellinger } 1296c66ac9dbSNicholas Bellinger 1297c66ac9dbSNicholas Bellinger /* 1298c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 1299c66ac9dbSNicholas Bellinger */ 13002eafd729SChristoph Hellwig static ssize_t target_wwn_vpd_protocol_identifier_show(struct config_item *item, 1301c66ac9dbSNicholas Bellinger char *page) 1302c66ac9dbSNicholas Bellinger { 13032eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); 1304c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 1305c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 1306c66ac9dbSNicholas Bellinger ssize_t len = 0; 1307c66ac9dbSNicholas Bellinger 1308c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 1309c66ac9dbSNicholas Bellinger 1310c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 1311c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 13126708bb27SAndy Grover if (!vpd->protocol_identifier_set) 1313c66ac9dbSNicholas Bellinger continue; 1314c66ac9dbSNicholas Bellinger 1315c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 1316c66ac9dbSNicholas Bellinger 13176708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1318c66ac9dbSNicholas Bellinger break; 1319c66ac9dbSNicholas Bellinger 1320c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1321c66ac9dbSNicholas Bellinger } 1322c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 1323c66ac9dbSNicholas Bellinger 1324c66ac9dbSNicholas Bellinger return len; 1325c66ac9dbSNicholas Bellinger } 1326c66ac9dbSNicholas Bellinger 1327c66ac9dbSNicholas Bellinger /* 1328c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 1329c66ac9dbSNicholas Bellinger */ 1330c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 13312eafd729SChristoph Hellwig static ssize_t target_wwn_##_name##_show(struct config_item *item, \ 1332c66ac9dbSNicholas Bellinger char *page) \ 1333c66ac9dbSNicholas Bellinger { \ 13342eafd729SChristoph Hellwig struct t10_wwn *t10_wwn = to_t10_wwn(item); \ 1335c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 1336c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 1337c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 1338c66ac9dbSNicholas Bellinger \ 1339c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 1340c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 1341c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 1342c66ac9dbSNicholas Bellinger continue; \ 1343c66ac9dbSNicholas Bellinger \ 1344c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1345c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 13466708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1347c66ac9dbSNicholas Bellinger break; \ 1348c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1349c66ac9dbSNicholas Bellinger \ 1350c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1351c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 13526708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1353c66ac9dbSNicholas Bellinger break; \ 1354c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1355c66ac9dbSNicholas Bellinger \ 1356c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 1357c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 13586708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 1359c66ac9dbSNicholas Bellinger break; \ 1360c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 1361c66ac9dbSNicholas Bellinger } \ 1362c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 1363c66ac9dbSNicholas Bellinger \ 1364c66ac9dbSNicholas Bellinger return len; \ 1365c66ac9dbSNicholas Bellinger } 1366c66ac9dbSNicholas Bellinger 13672eafd729SChristoph Hellwig /* VPD page 0x83 Association: Logical Unit */ 1368c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 13692eafd729SChristoph Hellwig /* VPD page 0x83 Association: Target Port */ 1370c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 13712eafd729SChristoph Hellwig /* VPD page 0x83 Association: SCSI Target Device */ 1372c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 1373c66ac9dbSNicholas Bellinger 13742eafd729SChristoph Hellwig CONFIGFS_ATTR(target_wwn_, vpd_unit_serial); 13752eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_protocol_identifier); 13762eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_logical_unit); 13772eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_target_port); 13782eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_wwn_, vpd_assoc_scsi_target_device); 1379c66ac9dbSNicholas Bellinger 1380c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 13812eafd729SChristoph Hellwig &target_wwn_attr_vpd_unit_serial, 13822eafd729SChristoph Hellwig &target_wwn_attr_vpd_protocol_identifier, 13832eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_logical_unit, 13842eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_target_port, 13852eafd729SChristoph Hellwig &target_wwn_attr_vpd_assoc_scsi_target_device, 1386c66ac9dbSNicholas Bellinger NULL, 1387c66ac9dbSNicholas Bellinger }; 1388c66ac9dbSNicholas Bellinger 13892eafd729SChristoph Hellwig TB_CIT_SETUP(dev_wwn, NULL, NULL, target_core_dev_wwn_attrs); 1390c66ac9dbSNicholas Bellinger 1391f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 1392c66ac9dbSNicholas Bellinger 139391e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 1394c66ac9dbSNicholas Bellinger 13952eafd729SChristoph Hellwig static struct se_device *pr_to_dev(struct config_item *item) 13962eafd729SChristoph Hellwig { 13972eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, 13982eafd729SChristoph Hellwig dev_pr_group); 13992eafd729SChristoph Hellwig } 1400c66ac9dbSNicholas Bellinger 1401d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 1402d977f437SChristoph Hellwig char *page) 1403c66ac9dbSNicholas Bellinger { 1404c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1405c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1406c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1407c66ac9dbSNicholas Bellinger 1408c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1409c66ac9dbSNicholas Bellinger 1410c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1411d977f437SChristoph Hellwig if (!pr_reg) 1412d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 1413d977f437SChristoph Hellwig 1414c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1415d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 1416c66ac9dbSNicholas Bellinger 1417d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 141830c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1419d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 1420c66ac9dbSNicholas Bellinger } 1421c66ac9dbSNicholas Bellinger 1422d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 1423d977f437SChristoph Hellwig char *page) 1424c66ac9dbSNicholas Bellinger { 1425c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1426d977f437SChristoph Hellwig ssize_t len; 1427c66ac9dbSNicholas Bellinger 1428c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 1429d977f437SChristoph Hellwig if (se_nacl) { 1430d977f437SChristoph Hellwig len = sprintf(page, 1431d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 143230c7ca93SDavid Disseldorp se_nacl->se_tpg->se_tpg_tfo->fabric_name, 1433c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 1434d977f437SChristoph Hellwig } else { 1435d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 1436d977f437SChristoph Hellwig } 1437d977f437SChristoph Hellwig return len; 1438c66ac9dbSNicholas Bellinger } 1439c66ac9dbSNicholas Bellinger 14402eafd729SChristoph Hellwig static ssize_t target_pr_res_holder_show(struct config_item *item, char *page) 1441c66ac9dbSNicholas Bellinger { 14422eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1443d977f437SChristoph Hellwig int ret; 1444c66ac9dbSNicholas Bellinger 1445b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1446b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 1447b49d6f78SDavid Disseldorp 14484ec5bf0eSBryant G. Ly if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1449d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 1450c66ac9dbSNicholas Bellinger 1451d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 1452d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1453d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 1454d977f437SChristoph Hellwig else 1455d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 1456d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1457d977f437SChristoph Hellwig return ret; 1458c66ac9dbSNicholas Bellinger } 1459c66ac9dbSNicholas Bellinger 14602eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_all_tgt_pts_show(struct config_item *item, 14612eafd729SChristoph Hellwig char *page) 1462c66ac9dbSNicholas Bellinger { 14632eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1464c66ac9dbSNicholas Bellinger ssize_t len = 0; 1465c66ac9dbSNicholas Bellinger 1466c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1467d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 1468c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1469d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 1470c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 1471c66ac9dbSNicholas Bellinger " Ports registration\n"); 1472d977f437SChristoph Hellwig } else { 1473c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 1474c66ac9dbSNicholas Bellinger " Target Port registration\n"); 1475d977f437SChristoph Hellwig } 1476c66ac9dbSNicholas Bellinger 1477d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1478c66ac9dbSNicholas Bellinger return len; 1479c66ac9dbSNicholas Bellinger } 1480c66ac9dbSNicholas Bellinger 14812eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_generation_show(struct config_item *item, 14822eafd729SChristoph Hellwig char *page) 1483c66ac9dbSNicholas Bellinger { 14842eafd729SChristoph Hellwig return sprintf(page, "0x%08x\n", pr_to_dev(item)->t10_pr.pr_generation); 1485c66ac9dbSNicholas Bellinger } 1486c66ac9dbSNicholas Bellinger 1487c66ac9dbSNicholas Bellinger 14882eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_holder_tg_port_show(struct config_item *item, 14892eafd729SChristoph Hellwig char *page) 1490c66ac9dbSNicholas Bellinger { 14912eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1492c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 1493c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 1494c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 14959ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1496c66ac9dbSNicholas Bellinger ssize_t len = 0; 1497c66ac9dbSNicholas Bellinger 1498c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1499c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 15006708bb27SAndy Grover if (!pr_reg) { 1501c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 1502d977f437SChristoph Hellwig goto out_unlock; 1503c66ac9dbSNicholas Bellinger } 1504d977f437SChristoph Hellwig 1505c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 1506c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 1507e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 1508c66ac9dbSNicholas Bellinger 1509c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 151030c7ca93SDavid Disseldorp " Target Node Endpoint: %s\n", tfo->fabric_name, 1511c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 1512c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 151335d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 1514f2d30680SHannes Reinecke " %s Logical Unit: %llu\n", pr_reg->tg_pt_sep_rtpi, 151530c7ca93SDavid Disseldorp tfo->fabric_name, tfo->tpg_get_tag(se_tpg), 151630c7ca93SDavid Disseldorp tfo->fabric_name, pr_reg->pr_aptpl_target_lun); 1517c66ac9dbSNicholas Bellinger 1518d977f437SChristoph Hellwig out_unlock: 1519d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1520c66ac9dbSNicholas Bellinger return len; 1521c66ac9dbSNicholas Bellinger } 1522c66ac9dbSNicholas Bellinger 1523c66ac9dbSNicholas Bellinger 15242eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_registered_i_pts_show(struct config_item *item, 15252eafd729SChristoph Hellwig char *page) 1526c66ac9dbSNicholas Bellinger { 15272eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 15289ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 1529c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1530c66ac9dbSNicholas Bellinger unsigned char buf[384]; 1531c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 1532c66ac9dbSNicholas Bellinger ssize_t len = 0; 1533d2843c17SAndy Grover int reg_count = 0; 1534c66ac9dbSNicholas Bellinger 1535c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 1536c66ac9dbSNicholas Bellinger 15370fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 15380fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 1539c66ac9dbSNicholas Bellinger pr_reg_list) { 1540c66ac9dbSNicholas Bellinger 1541c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 1542c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 1543c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 1544d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 1545c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 1546c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 154730c7ca93SDavid Disseldorp tfo->fabric_name, 1548d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 1549c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 1550c66ac9dbSNicholas Bellinger 15516708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 1552c66ac9dbSNicholas