1c66ac9dbSNicholas Bellinger /******************************************************************************* 2c66ac9dbSNicholas Bellinger * Filename: target_core_configfs.c 3c66ac9dbSNicholas Bellinger * 4c66ac9dbSNicholas Bellinger * This file contains ConfigFS logic for the Generic Target Engine project. 5c66ac9dbSNicholas Bellinger * 64c76251eSNicholas Bellinger * (c) Copyright 2008-2013 Datera, Inc. 7c66ac9dbSNicholas Bellinger * 8c66ac9dbSNicholas Bellinger * Nicholas A. Bellinger <nab@kernel.org> 9c66ac9dbSNicholas Bellinger * 10c66ac9dbSNicholas Bellinger * based on configfs Copyright (C) 2005 Oracle. All rights reserved. 11c66ac9dbSNicholas Bellinger * 12c66ac9dbSNicholas Bellinger * This program is free software; you can redistribute it and/or modify 13c66ac9dbSNicholas Bellinger * it under the terms of the GNU General Public License as published by 14c66ac9dbSNicholas Bellinger * the Free Software Foundation; either version 2 of the License, or 15c66ac9dbSNicholas Bellinger * (at your option) any later version. 16c66ac9dbSNicholas Bellinger * 17c66ac9dbSNicholas Bellinger * This program is distributed in the hope that it will be useful, 18c66ac9dbSNicholas Bellinger * but WITHOUT ANY WARRANTY; without even the implied warranty of 19c66ac9dbSNicholas Bellinger * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20c66ac9dbSNicholas Bellinger * GNU General Public License for more details. 21c66ac9dbSNicholas Bellinger ****************************************************************************/ 22c66ac9dbSNicholas Bellinger 23c66ac9dbSNicholas Bellinger #include <linux/module.h> 24c66ac9dbSNicholas Bellinger #include <linux/moduleparam.h> 25c66ac9dbSNicholas Bellinger #include <generated/utsrelease.h> 26c66ac9dbSNicholas Bellinger #include <linux/utsname.h> 27c66ac9dbSNicholas Bellinger #include <linux/init.h> 28c66ac9dbSNicholas Bellinger #include <linux/fs.h> 29c66ac9dbSNicholas Bellinger #include <linux/namei.h> 30c66ac9dbSNicholas Bellinger #include <linux/slab.h> 31c66ac9dbSNicholas Bellinger #include <linux/types.h> 32c66ac9dbSNicholas Bellinger #include <linux/delay.h> 33c66ac9dbSNicholas Bellinger #include <linux/unistd.h> 34c66ac9dbSNicholas Bellinger #include <linux/string.h> 35c66ac9dbSNicholas Bellinger #include <linux/parser.h> 36c66ac9dbSNicholas Bellinger #include <linux/syscalls.h> 37c66ac9dbSNicholas Bellinger #include <linux/configfs.h> 38e3d6f909SAndy Grover #include <linux/spinlock.h> 39c66ac9dbSNicholas Bellinger 40c66ac9dbSNicholas Bellinger #include <target/target_core_base.h> 41c4795fb2SChristoph Hellwig #include <target/target_core_backend.h> 42c4795fb2SChristoph Hellwig #include <target/target_core_fabric.h> 43c66ac9dbSNicholas Bellinger #include <target/target_core_fabric_configfs.h> 44c66ac9dbSNicholas Bellinger #include <target/target_core_configfs.h> 45c66ac9dbSNicholas Bellinger #include <target/configfs_macros.h> 46c66ac9dbSNicholas Bellinger 47e26d99aeSChristoph Hellwig #include "target_core_internal.h" 48c66ac9dbSNicholas Bellinger #include "target_core_alua.h" 49c66ac9dbSNicholas Bellinger #include "target_core_pr.h" 50c66ac9dbSNicholas Bellinger #include "target_core_rd.h" 51f99715acSNicholas Bellinger #include "target_core_xcopy.h" 52c66ac9dbSNicholas Bellinger 5373112edcSNicholas Bellinger #define TB_CIT_SETUP(_name, _item_ops, _group_ops, _attrs) \ 5473112edcSNicholas Bellinger static void target_core_setup_##_name##_cit(struct se_subsystem_api *sa) \ 5573112edcSNicholas Bellinger { \ 5673112edcSNicholas Bellinger struct