Bellinger break; 1553c66ac9dbSNicholas Bellinger 1554c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 1555c66ac9dbSNicholas Bellinger reg_count++; 1556c66ac9dbSNicholas Bellinger } 15570fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 1558c66ac9dbSNicholas Bellinger 15596708bb27SAndy Grover if (!reg_count) 1560c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 1561c66ac9dbSNicholas Bellinger 1562c66ac9dbSNicholas Bellinger return len; 1563c66ac9dbSNicholas Bellinger } 1564c66ac9dbSNicholas Bellinger 15652eafd729SChristoph Hellwig static ssize_t target_pr_res_pr_type_show(struct config_item *item, char *page) 1566c66ac9dbSNicholas Bellinger { 15672eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 1568c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 1569c66ac9dbSNicholas Bellinger ssize_t len = 0; 1570c66ac9dbSNicholas Bellinger 1571c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 1572c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 1573d977f437SChristoph Hellwig if (pr_reg) { 1574c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 1575c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 1576d977f437SChristoph Hellwig } else { 1577d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 1578d977f437SChristoph Hellwig } 1579c66ac9dbSNicholas Bellinger 1580d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 1581c66ac9dbSNicholas Bellinger return len; 1582c66ac9dbSNicholas Bellinger } 1583c66ac9dbSNicholas Bellinger 15842eafd729SChristoph Hellwig static ssize_t target_pr_res_type_show(struct config_item *item, char *page) 1585c66ac9dbSNicholas Bellinger { 15862eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 15872eafd729SChristoph Hellwig 1588b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr) 1589b49d6f78SDavid Disseldorp return sprintf(page, "SPC_RESERVATIONS_DISABLED\n"); 15904ec5bf0eSBryant G. Ly if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR) 1591d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 1592b49d6f78SDavid Disseldorp if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1593d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 1594b49d6f78SDavid Disseldorp 1595d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 1596c66ac9dbSNicholas Bellinger } 1597c66ac9dbSNicholas Bellinger 15982eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_active_show(struct config_item *item, 15992eafd729SChristoph Hellwig char *page) 1600c66ac9dbSNicholas Bellinger { 16012eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 16022eafd729SChristoph Hellwig 1603b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1604b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1605c66ac9dbSNicholas Bellinger return 0; 1606c66ac9dbSNicholas Bellinger 1607c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 16080fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 1609c66ac9dbSNicholas Bellinger } 1610c66ac9dbSNicholas Bellinger 16112eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_show(struct config_item *item, 16122eafd729SChristoph Hellwig char *page) 1613c66ac9dbSNicholas Bellinger { 16142eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 16152eafd729SChristoph Hellwig 1616b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1617b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 1618c66ac9dbSNicholas Bellinger return 0; 1619c66ac9dbSNicholas Bellinger 1620c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 1621c66ac9dbSNicholas Bellinger } 1622c66ac9dbSNicholas Bellinger 1623c66ac9dbSNicholas Bellinger enum { 1624c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 1625c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 1626c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 1627c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 1628c66ac9dbSNicholas Bellinger }; 1629c66ac9dbSNicholas Bellinger 1630c66ac9dbSNicholas Bellinger static match_table_t tokens = { 1631c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 1632c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 1633c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 1634c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 1635c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 1636c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 1637c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 1638c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 1639a2db857bStangwenji {Opt_mapped_lun, "mapped_lun=%u"}, 1640c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 1641c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 1642c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 1643c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 1644a2db857bStangwenji {Opt_target_lun, "target_lun=%u"}, 1645c66ac9dbSNicholas Bellinger {Opt_err, NULL} 1646c66ac9dbSNicholas Bellinger }; 1647c66ac9dbSNicholas Bellinger 16482eafd729SChristoph Hellwig static ssize_t target_pr_res_aptpl_metadata_store(struct config_item *item, 16492eafd729SChristoph Hellwig const char *page, size_t count) 1650c66ac9dbSNicholas Bellinger { 16512eafd729SChristoph Hellwig struct se_device *dev = pr_to_dev(item); 16526d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 16536d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 16548d213559SJoern Engel char *orig, *ptr, *opts; 1655c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1656c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1657c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1658f2d30680SHannes Reinecke u64 mapped_lun = 0, target_lun = 0; 1659c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 166045fb94c2SBart Van Assche u16 tpgt = 0; 166145fb94c2SBart Van Assche u8 type = 0; 1662c66ac9dbSNicholas Bellinger 1663b49d6f78SDavid Disseldorp if (!dev->dev_attrib.emulate_pr || 1664b49d6f78SDavid Disseldorp (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH_PGR)) 16659105bfc0SAndy Grover return count; 1666d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 16679105bfc0SAndy Grover return count; 1668c66ac9dbSNicholas Bellinger 16690fd97ccfSChristoph Hellwig if (dev->export_count) { 16706708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1671c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1672c66ac9dbSNicholas Bellinger return -EINVAL; 1673c66ac9dbSNicholas Bellinger } 1674c66ac9dbSNicholas Bellinger 1675c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1676c66ac9dbSNicholas Bellinger if (!opts) 1677c66ac9dbSNicholas Bellinger return -ENOMEM; 1678c66ac9dbSNicholas Bellinger 1679c66ac9dbSNicholas Bellinger orig = opts; 168090c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1681c66ac9dbSNicholas Bellinger if (!*ptr) 1682c66ac9dbSNicholas Bellinger continue; 1683c66ac9dbSNicholas Bellinger 1684c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1685c66ac9dbSNicholas Bellinger switch (token) { 1686c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 16878d213559SJoern Engel i_fabric = match_strdup(args); 16886d180253SJesper Juhl if (!i_fabric) { 16896d180253SJesper Juhl ret = -ENOMEM; 16906d180253SJesper Juhl goto out; 16916d180253SJesper Juhl } 1692c66ac9dbSNicholas Bellinger break; 1693c66ac9dbSNicholas Bellinger case Opt_initiator_node: 16948d213559SJoern Engel i_port = match_strdup(args); 16956d180253SJesper Juhl if (!i_port) { 16966d180253SJesper Juhl ret = -ENOMEM; 16976d180253SJesper Juhl goto out; 16986d180253SJesper Juhl } 169960d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 17006708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1701c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1702c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1703c66ac9dbSNicholas Bellinger ret = -EINVAL; 1704c66ac9dbSNicholas Bellinger break; 1705c66ac9dbSNicholas Bellinger } 1706c66ac9dbSNicholas Bellinger break; 1707c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 17088d213559SJoern Engel isid = match_strdup(args); 17096d180253SJesper Juhl if (!isid) { 17106d180253SJesper Juhl ret = -ENOMEM; 17116d180253SJesper Juhl goto out; 17126d180253SJesper Juhl } 171360d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 17146708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1715c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1716c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1717c66ac9dbSNicholas Bellinger ret = -EINVAL; 1718c66ac9dbSNicholas Bellinger break; 1719c66ac9dbSNicholas Bellinger } 1720c66ac9dbSNicholas Bellinger break; 1721c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 1722a2db857bStangwenji ret = match_u64(args, &tmp_ll); 1723c66ac9dbSNicholas Bellinger if (ret < 0) { 17248d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1725c66ac9dbSNicholas Bellinger goto out; 1726c66ac9dbSNicholas Bellinger } 1727c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1728c66ac9dbSNicholas Bellinger break; 1729c66ac9dbSNicholas Bellinger /* 1730c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1731c66ac9dbSNicholas Bellinger */ 1732c66ac9dbSNicholas Bellinger case Opt_res_holder: 1733c2091026SDavid Disseldorp ret = match_int(args, &arg); 1734c2091026SDavid Disseldorp if (ret) 1735c2091026SDavid Disseldorp goto out; 1736c66ac9dbSNicholas Bellinger res_holder = arg; 1737c66ac9dbSNicholas Bellinger break; 1738c66ac9dbSNicholas Bellinger case Opt_res_type: 1739c2091026SDavid Disseldorp ret = match_int(args, &arg); 1740c2091026SDavid Disseldorp if (ret) 1741c2091026SDavid Disseldorp goto out; 1742c66ac9dbSNicholas Bellinger type = (u8)arg; 1743c66ac9dbSNicholas Bellinger break; 1744c66ac9dbSNicholas Bellinger case Opt_res_scope: 1745c2091026SDavid Disseldorp ret = match_int(args, &arg); 1746c2091026SDavid Disseldorp if (ret) 1747c2091026SDavid Disseldorp goto out; 1748c66ac9dbSNicholas Bellinger break; 1749c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1750c2091026SDavid Disseldorp ret = match_int(args, &arg); 1751c2091026SDavid Disseldorp if (ret) 1752c2091026SDavid Disseldorp goto out; 1753c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1754c66ac9dbSNicholas Bellinger break; 1755c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1756a2db857bStangwenji ret = match_u64(args, &tmp_ll); 1757c2091026SDavid Disseldorp if (ret) 1758c2091026SDavid Disseldorp goto out; 1759a2db857bStangwenji mapped_lun = (u64)tmp_ll; 1760c66ac9dbSNicholas Bellinger break; 1761c66ac9dbSNicholas Bellinger /* 1762c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1763c66ac9dbSNicholas Bellinger */ 1764c66ac9dbSNicholas Bellinger case Opt_target_fabric: 17658d213559SJoern Engel t_fabric = match_strdup(args); 17666d180253SJesper Juhl if (!t_fabric) { 17676d180253SJesper Juhl ret = -ENOMEM; 17686d180253SJesper Juhl goto out; 17696d180253SJesper Juhl } 1770c66ac9dbSNicholas Bellinger break; 1771c66ac9dbSNicholas Bellinger case Opt_target_node: 17728d213559SJoern Engel t_port = match_strdup(args); 17736d180253SJesper Juhl if (!t_port) { 17746d180253SJesper Juhl ret = -ENOMEM; 17756d180253SJesper Juhl goto out; 17766d180253SJesper Juhl } 177760d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 17786708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1779c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1780c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1781c66ac9dbSNicholas Bellinger ret = -EINVAL; 1782c66ac9dbSNicholas Bellinger break; 1783c66ac9dbSNicholas Bellinger } 1784c66ac9dbSNicholas Bellinger break; 1785c66ac9dbSNicholas Bellinger case Opt_tpgt: 1786c2091026SDavid Disseldorp ret = match_int(args, &arg); 1787c2091026SDavid Disseldorp if (ret) 1788c2091026SDavid Disseldorp goto out; 1789c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1790c66ac9dbSNicholas Bellinger break; 1791c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1792c2091026SDavid Disseldorp ret = match_int(args, &arg); 1793c2091026SDavid Disseldorp if (ret) 1794c2091026SDavid Disseldorp goto out; 1795c66ac9dbSNicholas Bellinger break; 1796c66ac9dbSNicholas Bellinger case Opt_target_lun: 1797a2db857bStangwenji ret = match_u64(args, &tmp_ll); 1798c2091026SDavid Disseldorp if (ret) 1799c2091026SDavid Disseldorp goto out; 1800a2db857bStangwenji target_lun = (u64)tmp_ll; 1801c66ac9dbSNicholas Bellinger break; 1802c66ac9dbSNicholas Bellinger default: 1803c66ac9dbSNicholas Bellinger break; 1804c66ac9dbSNicholas Bellinger } 1805c66ac9dbSNicholas Bellinger } 1806c66ac9dbSNicholas Bellinger 18076708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 18086708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1809c66ac9dbSNicholas Bellinger ret = -EINVAL; 1810c66ac9dbSNicholas Bellinger goto out; 1811c66ac9dbSNicholas Bellinger } 1812c66ac9dbSNicholas Bellinger 1813c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 18146708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1815c66ac9dbSNicholas Bellinger " holder\n", type); 1816c66ac9dbSNicholas Bellinger ret = -EINVAL; 1817c66ac9dbSNicholas Bellinger goto out; 1818c66ac9dbSNicholas Bellinger } 1819c66ac9dbSNicholas Bellinger 18200fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1821c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1822c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1823c66ac9dbSNicholas Bellinger out: 18246d180253SJesper Juhl kfree(i_fabric); 18256d180253SJesper Juhl kfree(i_port); 18266d180253SJesper Juhl kfree(isid); 18276d180253SJesper Juhl kfree(t_fabric); 18286d180253SJesper Juhl kfree(t_port); 1829c66ac9dbSNicholas Bellinger kfree(orig); 1830c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1831c66ac9dbSNicholas Bellinger } 1832c66ac9dbSNicholas Bellinger 1833c66ac9dbSNicholas Bellinger 18342eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_holder); 18352eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_all_tgt_pts); 18362eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_generation); 18372eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_holder_tg_port); 18382eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_registered_i_pts); 18392eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_pr_type); 18402eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_type); 18412eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_pr_, res_aptpl_active); 18422eafd729SChristoph Hellwig CONFIGFS_ATTR(target_pr_, res_aptpl_metadata); 1843c66ac9dbSNicholas Bellinger 1844c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 18452eafd729SChristoph Hellwig &target_pr_attr_res_holder, 18462eafd729SChristoph Hellwig &target_pr_attr_res_pr_all_tgt_pts, 18472eafd729SChristoph Hellwig &target_pr_attr_res_pr_generation, 18482eafd729SChristoph Hellwig &target_pr_attr_res_pr_holder_tg_port, 18492eafd729SChristoph Hellwig &target_pr_attr_res_pr_registered_i_pts, 18502eafd729SChristoph Hellwig &target_pr_attr_res_pr_type, 18512eafd729SChristoph Hellwig &target_pr_attr_res_type, 18522eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_active, 18532eafd729SChristoph Hellwig &target_pr_attr_res_aptpl_metadata, 1854c66ac9dbSNicholas Bellinger NULL, 1855c66ac9dbSNicholas Bellinger }; 1856c66ac9dbSNicholas Bellinger 18572eafd729SChristoph Hellwig TB_CIT_SETUP(dev_pr, NULL, NULL, target_core_dev_pr_attrs); 1858c66ac9dbSNicholas Bellinger 185991e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 1860c66ac9dbSNicholas Bellinger 186173112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 1862c66ac9dbSNicholas Bellinger 18632eafd729SChristoph Hellwig static inline struct se_device *to_device(struct config_item *item) 1864c66ac9dbSNicholas Bellinger { 18652eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_device, dev_group); 18662eafd729SChristoph Hellwig } 18672eafd729SChristoph Hellwig 18682eafd729SChristoph Hellwig static ssize_t target_dev_info_show(struct config_item *item, char *page) 18692eafd729SChristoph Hellwig { 18702eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 1871c66ac9dbSNicholas Bellinger int bl = 0; 1872c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1873c66ac9dbSNicholas Bellinger 18740fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 1875c66ac9dbSNicholas Bellinger read_bytes += bl; 18760a06d430SChristoph Hellwig read_bytes += dev->transport->show_configfs_dev_params(dev, 18770a06d430SChristoph Hellwig page+read_bytes); 1878c66ac9dbSNicholas Bellinger return read_bytes; 1879c66ac9dbSNicholas Bellinger } 1880c66ac9dbSNicholas Bellinger 18812eafd729SChristoph Hellwig static ssize_t target_dev_control_store(struct config_item *item, 18822eafd729SChristoph Hellwig const char *page, size_t count) 1883c66ac9dbSNicholas Bellinger { 18842eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 1885c66ac9dbSNicholas Bellinger 18860a06d430SChristoph Hellwig return dev->transport->set_configfs_dev_params(dev, page, count); 1887c66ac9dbSNicholas Bellinger } 1888c66ac9dbSNicholas Bellinger 18892eafd729SChristoph Hellwig static ssize_t target_dev_alias_show(struct config_item *item, char *page) 1890c66ac9dbSNicholas Bellinger { 18912eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 1892c66ac9dbSNicholas Bellinger 18930fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 1894c66ac9dbSNicholas Bellinger return 0; 1895c66ac9dbSNicholas Bellinger 18960fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1897c66ac9dbSNicholas Bellinger } 1898c66ac9dbSNicholas Bellinger 18992eafd729SChristoph Hellwig static ssize_t target_dev_alias_store(struct config_item *item, 19002eafd729SChristoph Hellwig const char *page, size_t count) 1901c66ac9dbSNicholas Bellinger { 19022eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 19030fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1904c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1905c66ac9dbSNicholas Bellinger 1906c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 19076708bb27SAndy Grover pr_err("alias count: %d exceeds" 1908c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1909c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1910c66ac9dbSNicholas Bellinger return -EINVAL; 1911c66ac9dbSNicholas Bellinger } 1912c66ac9dbSNicholas Bellinger 19130fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 19143011684cSDan Carpenter if (!read_bytes) 19153011684cSDan Carpenter return -EINVAL; 19160fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 19170fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 19180877eafdSSebastian Andrzej Siewior 19190fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 19203011684cSDan Carpenter 19216708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1922c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 19230fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 19240fd97ccfSChristoph Hellwig dev->dev_alias); 1925c66ac9dbSNicholas Bellinger 1926c66ac9dbSNicholas Bellinger return read_bytes; 1927c66ac9dbSNicholas Bellinger } 1928c66ac9dbSNicholas Bellinger 19292eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_show(struct config_item *item, char *page) 1930c66ac9dbSNicholas Bellinger { 19312eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 1932c66ac9dbSNicholas Bellinger 19330fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1934c66ac9dbSNicholas Bellinger return 0; 1935c66ac9dbSNicholas Bellinger 19360fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1937c66ac9dbSNicholas Bellinger } 1938c66ac9dbSNicholas Bellinger 19392eafd729SChristoph Hellwig static ssize_t target_dev_udev_path_store(struct config_item *item, 19402eafd729SChristoph Hellwig const char *page, size_t count) 1941c66ac9dbSNicholas Bellinger { 19422eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 19430fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1944c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1945c66ac9dbSNicholas Bellinger 1946c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 19476708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1948c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1949c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1950c66ac9dbSNicholas Bellinger return -EINVAL; 1951c66ac9dbSNicholas Bellinger } 1952c66ac9dbSNicholas Bellinger 19530fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1954c66ac9dbSNicholas Bellinger "%s", page); 19553011684cSDan Carpenter if (!read_bytes) 19563011684cSDan Carpenter return -EINVAL; 19570fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 19580fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 19590877eafdSSebastian Andrzej Siewior 19600fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 19613011684cSDan Carpenter 19626708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1963c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 19640fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 19650fd97ccfSChristoph Hellwig dev->udev_path); 1966c66ac9dbSNicholas Bellinger 1967c66ac9dbSNicholas Bellinger return read_bytes; 1968c66ac9dbSNicholas Bellinger } 1969c66ac9dbSNicholas Bellinger 19702eafd729SChristoph Hellwig static ssize_t target_dev_enable_show(struct config_item *item, char *page) 197164146db7SAndy Grover { 19722eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 197364146db7SAndy Grover 1974cb0f32e1SMike Christie return snprintf(page, PAGE_SIZE, "%d\n", target_dev_configured(dev)); 197564146db7SAndy Grover } 197664146db7SAndy Grover 19772eafd729SChristoph Hellwig static ssize_t target_dev_enable_store(struct config_item *item, 19782eafd729SChristoph Hellwig const char *page, size_t count) 1979c66ac9dbSNicholas Bellinger { 19802eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 1981c66ac9dbSNicholas Bellinger char *ptr; 19820fd97ccfSChristoph Hellwig int ret; 1983c66ac9dbSNicholas Bellinger 1984c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 19856708bb27SAndy Grover if (!ptr) { 19866708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1987c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1988c66ac9dbSNicholas Bellinger return -EINVAL; 1989c66ac9dbSNicholas Bellinger } 1990c66ac9dbSNicholas Bellinger 19910fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 19920fd97ccfSChristoph Hellwig if (ret) 19930fd97ccfSChristoph Hellwig return ret; 1994c66ac9dbSNicholas Bellinger return count; 1995c66ac9dbSNicholas Bellinger } 1996c66ac9dbSNicholas Bellinger 19972eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_show(struct config_item *item, char *page) 1998c66ac9dbSNicholas Bellinger { 19992eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2000c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 2001c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2002c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2003c66ac9dbSNicholas Bellinger ssize_t len = 0; 2004c66ac9dbSNicholas Bellinger 2005c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 2006c87fbd56SChristoph Hellwig if (!lu_gp_mem) 2007c87fbd56SChristoph Hellwig return 0; 2008c66ac9dbSNicholas Bellinger 2009c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2010c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 20116708bb27SAndy Grover if (lu_gp) { 2012c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 2013c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 2014c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 2015c66ac9dbSNicholas Bellinger } 2016c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2017c66ac9dbSNicholas Bellinger 2018c66ac9dbSNicholas Bellinger return len; 2019c66ac9dbSNicholas Bellinger } 2020c66ac9dbSNicholas Bellinger 20212eafd729SChristoph Hellwig static ssize_t target_dev_alua_lu_gp_store(struct config_item *item, 20222eafd729SChristoph Hellwig const char *page, size_t count) 2023c66ac9dbSNicholas Bellinger { 20242eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 20250fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 2026c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 2027c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2028c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2029c66ac9dbSNicholas Bellinger int move = 0; 2030c66ac9dbSNicholas Bellinger 2031c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 2032c87fbd56SChristoph Hellwig if (!lu_gp_mem) 20339105bfc0SAndy Grover return count; 2034c87fbd56SChristoph Hellwig 2035c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 20366708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 2037c66ac9dbSNicholas Bellinger return -EINVAL; 2038c66ac9dbSNicholas Bellinger } 2039c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2040c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 2041c66ac9dbSNicholas Bellinger /* 2042c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 2043c66ac9dbSNicholas Bellinger * making a new group association. 2044c66ac9dbSNicholas Bellinger */ 2045c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 2046c66ac9dbSNicholas Bellinger /* 2047c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 2048c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 2049c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 2050c66ac9dbSNicholas Bellinger */ 2051c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 20526708bb27SAndy Grover if (!lu_gp_new) 2053c66ac9dbSNicholas Bellinger return -ENODEV; 2054c66ac9dbSNicholas Bellinger } 2055c66ac9dbSNicholas Bellinger 2056c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 2057c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 20586708bb27SAndy Grover if (lu_gp) { 2059c66ac9dbSNicholas Bellinger /* 2060c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 2061c66ac9dbSNicholas Bellinger * with NULL 2062c66ac9dbSNicholas Bellinger */ 20636708bb27SAndy Grover if (!lu_gp_new) { 20646708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 2065c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 2066c66ac9dbSNicholas Bellinger " %hu\n", 2067c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 20680fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2069c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 2070c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2071c66ac9dbSNicholas Bellinger 2072c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2073c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2074c66ac9dbSNicholas Bellinger 2075c66ac9dbSNicholas Bellinger return count; 2076c66ac9dbSNicholas Bellinger } 2077c66ac9dbSNicholas Bellinger /* 2078c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 2079c66ac9dbSNicholas Bellinger */ 2080c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 2081c66ac9dbSNicholas Bellinger move = 1; 2082c66ac9dbSNicholas Bellinger } 2083c66ac9dbSNicholas Bellinger /* 2084c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 2085c66ac9dbSNicholas Bellinger */ 2086c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 2087c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 2088c66ac9dbSNicholas