target_backend_cits *tbc = &sa->tb_cits; \ 5773112edcSNicholas Bellinger struct config_item_type *cit = &tbc->tb_##_name##_cit; \ 5873112edcSNicholas Bellinger \ 5973112edcSNicholas Bellinger cit->ct_item_ops = _item_ops; \ 6073112edcSNicholas Bellinger cit->ct_group_ops = _group_ops; \ 6173112edcSNicholas Bellinger cit->ct_attrs = _attrs; \ 6273112edcSNicholas Bellinger cit->ct_owner = sa->owner; \ 6373112edcSNicholas Bellinger pr_debug("Setup generic %s\n", __stringify(_name)); \ 6473112edcSNicholas Bellinger } 6573112edcSNicholas Bellinger 66e3d6f909SAndy Grover extern struct t10_alua_lu_gp *default_lu_gp; 67e3d6f909SAndy Grover 68d0f474e5SRoland Dreier static LIST_HEAD(g_tf_list); 69d0f474e5SRoland Dreier static DEFINE_MUTEX(g_tf_lock); 70c66ac9dbSNicholas Bellinger 71c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute { 72c66ac9dbSNicholas Bellinger struct configfs_attribute attr; 73c66ac9dbSNicholas Bellinger ssize_t (*show)(void *, char *); 74c66ac9dbSNicholas Bellinger ssize_t (*store)(void *, const char *, size_t); 75c66ac9dbSNicholas Bellinger }; 76c66ac9dbSNicholas Bellinger 77e3d6f909SAndy Grover static struct config_group target_core_hbagroup; 78e3d6f909SAndy Grover static struct config_group alua_group; 79e3d6f909SAndy Grover static struct config_group alua_lu_gps_group; 80e3d6f909SAndy Grover 81c66ac9dbSNicholas Bellinger static inline struct se_hba * 82c66ac9dbSNicholas Bellinger item_to_hba(struct config_item *item) 83c66ac9dbSNicholas Bellinger { 84c66ac9dbSNicholas Bellinger return container_of(to_config_group(item), struct se_hba, hba_group); 85c66ac9dbSNicholas Bellinger } 86c66ac9dbSNicholas Bellinger 87c66ac9dbSNicholas Bellinger /* 88c66ac9dbSNicholas Bellinger * Attributes for /sys/kernel/config/target/ 89c66ac9dbSNicholas Bellinger */ 90c66ac9dbSNicholas Bellinger static ssize_t target_core_attr_show(struct config_item *item, 91c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 92c66ac9dbSNicholas Bellinger char *page) 93c66ac9dbSNicholas Bellinger { 94c66ac9dbSNicholas Bellinger return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" 95c66ac9dbSNicholas Bellinger " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, 96c66ac9dbSNicholas Bellinger utsname()->sysname, utsname()->machine); 97c66ac9dbSNicholas Bellinger } 98c66ac9dbSNicholas Bellinger 99c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_fabric_item_ops = { 100c66ac9dbSNicholas Bellinger .show_attribute = target_core_attr_show, 101c66ac9dbSNicholas Bellinger }; 102c66ac9dbSNicholas Bellinger 103c66ac9dbSNicholas Bellinger static struct configfs_attribute target_core_item_attr_version = { 104c66ac9dbSNicholas Bellinger .ca_owner = THIS_MODULE, 105c66ac9dbSNicholas Bellinger .ca_name = "version", 106c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO, 107c66ac9dbSNicholas Bellinger }; 108c66ac9dbSNicholas Bellinger 109c66ac9dbSNicholas Bellinger static struct target_fabric_configfs *target_core_get_fabric( 110c66ac9dbSNicholas Bellinger const char *name) 111c66ac9dbSNicholas Bellinger { 112c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 113c66ac9dbSNicholas Bellinger 1146708bb27SAndy Grover if (!name) 115c66ac9dbSNicholas Bellinger return NULL; 116c66ac9dbSNicholas Bellinger 117c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 118c66ac9dbSNicholas Bellinger list_for_each_entry(tf, &g_tf_list, tf_list) { 1196708bb27SAndy Grover if (!strcmp(tf->tf_name, name)) { 120c66ac9dbSNicholas Bellinger atomic_inc(&tf->tf_access_cnt); 121c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 