Bellinger 20896708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 2090c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 2091c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 2092c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 20930fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 2094c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 2095c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 2096c66ac9dbSNicholas Bellinger 2097c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 2098c66ac9dbSNicholas Bellinger return count; 2099c66ac9dbSNicholas Bellinger } 2100c66ac9dbSNicholas Bellinger 21012eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_show(struct config_item *item, char *page) 2102229d4f11SHannes Reinecke { 21032eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2104229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 2105229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 2106229d4f11SHannes Reinecke char *b = page; 2107229d4f11SHannes Reinecke int bl = 0; 2108229d4f11SHannes Reinecke char state; 2109229d4f11SHannes Reinecke 2110229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 2111229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 2112229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 2113229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 2114229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 2115229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 2116229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 2117229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 2118229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 2119229d4f11SHannes Reinecke lba_map_mem_list) { 2120229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 2121229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 2122229d4f11SHannes Reinecke state = 'O'; 2123229d4f11SHannes Reinecke break; 2124229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 2125229d4f11SHannes Reinecke state = 'A'; 2126229d4f11SHannes Reinecke break; 2127229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 2128229d4f11SHannes Reinecke state = 'S'; 2129229d4f11SHannes Reinecke break; 2130229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 2131229d4f11SHannes Reinecke state = 'U'; 2132229d4f11SHannes Reinecke break; 2133229d4f11SHannes Reinecke default: 2134229d4f11SHannes Reinecke state = '.'; 2135229d4f11SHannes Reinecke break; 2136229d4f11SHannes Reinecke } 2137229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 2138229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 2139229d4f11SHannes Reinecke } 2140229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 2141229d4f11SHannes Reinecke } 2142229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 2143229d4f11SHannes Reinecke return bl; 2144229d4f11SHannes Reinecke } 2145229d4f11SHannes Reinecke 21462eafd729SChristoph Hellwig static ssize_t target_dev_lba_map_store(struct config_item *item, 21472eafd729SChristoph Hellwig const char *page, size_t count) 2148229d4f11SHannes Reinecke { 21492eafd729SChristoph Hellwig struct se_device *dev = to_device(item); 2150229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 2151229d4f11SHannes Reinecke struct list_head lba_list; 2152f0a8afecSBart Van Assche char *map_entries, *orig, *ptr; 2153229d4f11SHannes Reinecke char state; 2154229d4f11SHannes Reinecke int pg_num = -1, pg; 2155229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 2156229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 2157229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 2158229d4f11SHannes Reinecke 2159f0a8afecSBart Van Assche orig = map_entries = kstrdup(page, GFP_KERNEL); 2160229d4f11SHannes Reinecke if (!map_entries) 2161229d4f11SHannes Reinecke return -ENOMEM; 2162229d4f11SHannes Reinecke 2163229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 2164229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 2165229d4f11SHannes Reinecke if (!*ptr) 2166229d4f11SHannes Reinecke continue; 2167229d4f11SHannes Reinecke 2168229d4f11SHannes Reinecke if (num == 0) { 2169229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 2170229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 2171229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2172229d4f11SHannes Reinecke ret = -EINVAL; 2173229d4f11SHannes Reinecke break; 2174229d4f11SHannes Reinecke } 2175229d4f11SHannes Reinecke num++; 2176229d4f11SHannes Reinecke continue; 2177229d4f11SHannes Reinecke } 2178229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 2179229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 2180229d4f11SHannes Reinecke ret = -EINVAL; 2181229d4f11SHannes Reinecke break; 2182229d4f11SHannes Reinecke } 2183229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2184229d4f11SHannes Reinecke if (!ptr) { 2185229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 2186229d4f11SHannes Reinecke ret = -EINVAL; 2187229d4f11SHannes Reinecke break; 2188229d4f11SHannes Reinecke } 2189229d4f11SHannes Reinecke ptr++; 2190229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2191229d4f11SHannes Reinecke if (!ptr) { 2192229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 2193229d4f11SHannes Reinecke num); 2194229d4f11SHannes Reinecke ret = -EINVAL; 2195229d4f11SHannes Reinecke break; 2196229d4f11SHannes Reinecke } 2197229d4f11SHannes Reinecke ptr++; 2198229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 2199229d4f11SHannes Reinecke start_lba, end_lba); 2200229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 2201229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 2202229d4f11SHannes Reinecke break; 2203229d4f11SHannes Reinecke } 2204229d4f11SHannes Reinecke pg = 0; 2205229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 2206229d4f11SHannes Reinecke switch (state) { 2207229d4f11SHannes Reinecke case 'O': 2208229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 2209229d4f11SHannes Reinecke break; 2210229d4f11SHannes Reinecke case 'A': 2211229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 2212229d4f11SHannes Reinecke break; 2213229d4f11SHannes Reinecke case 'S': 2214229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 2215229d4f11SHannes Reinecke break; 2216229d4f11SHannes Reinecke case 'U': 2217229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 2218229d4f11SHannes Reinecke break; 2219229d4f11SHannes Reinecke default: 2220229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 2221229d4f11SHannes Reinecke ret = -EINVAL; 2222229d4f11SHannes Reinecke goto out; 2223229d4f11SHannes Reinecke } 2224229d4f11SHannes Reinecke 2225229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 2226229d4f11SHannes Reinecke pg_id, alua_state); 2227229d4f11SHannes Reinecke if (ret) { 2228229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 2229229d4f11SHannes Reinecke "at line %d\n", 2230229d4f11SHannes Reinecke pg_id, state, num); 2231229d4f11SHannes Reinecke break; 2232229d4f11SHannes Reinecke } 2233229d4f11SHannes Reinecke pg++; 2234229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 2235229d4f11SHannes Reinecke if (ptr) 2236229d4f11SHannes Reinecke ptr++; 2237229d4f11SHannes Reinecke else 2238229d4f11SHannes Reinecke break; 2239229d4f11SHannes Reinecke } 2240229d4f11SHannes Reinecke if (pg_num == -1) 2241229d4f11SHannes Reinecke pg_num = pg; 2242229d4f11SHannes Reinecke else if (pg != pg_num) { 2243229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 2244229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 2245229d4f11SHannes Reinecke ret = -EINVAL; 2246229d4f11SHannes Reinecke break; 2247229d4f11SHannes Reinecke } 2248229d4f11SHannes Reinecke num++; 2249229d4f11SHannes Reinecke } 2250229d4f11SHannes Reinecke out: 2251229d4f11SHannes Reinecke if (ret) { 2252229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 2253229d4f11SHannes Reinecke count = ret; 2254229d4f11SHannes Reinecke } else 2255229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 2256229d4f11SHannes Reinecke segment_size, segment_mult); 2257f0a8afecSBart Van Assche kfree(orig); 2258229d4f11SHannes Reinecke return count; 2259229d4f11SHannes Reinecke } 2260229d4f11SHannes Reinecke 22612eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_dev_, info); 22622eafd729SChristoph Hellwig CONFIGFS_ATTR_WO(target_dev_, control); 22632eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alias); 22642eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, udev_path); 22652eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, enable); 22662eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, alua_lu_gp); 22672eafd729SChristoph Hellwig CONFIGFS_ATTR(target_dev_, lba_map); 2268229d4f11SHannes Reinecke 226973112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 22702eafd729SChristoph Hellwig &target_dev_attr_info, 22712eafd729SChristoph Hellwig &target_dev_attr_control, 22722eafd729SChristoph Hellwig &target_dev_attr_alias, 22732eafd729SChristoph Hellwig &target_dev_attr_udev_path, 22742eafd729SChristoph Hellwig &target_dev_attr_enable, 22752eafd729SChristoph Hellwig &target_dev_attr_alua_lu_gp, 22762eafd729SChristoph Hellwig &target_dev_attr_lba_map, 2277c66ac9dbSNicholas Bellinger NULL, 2278c66ac9dbSNicholas Bellinger }; 2279c66ac9dbSNicholas Bellinger 2280c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 2281c66ac9dbSNicholas Bellinger { 22820fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 22830fd97ccfSChristoph Hellwig struct se_device *dev = 22840fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2285c66ac9dbSNicholas Bellinger 22860fd97ccfSChristoph Hellwig target_free_device(dev); 2287c66ac9dbSNicholas Bellinger } 2288c66ac9dbSNicholas Bellinger 2289c17cd249SNicholas Bellinger /* 2290c17cd249SNicholas Bellinger * Used in target_core_fabric_configfs.c to verify valid se_device symlink 2291c17cd249SNicholas Bellinger * within target_fabric_port_link() 2292c17cd249SNicholas Bellinger */ 2293c17cd249SNicholas Bellinger struct configfs_item_operations target_core_dev_item_ops = { 2294c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 2295c66ac9dbSNicholas Bellinger }; 2296c66ac9dbSNicholas Bellinger 229773112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 2298c66ac9dbSNicholas Bellinger 229973112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 2300c66ac9dbSNicholas Bellinger 2301c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 2302c66ac9dbSNicholas Bellinger 23032eafd729SChristoph Hellwig static inline struct t10_alua_lu_gp *to_lu_gp(struct config_item *item) 2304c66ac9dbSNicholas Bellinger { 23052eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_lu_gp, 23062eafd729SChristoph Hellwig lu_gp_group); 23072eafd729SChristoph Hellwig } 23082eafd729SChristoph Hellwig 23092eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_show(struct config_item *item, char *page) 23102eafd729SChristoph Hellwig { 23112eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 23122eafd729SChristoph Hellwig 23136708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 2314c66ac9dbSNicholas Bellinger return 0; 2315c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 2316c66ac9dbSNicholas Bellinger } 2317c66ac9dbSNicholas Bellinger 23182eafd729SChristoph Hellwig static ssize_t target_lu_gp_lu_gp_id_store(struct config_item *item, 23192eafd729SChristoph Hellwig const char *page, size_t count) 2320c66ac9dbSNicholas Bellinger { 23212eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2322c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 2323c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 2324c66ac9dbSNicholas Bellinger int ret; 2325c66ac9dbSNicholas Bellinger 232657103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 2327c66ac9dbSNicholas Bellinger if (ret < 0) { 232857103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2329c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 233057103d7fSJingoo Han return ret; 2331c66ac9dbSNicholas Bellinger } 2332c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 23336708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 2334c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 2335c66ac9dbSNicholas Bellinger return -EINVAL; 2336c66ac9dbSNicholas Bellinger } 2337c66ac9dbSNicholas Bellinger 2338c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 2339c66ac9dbSNicholas Bellinger if (ret < 0) 2340c66ac9dbSNicholas Bellinger return -EINVAL; 2341c66ac9dbSNicholas Bellinger 23426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 2343c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 2344c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 2345c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 2346c66ac9dbSNicholas Bellinger 2347c66ac9dbSNicholas Bellinger return count; 2348c66ac9dbSNicholas Bellinger } 2349c66ac9dbSNicholas Bellinger 23502eafd729SChristoph Hellwig static ssize_t target_lu_gp_members_show(struct config_item *item, char *page) 2351c66ac9dbSNicholas Bellinger { 23522eafd729SChristoph Hellwig struct t10_alua_lu_gp *lu_gp = to_lu_gp(item); 2353c66ac9dbSNicholas Bellinger struct se_device *dev; 2354c66ac9dbSNicholas Bellinger struct se_hba *hba; 2355c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 2356c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2357c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 2358c66ac9dbSNicholas Bellinger 2359c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 2360c66ac9dbSNicholas Bellinger 2361c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 2362c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 2363c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 23640fd97ccfSChristoph Hellwig hba = dev->se_hba; 2365c66ac9dbSNicholas Bellinger 2366c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 2367c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 23680fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 2369c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2370c66ac9dbSNicholas Bellinger 2371c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 23726708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2373c66ac9dbSNicholas Bellinger "_members buffer\n"); 2374c66ac9dbSNicholas Bellinger break; 2375c66ac9dbSNicholas Bellinger } 2376c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2377c66ac9dbSNicholas Bellinger len += cur_len; 2378c66ac9dbSNicholas Bellinger } 2379c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 2380c66ac9dbSNicholas Bellinger 2381c66ac9dbSNicholas Bellinger return len; 2382c66ac9dbSNicholas Bellinger } 2383c66ac9dbSNicholas Bellinger 23842eafd729SChristoph Hellwig CONFIGFS_ATTR(target_lu_gp_, lu_gp_id); 23852eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_lu_gp_, members); 2386c66ac9dbSNicholas Bellinger 2387c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 23882eafd729SChristoph Hellwig &target_lu_gp_attr_lu_gp_id, 23892eafd729SChristoph Hellwig &target_lu_gp_attr_members, 2390c66ac9dbSNicholas Bellinger NULL, 2391c66ac9dbSNicholas Bellinger }; 2392c66ac9dbSNicholas Bellinger 23931f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 23941f6fe7cbSNicholas Bellinger { 23951f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 23961f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 23971f6fe7cbSNicholas Bellinger 23981f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 23991f6fe7cbSNicholas Bellinger } 24001f6fe7cbSNicholas Bellinger 2401c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 24021f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 2403c66ac9dbSNicholas Bellinger }; 2404c66ac9dbSNicholas Bellinger 2405ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gp_cit = { 2406c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 2407c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 2408c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2409c66ac9dbSNicholas Bellinger }; 2410c66ac9dbSNicholas Bellinger 2411c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 2412c66ac9dbSNicholas Bellinger 2413c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 2414c66ac9dbSNicholas Bellinger 2415c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 2416c66ac9dbSNicholas Bellinger struct config_group *group, 2417c66ac9dbSNicholas Bellinger const char *name) 2418c66ac9dbSNicholas Bellinger { 2419c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2420c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 2421c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 2422c66ac9dbSNicholas Bellinger 2423c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 2424c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 2425c66ac9dbSNicholas Bellinger return NULL; 2426c66ac9dbSNicholas Bellinger 2427c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 2428c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 2429c66ac9dbSNicholas Bellinger 2430c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 2431c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2432c66ac9dbSNicholas Bellinger 24336708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 2434c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 2435c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 2436c66ac9dbSNicholas Bellinger 2437c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 2438c66ac9dbSNicholas Bellinger 2439c66ac9dbSNicholas Bellinger } 2440c66ac9dbSNicholas Bellinger 2441c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 2442c66ac9dbSNicholas Bellinger struct config_group *group, 2443c66ac9dbSNicholas Bellinger struct config_item *item) 2444c66ac9dbSNicholas Bellinger { 2445c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 2446c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 2447c66ac9dbSNicholas Bellinger 24486708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 2449c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 2450c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 24511f6fe7cbSNicholas Bellinger /* 24521f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 24531f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 24541f6fe7cbSNicholas Bellinger */ 2455c66ac9dbSNicholas Bellinger config_item_put(item); 2456c66ac9dbSNicholas Bellinger } 2457c66ac9dbSNicholas Bellinger 2458c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 2459c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 2460c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 2461c66ac9dbSNicholas Bellinger }; 2462c66ac9dbSNicholas Bellinger 2463ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_lu_gps_cit = { 2464c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2465c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 2466c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2467c66ac9dbSNicholas Bellinger }; 2468c66ac9dbSNicholas Bellinger 2469c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 2470c66ac9dbSNicholas Bellinger 2471c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2472c66ac9dbSNicholas Bellinger 24732eafd729SChristoph Hellwig static inline struct t10_alua_tg_pt_gp *to_tg_pt_gp(struct config_item *item) 24742eafd729SChristoph Hellwig { 24752eafd729SChristoph Hellwig return container_of(to_config_group(item), struct t10_alua_tg_pt_gp, 24762eafd729SChristoph Hellwig tg_pt_gp_group); 24772eafd729SChristoph Hellwig } 2478c66ac9dbSNicholas Bellinger 24792eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_show(struct config_item *item, 2480c66ac9dbSNicholas Bellinger char *page) 2481c66ac9dbSNicholas Bellinger { 2482c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 2483d19c4643SMike Christie to_tg_pt_gp(item)->tg_pt_gp_alua_access_state); 2484c66ac9dbSNicholas Bellinger } 2485c66ac9dbSNicholas Bellinger 24862eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_state_store(struct config_item *item, 24872eafd729SChristoph Hellwig const char *page, size_t count) 2488c66ac9dbSNicholas Bellinger { 24892eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 24900fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 2491c66ac9dbSNicholas Bellinger unsigned long tmp; 2492c66ac9dbSNicholas Bellinger int new_state, ret; 2493c66ac9dbSNicholas Bellinger 24946708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 2495125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 2496c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 2497c66ac9dbSNicholas Bellinger return -EINVAL; 2498c66ac9dbSNicholas Bellinger } 2499cb0f32e1SMike Christie if (!target_dev_configured(dev)) { 2500f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 2501f1453773SNicholas Bellinger " not configured\n"); 2502f1453773SNicholas Bellinger return -ENODEV; 2503f1453773SNicholas Bellinger } 2504c66ac9dbSNicholas Bellinger 250557103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2506c66ac9dbSNicholas Bellinger if (ret < 0) { 25076708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 2508c66ac9dbSNicholas Bellinger " %s\n", page); 250957103d7fSJingoo Han return ret; 2510c66ac9dbSNicholas Bellinger } 2511c66ac9dbSNicholas Bellinger new_state = (int)tmp; 2512c66ac9dbSNicholas Bellinger 2513125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 2514125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 2515125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 2516c66ac9dbSNicholas Bellinger return -EINVAL; 2517c66ac9dbSNicholas Bellinger } 2518c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 2519c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 2520c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 2521c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 2522c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 2523c66094bfSHannes Reinecke return -EINVAL; 2524c66094bfSHannes Reinecke } 2525c66ac9dbSNicholas Bellinger 25260fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 2527c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 2528c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 2529c66ac9dbSNicholas Bellinger } 2530c66ac9dbSNicholas Bellinger 25312eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_show(struct config_item *item, 2532c66ac9dbSNicholas Bellinger char *page) 2533c66ac9dbSNicholas Bellinger { 25342eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2535c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 2536c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 2537c66ac9dbSNicholas Bellinger } 2538c66ac9dbSNicholas Bellinger 25392eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_status_store( 25402eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2541c66ac9dbSNicholas Bellinger { 25422eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2543c66ac9dbSNicholas Bellinger unsigned long tmp; 2544c66ac9dbSNicholas Bellinger int new_status, ret; 2545c66ac9dbSNicholas Bellinger 25466708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 25476708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2548c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2549c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2550c66ac9dbSNicholas Bellinger return -EINVAL; 2551c66ac9dbSNicholas Bellinger } 2552c66ac9dbSNicholas Bellinger 255357103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2554c66ac9dbSNicholas Bellinger if (ret < 0) { 25556708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2556c66ac9dbSNicholas Bellinger " from %s\n", page); 255757103d7fSJingoo Han return ret; 2558c66ac9dbSNicholas Bellinger } 2559c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2560c66ac9dbSNicholas Bellinger 2561c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2562125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2563125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 25646708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2565c66ac9dbSNicholas Bellinger new_status); 2566c66ac9dbSNicholas Bellinger return -EINVAL; 2567c66ac9dbSNicholas Bellinger } 2568c66ac9dbSNicholas Bellinger 2569c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2570c66ac9dbSNicholas Bellinger return count; 2571c66ac9dbSNicholas Bellinger } 2572c66ac9dbSNicholas Bellinger 25732eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_show(struct config_item *item, 2574c66ac9dbSNicholas Bellinger char *page) 2575c66ac9dbSNicholas Bellinger { 25762eafd729SChristoph Hellwig return core_alua_show_access_type(to_tg_pt_gp(item), page); 2577c66ac9dbSNicholas Bellinger } 2578c66ac9dbSNicholas Bellinger 25792eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_access_type_store(struct config_item *item, 25802eafd729SChristoph Hellwig const char *page, size_t count) 2581c66ac9dbSNicholas Bellinger { 25822eafd729SChristoph Hellwig return core_alua_store_access_type(to_tg_pt_gp(item), page, count); 2583c66ac9dbSNicholas Bellinger } 2584c66ac9dbSNicholas Bellinger 25852eafd729SChristoph Hellwig #define ALUA_SUPPORTED_STATE_ATTR(_name, _bit) \ 25862eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_show( \ 25872eafd729SChristoph Hellwig struct config_item *item, char *p) \ 2588b0a382c5SHannes Reinecke { \ 25892eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 25902eafd729SChristoph Hellwig return sprintf(p, "%d\n", \ 25912eafd729SChristoph Hellwig !!