122c66ac9dbSNicholas Bellinger return tf; 123c66ac9dbSNicholas Bellinger } 124c66ac9dbSNicholas Bellinger } 125c66ac9dbSNicholas Bellinger mutex_unlock(&g_tf_lock); 126c66ac9dbSNicholas Bellinger 127c66ac9dbSNicholas Bellinger return NULL; 128c66ac9dbSNicholas Bellinger } 129c66ac9dbSNicholas Bellinger 130c66ac9dbSNicholas Bellinger /* 131c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->make_group() 132c66ac9dbSNicholas Bellinger */ 133c66ac9dbSNicholas Bellinger static struct config_group *target_core_register_fabric( 134c66ac9dbSNicholas Bellinger struct config_group *group, 135c66ac9dbSNicholas Bellinger const char *name) 136c66ac9dbSNicholas Bellinger { 137c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf; 138c66ac9dbSNicholas Bellinger int ret; 139c66ac9dbSNicholas Bellinger 1406708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" 141c66ac9dbSNicholas Bellinger " %s\n", group, name); 142e7b7af6eSRoland Dreier 143e7b7af6eSRoland Dreier tf = target_core_get_fabric(name); 144e7b7af6eSRoland Dreier if (!tf) { 14562554910SNicholas Bellinger pr_debug("target_core_register_fabric() trying autoload for %s\n", 146e7b7af6eSRoland Dreier name); 147e7b7af6eSRoland Dreier 148c66ac9dbSNicholas Bellinger /* 149c66ac9dbSNicholas Bellinger * Below are some hardcoded request_module() calls to automatically 150c66ac9dbSNicholas Bellinger * local fabric modules when the following is called: 151c66ac9dbSNicholas Bellinger * 152c66ac9dbSNicholas Bellinger * mkdir -p /sys/kernel/config/target/$MODULE_NAME 153c66ac9dbSNicholas Bellinger * 154c66ac9dbSNicholas Bellinger * Note that this does not limit which TCM fabric module can be 155c66ac9dbSNicholas Bellinger * registered, but simply provids auto loading logic for modules with 156c66ac9dbSNicholas Bellinger * mkdir(2) system calls with known TCM fabric modules. 157c66ac9dbSNicholas Bellinger */ 158e7b7af6eSRoland Dreier 1596708bb27SAndy Grover if (!strncmp(name, "iscsi", 5)) { 160c66ac9dbSNicholas Bellinger /* 161c66ac9dbSNicholas Bellinger * Automatically load the LIO Target fabric module when the 162c66ac9dbSNicholas Bellinger * following is called: 163c66ac9dbSNicholas Bellinger * 164c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/iscsi 165c66ac9dbSNicholas Bellinger */ 166c66ac9dbSNicholas Bellinger ret = request_module("iscsi_target_mod"); 167c66ac9dbSNicholas Bellinger if (ret < 0) { 16862554910SNicholas Bellinger pr_debug("request_module() failed for" 169c66ac9dbSNicholas Bellinger " iscsi_target_mod.ko: %d\n", ret); 170c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 171c66ac9dbSNicholas Bellinger } 1726708bb27SAndy Grover } else if (!strncmp(name, "loopback", 8)) { 173c66ac9dbSNicholas Bellinger /* 174c66ac9dbSNicholas Bellinger * Automatically load the tcm_loop fabric module when the 175c66ac9dbSNicholas Bellinger * following is called: 176c66ac9dbSNicholas Bellinger * 177c66ac9dbSNicholas Bellinger * mkdir -p $CONFIGFS/target/loopback 178c66ac9dbSNicholas Bellinger */ 179c66ac9dbSNicholas Bellinger ret = request_module("tcm_loop"); 180c66ac9dbSNicholas Bellinger if (ret < 0) { 18162554910SNicholas Bellinger pr_debug("request_module() failed for" 182c66ac9dbSNicholas Bellinger " tcm_loop.ko: %d\n", ret); 183c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 184c66ac9dbSNicholas Bellinger } 185c66ac9dbSNicholas Bellinger } 186c66ac9dbSNicholas Bellinger 187c66ac9dbSNicholas Bellinger tf = target_core_get_fabric(name); 188e7b7af6eSRoland Dreier } 189e7b7af6eSRoland Dreier 