(t->tg_pt_gp_alua_supported_states & _bit)); \ 25922eafd729SChristoph Hellwig } \ 25932eafd729SChristoph Hellwig \ 25942eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_support_##_name##_store( \ 25952eafd729SChristoph Hellwig struct config_item *item, const char *p, size_t c) \ 2596b0a382c5SHannes Reinecke { \ 25972eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *t = to_tg_pt_gp(item); \ 2598b0a382c5SHannes Reinecke unsigned long tmp; \ 2599b0a382c5SHannes Reinecke int ret; \ 2600b0a382c5SHannes Reinecke \ 2601b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2602c0dcafd8SHannes Reinecke pr_err("Unable to do set " #_name " ALUA state on non" \ 2603b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2604b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2605b0a382c5SHannes Reinecke return -EINVAL; \ 2606b0a382c5SHannes Reinecke } \ 2607b0a382c5SHannes Reinecke \ 2608b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2609b0a382c5SHannes Reinecke if (ret < 0) { \ 2610b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2611b0a382c5SHannes Reinecke return -EINVAL; \ 2612b0a382c5SHannes Reinecke } \ 2613b0a382c5SHannes Reinecke if (tmp > 1) { \ 2614b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2615b0a382c5SHannes Reinecke return -EINVAL; \ 2616b0a382c5SHannes Reinecke } \ 26171f0b030cSSebastian Herbszt if (tmp) \ 26182eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states |= _bit; \ 2619b0a382c5SHannes Reinecke else \ 26202eafd729SChristoph Hellwig t->tg_pt_gp_alua_supported_states &= ~_bit; \ 2621b0a382c5SHannes Reinecke \ 2622b0a382c5SHannes Reinecke return c; \ 26236be526c4SHannes Reinecke } 26246be526c4SHannes Reinecke 26252eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(transitioning, ALUA_T_SUP); 26262eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(offline, ALUA_O_SUP); 26272eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(lba_dependent, ALUA_LBD_SUP); 26282eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(unavailable, ALUA_U_SUP); 26292eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(standby, ALUA_S_SUP); 26302eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_optimized, ALUA_AO_SUP); 26312eafd729SChristoph Hellwig ALUA_SUPPORTED_STATE_ATTR(active_nonoptimized, ALUA_AN_SUP); 26326be526c4SHannes Reinecke 26332eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_show( 26342eafd729SChristoph Hellwig struct config_item *item, char *page) 2635c66ac9dbSNicholas Bellinger { 26362eafd729SChristoph Hellwig return sprintf(page, "%d\n", 26372eafd729SChristoph Hellwig to_tg_pt_gp(item)->tg_pt_gp_write_metadata); 2638c66ac9dbSNicholas Bellinger } 2639c66ac9dbSNicholas Bellinger 26402eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_alua_write_metadata_store( 26412eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 2642c66ac9dbSNicholas Bellinger { 26432eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2644c66ac9dbSNicholas Bellinger unsigned long tmp; 2645c66ac9dbSNicholas Bellinger int ret; 2646c66ac9dbSNicholas Bellinger 264757103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2648c66ac9dbSNicholas Bellinger if (ret < 0) { 26496708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 265057103d7fSJingoo Han return ret; 2651c66ac9dbSNicholas Bellinger } 2652c66ac9dbSNicholas Bellinger 2653c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 26546708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2655c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2656c66ac9dbSNicholas Bellinger return -EINVAL; 2657c66ac9dbSNicholas Bellinger } 2658c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2659c66ac9dbSNicholas Bellinger 2660c66ac9dbSNicholas Bellinger return count; 2661c66ac9dbSNicholas Bellinger } 2662c66ac9dbSNicholas Bellinger 26632eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_show(struct config_item *item, 2664c66ac9dbSNicholas Bellinger char *page) 2665c66ac9dbSNicholas Bellinger { 26662eafd729SChristoph Hellwig return core_alua_show_nonop_delay_msecs(to_tg_pt_gp(item), page); 2667c66ac9dbSNicholas Bellinger } 2668c66ac9dbSNicholas Bellinger 26692eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_nonop_delay_msecs_store(struct config_item *item, 26702eafd729SChristoph Hellwig const char *page, size_t count) 2671c66ac9dbSNicholas Bellinger { 26722eafd729SChristoph Hellwig return core_alua_store_nonop_delay_msecs(to_tg_pt_gp(item), page, 26732eafd729SChristoph Hellwig count); 2674c66ac9dbSNicholas Bellinger } 2675c66ac9dbSNicholas Bellinger 26762eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_show(struct config_item *item, 2677c66ac9dbSNicholas Bellinger char *page) 2678c66ac9dbSNicholas Bellinger { 26792eafd729SChristoph Hellwig return core_alua_show_trans_delay_msecs(to_tg_pt_gp(item), page); 2680c66ac9dbSNicholas Bellinger } 2681c66ac9dbSNicholas Bellinger 26822eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_trans_delay_msecs_store(struct config_item *item, 26832eafd729SChristoph Hellwig const char *page, size_t count) 2684c66ac9dbSNicholas Bellinger { 26852eafd729SChristoph Hellwig return core_alua_store_trans_delay_msecs(to_tg_pt_gp(item), page, 26862eafd729SChristoph Hellwig count); 2687c66ac9dbSNicholas Bellinger } 2688c66ac9dbSNicholas Bellinger 26892eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_show( 26902eafd729SChristoph Hellwig struct config_item *item, char *page) 26912eafd729SChristoph Hellwig { 26922eafd729SChristoph Hellwig return core_alua_show_implicit_trans_secs(to_tg_pt_gp(item), page); 26932eafd729SChristoph Hellwig } 2694c66ac9dbSNicholas Bellinger 26952eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_implicit_trans_secs_store( 26962eafd729SChristoph Hellwig struct config_item *item, const char *page, size_t count) 26972eafd729SChristoph Hellwig { 26982eafd729SChristoph Hellwig return core_alua_store_implicit_trans_secs(to_tg_pt_gp(item), page, 26992eafd729SChristoph Hellwig count); 27002eafd729SChristoph Hellwig } 27012eafd729SChristoph Hellwig 27022eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_show(struct config_item *item, 27035b9a4d72SNicholas Bellinger char *page) 27045b9a4d72SNicholas Bellinger { 27052eafd729SChristoph Hellwig return core_alua_show_preferred_bit(to_tg_pt_gp(item), page); 27065b9a4d72SNicholas Bellinger } 27075b9a4d72SNicholas Bellinger 27082eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_preferred_store(struct config_item *item, 27092eafd729SChristoph Hellwig const char *page, size_t count) 27105b9a4d72SNicholas Bellinger { 27112eafd729SChristoph Hellwig return core_alua_store_preferred_bit(to_tg_pt_gp(item), page, count); 27125b9a4d72SNicholas Bellinger } 27135b9a4d72SNicholas Bellinger 27142eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_show(struct config_item *item, 2715c66ac9dbSNicholas Bellinger char *page) 2716c66ac9dbSNicholas Bellinger { 27172eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2718c66ac9dbSNicholas Bellinger 27196708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2720c66ac9dbSNicholas Bellinger return 0; 2721c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2722c66ac9dbSNicholas Bellinger } 2723c66ac9dbSNicholas Bellinger 27242eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_tg_pt_gp_id_store(struct config_item *item, 27252eafd729SChristoph Hellwig const char *page, size_t count) 2726c66ac9dbSNicholas Bellinger { 27272eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2728c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2729c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2730c66ac9dbSNicholas Bellinger int ret; 2731c66ac9dbSNicholas Bellinger 273257103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2733c66ac9dbSNicholas Bellinger if (ret < 0) { 27343d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: invalid value '%s' for tg_pt_gp_id\n", 27353d035237SHannes Reinecke page); 273657103d7fSJingoo Han return ret; 2737c66ac9dbSNicholas Bellinger } 2738c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 27393d035237SHannes Reinecke pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum: 0x0000ffff\n", 27403d035237SHannes Reinecke tg_pt_gp_id); 2741c66ac9dbSNicholas Bellinger return -EINVAL; 2742c66ac9dbSNicholas Bellinger } 2743c66ac9dbSNicholas Bellinger 2744c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2745c66ac9dbSNicholas Bellinger if (ret < 0) 2746c66ac9dbSNicholas Bellinger return -EINVAL; 2747c66ac9dbSNicholas Bellinger 27486708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2749c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2750c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2751c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2752c66ac9dbSNicholas Bellinger 2753c66ac9dbSNicholas Bellinger return count; 2754c66ac9dbSNicholas Bellinger } 2755c66ac9dbSNicholas Bellinger 27562eafd729SChristoph Hellwig static ssize_t target_tg_pt_gp_members_show(struct config_item *item, 2757c66ac9dbSNicholas Bellinger char *page) 2758c66ac9dbSNicholas Bellinger { 27592eafd729SChristoph Hellwig struct t10_alua_tg_pt_gp *tg_pt_gp = to_tg_pt_gp(item); 2760c66ac9dbSNicholas Bellinger struct se_lun *lun; 2761c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2762c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2763c66ac9dbSNicholas Bellinger 2764c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2765c66ac9dbSNicholas Bellinger 2766c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2767adf653f9SChristoph Hellwig list_for_each_entry(lun, &tg_pt_gp->tg_pt_gp_lun_list, 2768adf653f9SChristoph Hellwig lun_tg_pt_gp_link) { 2769adf653f9SChristoph Hellwig struct se_portal_group *tpg = lun->lun_tpg; 2770c66ac9dbSNicholas Bellinger 2771c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 277230c7ca93SDavid Disseldorp "/%s\n", tpg->se_tpg_tfo->fabric_name, 2773e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2774e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2775c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2776c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2777c66ac9dbSNicholas Bellinger 2778c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 27796708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2780c66ac9dbSNicholas Bellinger "_members buffer\n"); 2781c66ac9dbSNicholas Bellinger break; 2782c66ac9dbSNicholas Bellinger } 2783c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2784c66ac9dbSNicholas Bellinger len += cur_len; 2785c66ac9dbSNicholas Bellinger } 2786c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2787c66ac9dbSNicholas Bellinger 2788c66ac9dbSNicholas Bellinger return len; 2789c66ac9dbSNicholas Bellinger } 2790c66ac9dbSNicholas Bellinger 27912eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_state); 27922eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_status); 27932eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_access_type); 27942eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_transitioning); 27952eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_offline); 27962eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_lba_dependent); 27972eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_unavailable); 27982eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_standby); 27992eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_optimized); 28002eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_support_active_nonoptimized); 28012eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, alua_write_metadata); 28022eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, nonop_delay_msecs); 28032eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, trans_delay_msecs); 28042eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, implicit_trans_secs); 28052eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, preferred); 28062eafd729SChristoph Hellwig CONFIGFS_ATTR(target_tg_pt_gp_, tg_pt_gp_id); 28072eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_tg_pt_gp_, members); 2808c66ac9dbSNicholas Bellinger 2809c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 28102eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_state, 28112eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_status, 28122eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_access_type, 28132eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_transitioning, 28142eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_offline, 28152eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_lba_dependent, 28162eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_unavailable, 28172eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_standby, 28182eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_nonoptimized, 28192eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_support_active_optimized, 28202eafd729SChristoph Hellwig &target_tg_pt_gp_attr_alua_write_metadata, 28212eafd729SChristoph Hellwig &target_tg_pt_gp_attr_nonop_delay_msecs, 28222eafd729SChristoph Hellwig &target_tg_pt_gp_attr_trans_delay_msecs, 28232eafd729SChristoph Hellwig &target_tg_pt_gp_attr_implicit_trans_secs, 28242eafd729SChristoph Hellwig &target_tg_pt_gp_attr_preferred, 28252eafd729SChristoph Hellwig &target_tg_pt_gp_attr_tg_pt_gp_id, 28262eafd729SChristoph Hellwig &target_tg_pt_gp_attr_members, 2827c66ac9dbSNicholas Bellinger NULL, 2828c66ac9dbSNicholas Bellinger }; 2829c66ac9dbSNicholas Bellinger 28301f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 28311f6fe7cbSNicholas Bellinger { 28321f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 28331f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 28341f6fe7cbSNicholas Bellinger 28351f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 28361f6fe7cbSNicholas Bellinger } 28371f6fe7cbSNicholas Bellinger 2838c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 28391f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2840c66ac9dbSNicholas Bellinger }; 2841c66ac9dbSNicholas Bellinger 2842ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_tg_pt_gp_cit = { 2843c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2844c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2845c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2846c66ac9dbSNicholas Bellinger }; 2847c66ac9dbSNicholas Bellinger 2848c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2849c66ac9dbSNicholas Bellinger 285072aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2851c66ac9dbSNicholas Bellinger 2852c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2853c66ac9dbSNicholas Bellinger struct config_group *group, 2854c66ac9dbSNicholas Bellinger const char *name) 2855c66ac9dbSNicholas Bellinger { 2856c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2857c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2858c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2859c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2860c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2861c66ac9dbSNicholas