1906708bb27SAndy Grover if (!tf) { 19162554910SNicholas Bellinger pr_debug("target_core_get_fabric() failed for %s\n", 192c66ac9dbSNicholas Bellinger name); 193c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 194c66ac9dbSNicholas Bellinger } 1956708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" 196c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 197c66ac9dbSNicholas Bellinger /* 198c66ac9dbSNicholas Bellinger * On a successful target_core_get_fabric() look, the returned 199c66ac9dbSNicholas Bellinger * struct target_fabric_configfs *tf will contain a usage reference. 200c66ac9dbSNicholas Bellinger */ 2016708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", 202d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 203c66ac9dbSNicholas Bellinger 204c66ac9dbSNicholas Bellinger tf->tf_group.default_groups = tf->tf_default_groups; 205c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[0] = &tf->tf_disc_group; 206c66ac9dbSNicholas Bellinger tf->tf_group.default_groups[1] = NULL; 207c66ac9dbSNicholas Bellinger 208c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_group, name, 209d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_wwn_cit); 210c66ac9dbSNicholas Bellinger config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", 211d80e224dSAndy Grover &tf->tf_cit_tmpl.tfc_discovery_cit); 212c66ac9dbSNicholas Bellinger 2136708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" 214c66ac9dbSNicholas Bellinger " %s\n", tf->tf_group.cg_item.ci_name); 215c66ac9dbSNicholas Bellinger tf->tf_fabric = &tf->tf_group.cg_item; 2166708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" 217c66ac9dbSNicholas Bellinger " for %s\n", name); 218c66ac9dbSNicholas Bellinger 219c66ac9dbSNicholas Bellinger return &tf->tf_group; 220c66ac9dbSNicholas Bellinger } 221c66ac9dbSNicholas Bellinger 222c66ac9dbSNicholas Bellinger /* 223c66ac9dbSNicholas Bellinger * Called from struct target_core_group_ops->drop_item() 224c66ac9dbSNicholas Bellinger */ 225c66ac9dbSNicholas Bellinger static void target_core_deregister_fabric( 226c66ac9dbSNicholas Bellinger struct config_group *group, 227c66ac9dbSNicholas Bellinger struct config_item *item) 228c66ac9dbSNicholas Bellinger { 229c66ac9dbSNicholas Bellinger struct target_fabric_configfs *tf = container_of( 230c66ac9dbSNicholas Bellinger to_config_group(item), struct target_fabric_configfs, tf_group); 231c66ac9dbSNicholas Bellinger struct config_group *tf_group; 232c66ac9dbSNicholas Bellinger struct config_item *df_item; 233c66ac9dbSNicholas Bellinger int i; 234c66ac9dbSNicholas Bellinger 2356708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" 236c66ac9dbSNicholas Bellinger " tf list\n", config_item_name(item)); 237c66ac9dbSNicholas Bellinger 2386708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" 239c66ac9dbSNicholas Bellinger " %s\n", tf->tf_name); 240c66ac9dbSNicholas Bellinger atomic_dec(&tf->tf_access_cnt); 241c66ac9dbSNicholas Bellinger 2426708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" 243c66ac9dbSNicholas Bellinger " tf->tf_fabric for %s\n", tf->tf_name); 244c66ac9dbSNicholas Bellinger tf->tf_fabric = NULL; 245c66ac9dbSNicholas Bellinger 2466708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" 247c66ac9dbSNicholas Bellinger " %s\n", config_item_name(item)); 248c66ac9dbSNicholas Bellinger 249c66ac9dbSNicholas Bellinger tf_group = &tf->tf_group; 250c66ac9dbSNicholas Bellinger for (i = 0; tf_group->default_groups[i]; i++) { 251c66ac9dbSNicholas Bellinger df_item = &tf_group->default_groups[i]->cg_item; 