Bellinger 28620fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 28636708bb27SAndy Grover if (!tg_pt_gp) 2864c66ac9dbSNicholas Bellinger return NULL; 2865c66ac9dbSNicholas Bellinger 2866c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2867c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2868c66ac9dbSNicholas Bellinger 2869c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2870c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2871c66ac9dbSNicholas Bellinger 28726708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2873c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2874c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2875c66ac9dbSNicholas Bellinger 2876c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2877c66ac9dbSNicholas Bellinger } 2878c66ac9dbSNicholas Bellinger 2879c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2880c66ac9dbSNicholas Bellinger struct config_group *group, 2881c66ac9dbSNicholas Bellinger struct config_item *item) 2882c66ac9dbSNicholas Bellinger { 2883c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2884c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2885c66ac9dbSNicholas Bellinger 28866708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2887c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2888c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 28891f6fe7cbSNicholas Bellinger /* 28901f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 28911f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 28921f6fe7cbSNicholas Bellinger */ 2893c66ac9dbSNicholas Bellinger config_item_put(item); 2894c66ac9dbSNicholas Bellinger } 2895c66ac9dbSNicholas Bellinger 2896c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2897c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2898c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2899c66ac9dbSNicholas Bellinger }; 2900c66ac9dbSNicholas Bellinger 290172aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 2902c66ac9dbSNicholas Bellinger 290372aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2904c66ac9dbSNicholas Bellinger 2905c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2906c66ac9dbSNicholas Bellinger 2907c66ac9dbSNicholas Bellinger /* 2908c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2909c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2910c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2911c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2912c66ac9dbSNicholas Bellinger */ 2913ece550b5SBhumika Goyal static const struct config_item_type target_core_alua_cit = { 2914c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2915c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2916c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2917c66ac9dbSNicholas Bellinger }; 2918c66ac9dbSNicholas Bellinger 2919c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2920c66ac9dbSNicholas Bellinger 2921d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 292212d23384SNicholas Bellinger 292312d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 292412d23384SNicholas Bellinger struct config_group *group, 292512d23384SNicholas Bellinger const char *name) 292612d23384SNicholas Bellinger { 292712d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 292812d23384SNicholas Bellinger } 292912d23384SNicholas Bellinger 293012d23384SNicholas Bellinger static void target_core_stat_rmdir( 293112d23384SNicholas Bellinger struct config_group *group, 293212d23384SNicholas Bellinger struct config_item *item) 293312d23384SNicholas Bellinger { 293412d23384SNicholas Bellinger return; 293512d23384SNicholas Bellinger } 293612d23384SNicholas Bellinger 293712d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 293812d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 293912d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 294012d23384SNicholas Bellinger }; 294112d23384SNicholas Bellinger 2942d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 294312d23384SNicholas Bellinger 2944d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 294512d23384SNicholas Bellinger 2946c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2947c66ac9dbSNicholas Bellinger 2948c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2949c66ac9dbSNicholas Bellinger struct config_group *group, 2950c66ac9dbSNicholas Bellinger const char *name) 2951c66ac9dbSNicholas Bellinger { 2952c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2953c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2954c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 29550a06d430SChristoph Hellwig struct target_backend *tb = hba->backend; 29560fd97ccfSChristoph Hellwig struct se_device *dev; 295712d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2958c66ac9dbSNicholas Bellinger 295912d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 296012d23384SNicholas Bellinger if (ret) 296112d23384SNicholas Bellinger return ERR_PTR(ret); 2962c66ac9dbSNicholas Bellinger 29630fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 29640fd97ccfSChristoph Hellwig if (!dev) 29650fd97ccfSChristoph Hellwig goto out_unlock; 2966c66ac9dbSNicholas Bellinger 29671ae1602dSChristoph Hellwig config_group_init_type_name(&dev->dev_group, name, &tb->tb_dev_cit); 2968c66ac9dbSNicholas Bellinger 29698dc31ff9SMike Christie config_group_init_type_name(&dev->dev_action_group, "action", 29708dc31ff9SMike Christie &tb->tb_dev_action_cit); 29718dc31ff9SMike Christie configfs_add_default_group(&dev->dev_action_group, &dev->dev_group); 29728dc31ff9SMike Christie 29730fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 29740a06d430SChristoph Hellwig &tb->tb_dev_attrib_cit); 29751ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_attrib.da_group, &dev->dev_group); 29761ae1602dSChristoph Hellwig 29770fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 29780a06d430SChristoph Hellwig &tb->tb_dev_pr_cit); 29791ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_pr_group, &dev->dev_group); 29801ae1602dSChristoph Hellwig 29810fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 29820a06d430SChristoph Hellwig &tb->tb_dev_wwn_cit); 29831ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_wwn.t10_wwn_group, 29841ae1602dSChristoph Hellwig &dev->dev_group); 29851ae1602dSChristoph Hellwig 29860fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 29870a06d430SChristoph Hellwig "alua", &tb->tb_dev_alua_tg_pt_gps_cit); 29881ae1602dSChristoph Hellwig configfs_add_default_group(&dev->t10_alua.alua_tg_pt_gps_group, 29891ae1602dSChristoph Hellwig &dev->dev_group); 29901ae1602dSChristoph Hellwig 29910fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 29920a06d430SChristoph Hellwig "statistics", &tb->tb_dev_stat_cit); 29931ae1602dSChristoph Hellwig configfs_add_default_group(&dev->dev_stat_grps.stat_group, 29941ae1602dSChristoph Hellwig &dev->dev_group); 299512d23384SNicholas Bellinger 2996c66ac9dbSNicholas Bellinger /* 299712d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2998c66ac9dbSNicholas Bellinger */ 29990fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 30006708bb27SAndy Grover if (!tg_pt_gp) 30011ae1602dSChristoph Hellwig goto out_free_device; 30020fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 3003c66ac9dbSNicholas Bellinger 3004c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 3005c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 30061ae1602dSChristoph Hellwig configfs_add_default_group(&tg_pt_gp->tg_pt_gp_group, 30071ae1602dSChristoph Hellwig &dev->t10_alua.alua_tg_pt_gps_group); 30081ae1602dSChristoph Hellwig 300912d23384SNicholas Bellinger /* 301012d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 301112d23384SNicholas Bellinger */ 30120fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 3013c66ac9dbSNicholas Bellinger 3014c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 30151ae1602dSChristoph Hellwig return &dev->dev_group; 30160fd97ccfSChristoph Hellwig 30170fd97ccfSChristoph Hellwig out_free_device: 30180fd97ccfSChristoph Hellwig target_free_device(dev); 30190fd97ccfSChristoph Hellwig out_unlock: 3020c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 302112d23384SNicholas Bellinger return ERR_PTR(errno); 3022c66ac9dbSNicholas Bellinger } 3023c66ac9dbSNicholas Bellinger 3024c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 3025c66ac9dbSNicholas Bellinger struct config_group *group, 3026c66ac9dbSNicholas Bellinger struct config_item *item) 3027c66ac9dbSNicholas Bellinger { 30280fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 30290fd97ccfSChristoph Hellwig struct se_device *dev = 30300fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 3031c66ac9dbSNicholas Bellinger struct se_hba *hba; 3032c66ac9dbSNicholas Bellinger 30330fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 3034c66ac9dbSNicholas Bellinger 30351f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 3036c66ac9dbSNicholas Bellinger 30371ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->dev_stat_grps.stat_group); 30381ae1602dSChristoph Hellwig configfs_remove_default_groups(&dev->t10_alua.alua_tg_pt_gps_group); 303912d23384SNicholas Bellinger 30401f6fe7cbSNicholas Bellinger /* 30411f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 30421f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 30431f6fe7cbSNicholas Bellinger */ 30440fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 3045c66ac9dbSNicholas Bellinger 30461ae1602dSChristoph Hellwig configfs_remove_default_groups(dev_cg); 30471ae1602dSChristoph Hellwig 30481f6fe7cbSNicholas Bellinger /* 30490fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 30501f6fe7cbSNicholas Bellinger */ 3051c66ac9dbSNicholas Bellinger config_item_put(item); 3052c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 3053c66ac9dbSNicholas Bellinger } 3054c66ac9dbSNicholas Bellinger 3055c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 3056c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 3057c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 3058c66ac9dbSNicholas Bellinger }; 3059c66ac9dbSNicholas Bellinger 3060c66ac9dbSNicholas Bellinger 30612eafd729SChristoph Hellwig static inline struct se_hba *to_hba(struct config_item *item) 3062c66ac9dbSNicholas Bellinger { 30632eafd729SChristoph Hellwig return container_of(to_config_group(item), struct se_hba, hba_group); 30642eafd729SChristoph Hellwig } 30652eafd729SChristoph Hellwig 30662eafd729SChristoph Hellwig static ssize_t target_hba_info_show(struct config_item *item, char *page) 30672eafd729SChristoph Hellwig { 30682eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 30692eafd729SChristoph Hellwig 3070c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 30710a06d430SChristoph Hellwig hba->hba_id, hba->backend->ops->name, 3072ce8dd25dSChristoph Hellwig TARGET_CORE_VERSION); 3073c66ac9dbSNicholas Bellinger } 3074c66ac9dbSNicholas Bellinger 30752eafd729SChristoph Hellwig static ssize_t target_hba_mode_show(struct config_item *item, char *page) 3076c66ac9dbSNicholas Bellinger { 30772eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3078c66ac9dbSNicholas Bellinger int hba_mode = 0; 3079c66ac9dbSNicholas Bellinger 3080c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 3081c66ac9dbSNicholas Bellinger hba_mode = 1; 3082c66ac9dbSNicholas Bellinger 3083c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 3084c66ac9dbSNicholas Bellinger } 3085c66ac9dbSNicholas Bellinger 30862eafd729SChristoph Hellwig static ssize_t target_hba_mode_store(struct config_item *item, 3087c66ac9dbSNicholas Bellinger const char *page, size_t count) 3088c66ac9dbSNicholas Bellinger { 30892eafd729SChristoph Hellwig struct se_hba *hba = to_hba(item); 3090c66ac9dbSNicholas Bellinger unsigned long mode_flag; 3091c66ac9dbSNicholas Bellinger int ret; 3092c66ac9dbSNicholas Bellinger 30930a06d430SChristoph Hellwig if (hba->backend->ops->pmode_enable_hba == NULL) 3094c66ac9dbSNicholas Bellinger return -EINVAL; 3095c66ac9dbSNicholas Bellinger 309657103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 3097c66ac9dbSNicholas Bellinger if (ret < 0) { 30986708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 309957103d7fSJingoo Han return ret; 3100c66ac9dbSNicholas Bellinger } 3101c66ac9dbSNicholas Bellinger 31020fd97ccfSChristoph Hellwig if (hba->dev_count) { 31036708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 3104c66ac9dbSNicholas Bellinger return -EINVAL; 3105c66ac9dbSNicholas Bellinger } 3106c66ac9dbSNicholas Bellinger 31070a06d430SChristoph Hellwig ret = hba->backend->ops->pmode_enable_hba(hba, mode_flag); 3108c66ac9dbSNicholas Bellinger if (ret < 0) 3109c66ac9dbSNicholas Bellinger return -EINVAL; 3110c66ac9dbSNicholas Bellinger if (ret > 0) 3111c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 3112c66ac9dbSNicholas Bellinger else if (ret == 0) 3113c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 3114c66ac9dbSNicholas Bellinger 3115c66ac9dbSNicholas Bellinger return count; 3116c66ac9dbSNicholas Bellinger } 3117c66ac9dbSNicholas Bellinger 31182eafd729SChristoph Hellwig CONFIGFS_ATTR_RO(target_, hba_info); 31192eafd729SChristoph Hellwig CONFIGFS_ATTR(target_, hba_mode); 3120c66ac9dbSNicholas Bellinger 31211f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 31221f6fe7cbSNicholas Bellinger { 31231f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 31241f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 31251f6fe7cbSNicholas Bellinger core_delete_hba(hba); 31261f6fe7cbSNicholas Bellinger } 31271f6fe7cbSNicholas Bellinger 3128c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 31292eafd729SChristoph Hellwig &target_attr_hba_info, 31302eafd729SChristoph Hellwig &target_attr_hba_mode, 3131c66ac9dbSNicholas Bellinger NULL, 3132c66ac9dbSNicholas Bellinger }; 3133c66ac9dbSNicholas Bellinger 3134c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 31351f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 3136c66ac9dbSNicholas Bellinger }; 3137c66ac9dbSNicholas Bellinger 3138ece550b5SBhumika Goyal static const struct config_item_type target_core_hba_cit = { 3139c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 3140c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 3141c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 3142c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3143c66ac9dbSNicholas Bellinger }; 3144c66ac9dbSNicholas Bellinger 3145c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 3146c66ac9dbSNicholas Bellinger struct config_group *group, 3147c66ac9dbSNicholas Bellinger const char *name) 3148c66ac9dbSNicholas Bellinger { 3149c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 3150c66ac9dbSNicholas Bellinger struct se_hba *hba; 3151c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 3152c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 3153c66ac9dbSNicholas Bellinger int ret; 3154c66ac9dbSNicholas Bellinger 3155c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 315660d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 31576708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 3158c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 3159c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 3160c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 3161c66ac9dbSNicholas Bellinger } 3162c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 3163c66ac9dbSNicholas Bellinger 3164c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 31656708bb27SAndy Grover if (!str) { 31666708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 3167c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 3168c66ac9dbSNicholas Bellinger } 3169c66ac9dbSNicholas Bellinger se_plugin_str = buf; 3170c66ac9dbSNicholas Bellinger /* 3171c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 3172c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 3173c66ac9dbSNicholas Bellinger */ 3174c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 31756708bb27SAndy Grover if (str2) { 3176c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 3177c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 3178c66ac9dbSNicholas Bellinger str = str2; 3179c66ac9dbSNicholas Bellinger } else { 3180c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 3181c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 3182c66ac9dbSNicholas Bellinger } 3183c66ac9dbSNicholas Bellinger 318457103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 3185c66ac9dbSNicholas Bellinger if (ret < 0) { 318657103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 3187c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 318857103d7fSJingoo Han return ERR_PTR(ret); 3189c66ac9dbSNicholas Bellinger } 3190c66ac9dbSNicholas Bellinger /* 3191c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 3192c66ac9dbSNicholas Bellinger */ 3193dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 3194c66ac9dbSNicholas Bellinger 3195c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 3196c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 3197c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 3198c66ac9dbSNicholas Bellinger 3199c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 3200c66ac9dbSNicholas Bellinger &target_core_hba_cit); 3201c66ac9dbSNicholas Bellinger 3202c66ac9dbSNicholas Bellinger return &hba->hba_group; 3203c66ac9dbSNicholas Bellinger } 3204c66ac9dbSNicholas Bellinger 3205c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 3206c66ac9dbSNicholas Bellinger struct config_group *group, 3207c66ac9dbSNicholas Bellinger struct config_item *item) 3208c66ac9dbSNicholas Bellinger { 32091f6fe7cbSNicholas Bellinger /* 32101f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 32111f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 32121f6fe7cbSNicholas Bellinger */ 3213c66ac9dbSNicholas Bellinger config_item_put(item); 3214c66ac9dbSNicholas Bellinger } 3215c66ac9dbSNicholas Bellinger 3216c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 3217c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 3218c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 3219c66ac9dbSNicholas Bellinger }; 3220c66ac9dbSNicholas Bellinger 3221ece550b5SBhumika Goyal static const struct config_item_type target_core_cit = { 3222c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 3223c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 3224c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 3225c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 3226c66ac9dbSNicholas Bellinger }; 3227c66ac9dbSNicholas Bellinger 3228c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 3229c66ac9dbSNicholas Bellinger 32300a06d430SChristoph Hellwig void target_setup_backend_cits(struct target_backend *tb) 323173112edcSNicholas Bellinger { 32320a06d430SChristoph Hellwig target_core_setup_dev_cit(tb); 32338dc31ff9SMike Christie target_core_setup_dev_action_cit(tb); 32340a06d430SChristoph Hellwig target_core_setup_dev_attrib_cit(tb); 32350a06d430SChristoph Hellwig target_core_setup_dev_pr_cit(tb); 32360a06d430SChristoph Hellwig target_core_setup_dev_wwn_cit(tb); 32370a06d430SChristoph Hellwig target_core_setup_dev_alua_tg_pt_gps_cit(tb); 32380a06d430SChristoph Hellwig target_core_setup_dev_stat_cit(tb); 323973112edcSNicholas Bellinger } 324073112edcSNicholas Bellinger 324178a6295cSLee Duncan static void target_init_dbroot(void) 324278a6295cSLee Duncan { 324378a6295cSLee Duncan struct file *fp; 324478a6295cSLee Duncan 324578a6295cSLee Duncan snprintf(db_root_stage, DB_ROOT_LEN, DB_ROOT_PREFERRED); 324678a6295cSLee Duncan fp = filp_open(db_root_stage, O_RDONLY, 0); 324778a6295cSLee Duncan if (IS_ERR(fp)) { 324878a6295cSLee Duncan pr_err("db_root: cannot open: %s\n", db_root_stage); 324978a6295cSLee Duncan return; 325078a6295cSLee Duncan } 325178a6295cSLee Duncan if (!S_ISDIR(file_inode(fp)->i_mode)) { 325278a6295cSLee Duncan filp_close(fp, NULL); 325378a6295cSLee Duncan pr_err("db_root: not a valid directory: %s\n", db_root_stage); 325478a6295cSLee Duncan return; 325578a6295cSLee Duncan } 325678a6295cSLee Duncan filp_close(fp, NULL); 325778a6295cSLee Duncan 325878a6295cSLee Duncan strncpy(db_root, db_root_stage, DB_ROOT_LEN); 325978a6295cSLee Duncan pr_debug("Target_Core_ConfigFS: db_root set to %s\n", db_root); 326078a6295cSLee Duncan } 326178a6295cSLee Duncan 326254550fabSAxel Lin static int __init target_core_init_configfs(void) 3263c66ac9dbSNicholas Bellinger { 3264d588cf8fSChristoph Hellwig struct configfs_subsystem *subsys = &target_core_fabrics; 3265c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 3266c66ac9dbSNicholas Bellinger int ret; 3267c66ac9dbSNicholas Bellinger 32686708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 3269c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 3270c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 3271c66ac9dbSNicholas Bellinger 3272c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 3273c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 3274c66ac9dbSNicholas Bellinger 3275e3d6f909SAndy Grover ret = init_se_kmem_caches(); 3276c66ac9dbSNicholas Bellinger if (ret < 0) 3277e3d6f909SAndy Grover return ret; 3278c66ac9dbSNicholas Bellinger /* 3279c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 3280c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 3281c66ac9dbSNicholas Bellinger */ 32821ae1602dSChristoph Hellwig config_group_init_type_name(&target_core_hbagroup, "core", 32831ae1602dSChristoph Hellwig &target_core_cit); 32841ae1602dSChristoph Hellwig configfs_add_default_group(&target_core_hbagroup, &subsys->su_group); 3285c66ac9dbSNicholas Bellinger 3286c66ac9dbSNicholas Bellinger /* 3287c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 3288c66ac9dbSNicholas Bellinger */ 32891ae1602dSChristoph Hellwig config_group_init_type_name(&alua_group, "alua", &target_core_alua_cit); 32901ae1602dSChristoph Hellwig configfs_add_default_group(&alua_group, &target_core_hbagroup); 32911ae1602dSChristoph Hellwig 3292c66ac9dbSNicholas Bellinger /* 3293c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 3294c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 3295c66ac9dbSNicholas Bellinger */ 32961ae1602dSChristoph Hellwig config_group_init_type_name(&alua_lu_gps_group, "lu_gps", 32971ae1602dSChristoph Hellwig &target_core_alua_lu_gps_cit); 32981ae1602dSChristoph Hellwig configfs_add_default_group(&alua_lu_gps_group, &alua_group); 3299c66ac9dbSNicholas Bellinger 3300c66ac9dbSNicholas Bellinger /* 3301c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 3302c66ac9dbSNicholas Bellinger */ 3303c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 330437bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 330537bb7899SPeter Senna Tschudin ret = -ENOMEM; 3306c66ac9dbSNicholas Bellinger goto out_global; 330737bb7899SPeter Senna Tschudin } 3308c66ac9dbSNicholas Bellinger 3309c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 3310c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 33111ae1602dSChristoph Hellwig configfs_add_default_group(&lu_gp->lu_gp_group, &alua_lu_gps_group); 33121ae1602dSChristoph Hellwig 3313e3d6f909SAndy Grover default_lu_gp = lu_gp; 33141ae1602dSChristoph Hellwig 3315c66ac9dbSNicholas Bellinger /* 3316c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 3317c66ac9dbSNicholas Bellinger */ 3318c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 3319c66ac9dbSNicholas Bellinger if (ret < 0) { 33206708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 3321c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 3322c66ac9dbSNicholas Bellinger goto out_global; 3323c66ac9dbSNicholas Bellinger } 33246708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 3325ce8dd25dSChristoph Hellwig " Infrastructure: "TARGET_CORE_VERSION" on %s/%s" 3326c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 3327c66ac9dbSNicholas Bellinger /* 3328c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 3329c66ac9dbSNicholas Bellinger */ 3330c66ac9dbSNicholas Bellinger ret = rd_module_init(); 3331c66ac9dbSNicholas Bellinger if (ret < 0) 3332c66ac9dbSNicholas Bellinger goto out; 3333c66ac9dbSNicholas Bellinger 33340d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 33350d0f9dfbSRoland Dreier if (ret < 0) 3336c66ac9dbSNicholas Bellinger goto out; 3337c66ac9dbSNicholas Bellinger 3338f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 3339f99715acSNicholas Bellinger if (ret < 0) 3340f99715acSNicholas Bellinger goto out; 3341f99715acSNicholas Bellinger 334278a6295cSLee Duncan target_init_dbroot(); 334378a6295cSLee Duncan 3344c66ac9dbSNicholas Bellinger return 0; 3345c66ac9dbSNicholas Bellinger 3346c66ac9dbSNicholas Bellinger out: 3347c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 3348c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3349c66ac9dbSNicholas Bellinger rd_module_exit(); 3350c66ac9dbSNicholas Bellinger out_global: 3351e3d6f909SAndy Grover if (default_lu_gp) { 3352e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3353e3d6f909SAndy Grover default_lu_gp = NULL; 3354c66ac9dbSNicholas Bellinger } 3355e3d6f909SAndy Grover release_se_kmem_caches(); 3356e3d6f909SAndy Grover return ret; 3357c66ac9dbSNicholas Bellinger } 3358c66ac9dbSNicholas Bellinger 335954550fabSAxel Lin static void __exit target_core_exit_configfs(void) 3360c66ac9dbSNicholas Bellinger { 33611ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_lu_gps_group); 33621ae1602dSChristoph Hellwig configfs_remove_default_groups(&alua_group); 33631ae1602dSChristoph Hellwig configfs_remove_default_groups(&target_core_hbagroup); 3364c66ac9dbSNicholas Bellinger 33657c2bf6e9SNicholas Bellinger /* 33667c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 33677c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 33687c2bf6e9SNicholas Bellinger */ 3369d588cf8fSChristoph Hellwig configfs_unregister_subsystem(&target_core_fabrics); 3370c66ac9dbSNicholas Bellinger 3371e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3372e3d6f909SAndy Grover default_lu_gp = NULL; 33737c2bf6e9SNicholas Bellinger 33746708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3375c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3376c66ac9dbSNicholas Bellinger 3377c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3378c66ac9dbSNicholas Bellinger rd_module_exit(); 3379f99715acSNicholas Bellinger target_xcopy_release_pt(); 3380e3d6f909SAndy Grover release_se_kmem_caches(); 3381c66ac9dbSNicholas Bellinger } 3382c66ac9dbSNicholas Bellinger 3383c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3384c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3385c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3386c66ac9dbSNicholas Bellinger 3387c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3388c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3389