252c66ac9dbSNicholas Bellinger tf_group->default_groups[i] = NULL; 253c66ac9dbSNicholas Bellinger config_item_put(df_item); 254c66ac9dbSNicholas Bellinger } 255c66ac9dbSNicholas Bellinger config_item_put(item); 256c66ac9dbSNicholas Bellinger } 257c66ac9dbSNicholas Bellinger 258c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_fabric_group_ops = { 259c66ac9dbSNicholas Bellinger .make_group = &target_core_register_fabric, 260c66ac9dbSNicholas Bellinger .drop_item = &target_core_deregister_fabric, 261c66ac9dbSNicholas Bellinger }; 262c66ac9dbSNicholas Bellinger 263c66ac9dbSNicholas Bellinger /* 264c66ac9dbSNicholas Bellinger * All item attributes appearing in /sys/kernel/target/ appear here. 265c66ac9dbSNicholas Bellinger */ 266c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_fabric_item_attrs[] = { 267c66ac9dbSNicholas Bellinger &target_core_item_attr_version, 268c66ac9dbSNicholas Bellinger NULL, 269c66ac9dbSNicholas Bellinger }; 270c66ac9dbSNicholas Bellinger 271c66ac9dbSNicholas Bellinger /* 272c66ac9dbSNicholas Bellinger * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ 273c66ac9dbSNicholas Bellinger */ 274c66ac9dbSNicholas Bellinger static struct config_item_type target_core_fabrics_item = { 275c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_fabric_item_ops, 276c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_fabric_group_ops, 277c66ac9dbSNicholas Bellinger .ct_attrs = target_core_fabric_item_attrs, 278c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 279c66ac9dbSNicholas Bellinger }; 280c66ac9dbSNicholas Bellinger 281c66ac9dbSNicholas Bellinger static struct configfs_subsystem target_core_fabrics = { 282c66ac9dbSNicholas Bellinger .su_group = { 283c66ac9dbSNicholas Bellinger .cg_item = { 284c66ac9dbSNicholas Bellinger .ci_namebuf = "target", 285c66ac9dbSNicholas Bellinger .ci_type = &target_core_fabrics_item, 286c66ac9dbSNicholas Bellinger }, 287c66ac9dbSNicholas Bellinger }, 288c66ac9dbSNicholas Bellinger }; 289c66ac9dbSNicholas Bellinger 290d588cf8fSChristoph Hellwig int target_depend_item(struct config_item *item) 291d588cf8fSChristoph Hellwig { 292d588cf8fSChristoph Hellwig return configfs_depend_item(&target_core_fabrics, item); 293d588cf8fSChristoph Hellwig } 294d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_depend_item); 295d588cf8fSChristoph Hellwig 296d588cf8fSChristoph Hellwig void target_undepend_item(struct config_item *item) 297d588cf8fSChristoph Hellwig { 298d588cf8fSChristoph Hellwig return configfs_undepend_item(&target_core_fabrics, item); 299d588cf8fSChristoph Hellwig } 300d588cf8fSChristoph Hellwig EXPORT_SYMBOL(target_undepend_item); 301c66ac9dbSNicholas Bellinger 302c66ac9dbSNicholas Bellinger /*############################################################################## 303c66ac9dbSNicholas Bellinger // Start functions called by external Target Fabrics Modules 304c66ac9dbSNicholas Bellinger //############################################################################*/ 305c66ac9dbSNicholas Bellinger 3069ac8928eSChristoph Hellwig static int target_fabric_tf_ops_check(const struct target_core_fabric_ops *tfo) 307c66ac9dbSNicholas Bellinger { 3089ac8928eSChristoph Hellwig if (!tfo->name) { 3099ac8928eSChristoph Hellwig pr_err("Missing tfo->name\n"); 3109ac8928eSChristoph Hellwig return -EINVAL; 311c66ac9dbSNicholas Bellinger } 3129ac8928eSChristoph Hellwig if (strlen(tfo->name) >= TARGET_FABRIC_NAME_SIZE) { 3136708bb27SAndy Grover pr_err("Passed name: %s exceeds TARGET_FABRIC" 3149ac8928eSChristoph Hellwig "_NAME_SIZE\n", tfo->name); 3159ac8928eSChristoph Hellwig return -EINVAL; 316c66ac9dbSNicholas Bellinger } 3176708bb27SAndy Grover if (!tfo->get_fabric_name) { 3186708bb27SAndy Grover pr_err("Missing tfo->get_fabric_name()\n"); 319c66ac9dbSNicholas Bellinger return -EINVAL; 320c66ac9dbSNicholas Bellinger } 3216708bb27SAndy Grover if (!tfo->tpg_get_wwn) { 3226708bb27SAndy Grover pr_err("Missing tfo->tpg_get_wwn()\n"); 323c66ac9dbSNicholas Bellinger return -EINVAL; 324c66ac9dbSNicholas Bellinger } 3256708bb27SAndy Grover if (!tfo->tpg_get_tag) { 3266708bb27SAndy Grover pr_err("Missing tfo->tpg_get_tag()\n"); 327c66ac9dbSNicholas Bellinger return -EINVAL; 328c66ac9dbSNicholas Bellinger } 3296708bb27SAndy Grover if (!tfo->tpg_check_demo_mode) { 3306708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode()\n"); 331c66ac9dbSNicholas Bellinger return -EINVAL; 332c66ac9dbSNicholas Bellinger } 3336708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_cache) { 3346708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); 335c66ac9dbSNicholas Bellinger return -EINVAL; 336c66ac9dbSNicholas Bellinger } 3376708bb27SAndy Grover if (!tfo->tpg_check_demo_mode_write_protect) { 3386708bb27SAndy Grover pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); 339c66ac9dbSNicholas Bellinger return -EINVAL; 340c66ac9dbSNicholas Bellinger } 3416708bb27SAndy Grover if (!tfo->tpg_check_prod_mode_write_protect) { 3426708bb27SAndy Grover pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); 343c66ac9dbSNicholas Bellinger return -EINVAL; 344c66ac9dbSNicholas Bellinger } 3456708bb27SAndy Grover if (!tfo->tpg_get_inst_index) { 3466708bb27SAndy Grover pr_err("Missing tfo->tpg_get_inst_index()\n"); 347c66ac9dbSNicholas Bellinger return -EINVAL; 348c66ac9dbSNicholas Bellinger } 34935462975SChristoph Hellwig if (!tfo->release_cmd) { 3506708bb27SAndy Grover pr_err("Missing tfo->release_cmd()\n"); 351c66ac9dbSNicholas Bellinger return -EINVAL; 352c66ac9dbSNicholas Bellinger } 3536708bb27SAndy Grover if (!tfo->shutdown_session) { 3546708bb27SAndy Grover pr_err("Missing tfo->shutdown_session()\n"); 355c66ac9dbSNicholas Bellinger return -EINVAL; 356c66ac9dbSNicholas Bellinger } 3576708bb27SAndy Grover if (!tfo->close_session) { 3586708bb27SAndy Grover pr_err("Missing tfo->close_session()\n"); 359c66ac9dbSNicholas Bellinger return -EINVAL; 360c66ac9dbSNicholas Bellinger } 3616708bb27SAndy Grover if (!tfo->sess_get_index) { 3626708bb27SAndy Grover pr_err("Missing tfo->sess_get_index()\n"); 363c66ac9dbSNicholas Bellinger return -EINVAL; 364c66ac9dbSNicholas Bellinger } 3656708bb27SAndy Grover if (!tfo->write_pending) { 3666708bb27SAndy Grover pr_err("Missing tfo->write_pending()\n"); 367c66ac9dbSNicholas Bellinger return -EINVAL; 368c66ac9dbSNicholas Bellinger } 3696708bb27SAndy Grover if (!tfo->write_pending_status) { 3706708bb27SAndy Grover pr_err("Missing tfo->write_pending_status()\n"); 371c66ac9dbSNicholas Bellinger return -EINVAL; 372c66ac9dbSNicholas Bellinger } 3736708bb27SAndy Grover if (!tfo->set_default_node_attributes) { 3746708bb27SAndy Grover pr_err("Missing tfo->set_default_node_attributes()\n"); 375c66ac9dbSNicholas Bellinger return -EINVAL; 376c66ac9dbSNicholas Bellinger } 3776708bb27SAndy Grover if (!tfo->get_cmd_state) { 3786708bb27SAndy Grover pr_err("Missing tfo->get_cmd_state()\n"); 379c66ac9dbSNicholas Bellinger return -EINVAL; 380c66ac9dbSNicholas Bellinger } 3816708bb27SAndy Grover if (!tfo->queue_data_in) { 3826708bb27SAndy Grover pr_err("Missing tfo->queue_data_in()\n"); 383c66ac9dbSNicholas Bellinger return -EINVAL; 384c66ac9dbSNicholas Bellinger } 3856708bb27SAndy Grover if (!tfo->queue_status) { 3866708bb27SAndy Grover pr_err("Missing tfo->queue_status()\n"); 387c66ac9dbSNicholas Bellinger return -EINVAL; 388c66ac9dbSNicholas Bellinger } 3896708bb27SAndy Grover if (!tfo->queue_tm_rsp) { 3906708bb27SAndy Grover pr_err("Missing tfo->queue_tm_rsp()\n"); 391c66ac9dbSNicholas Bellinger return -EINVAL; 392c66ac9dbSNicholas Bellinger } 393131e6abcSNicholas Bellinger if (!tfo->aborted_task) { 394131e6abcSNicholas Bellinger pr_err("Missing tfo->aborted_task()\n"); 395131e6abcSNicholas Bellinger return -EINVAL; 396131e6abcSNicholas Bellinger } 397c66ac9dbSNicholas Bellinger /* 398c66ac9dbSNicholas Bellinger * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() 399c66ac9dbSNicholas Bellinger * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in 400c66ac9dbSNicholas Bellinger * target_core_fabric_configfs.c WWN+TPG group context code. 401c66ac9dbSNicholas Bellinger */ 4026708bb27SAndy Grover if (!tfo->fabric_make_wwn) { 4036708bb27SAndy Grover pr_err("Missing tfo->fabric_make_wwn()\n"); 404c66ac9dbSNicholas Bellinger return -EINVAL; 405c66ac9dbSNicholas Bellinger } 4066708bb27SAndy Grover if (!tfo->fabric_drop_wwn) { 4076708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_wwn()\n"); 408c66ac9dbSNicholas Bellinger return -EINVAL; 409c66ac9dbSNicholas Bellinger } 4106708bb27SAndy Grover if (!tfo->fabric_make_tpg) { 4116708bb27SAndy Grover pr_err("Missing tfo->fabric_make_tpg()\n"); 412c66ac9dbSNicholas Bellinger return -EINVAL; 413c66ac9dbSNicholas Bellinger } 4146708bb27SAndy Grover if (!tfo->fabric_drop_tpg) { 4156708bb27SAndy Grover pr_err("Missing tfo->fabric_drop_tpg()\n"); 416c66ac9dbSNicholas Bellinger return -EINVAL; 417c66ac9dbSNicholas Bellinger } 418c66ac9dbSNicholas Bellinger 419c66ac9dbSNicholas Bellinger return 0; 420c66ac9dbSNicholas Bellinger } 421c66ac9dbSNicholas Bellinger 4229ac8928eSChristoph Hellwig int target_register_template(const struct target_core_fabric_ops *fo) 423c66ac9dbSNicholas Bellinger { 4249ac8928eSChristoph Hellwig struct target_fabric_configfs *tf; 425c66ac9dbSNicholas Bellinger int ret; 426c66ac9dbSNicholas Bellinger 4279ac8928eSChristoph Hellwig ret = target_fabric_tf_ops_check(fo); 4289ac8928eSChristoph Hellwig if (ret) 429c66ac9dbSNicholas Bellinger return ret; 430c66ac9dbSNicholas Bellinger 4319ac8928eSChristoph Hellwig tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); 4329ac8928eSChristoph Hellwig if (!tf) { 4339ac8928eSChristoph Hellwig pr_err("%s: could not allocate memory!\n", __func__); 4349ac8928eSChristoph Hellwig return -ENOMEM; 4359ac8928eSChristoph Hellwig } 4369ac8928eSChristoph Hellwig 4379ac8928eSChristoph Hellwig INIT_LIST_HEAD(&tf->tf_list); 4389ac8928eSChristoph Hellwig atomic_set(&tf->tf_access_cnt, 0); 4399ac8928eSChristoph Hellwig 4409ac8928eSChristoph Hellwig /* 4419ac8928eSChristoph Hellwig * Setup the default generic struct config_item_type's (cits) in 4429ac8928eSChristoph Hellwig * struct target_fabric_configfs->tf_cit_tmpl 4439ac8928eSChristoph Hellwig */ 4449ac8928eSChristoph Hellwig tf->tf_module = fo->module; 4459ac8928eSChristoph Hellwig snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", fo->name); 4469ac8928eSChristoph Hellwig 4479ac8928eSChristoph Hellwig tf->tf_ops = *fo; 4489ac8928eSChristoph Hellwig target_fabric_setup_cits(tf); 4499ac8928eSChristoph Hellwig 4509ac8928eSChristoph Hellwig mutex_lock(&g_tf_lock); 4519ac8928eSChristoph Hellwig list_add_tail(&tf->tf_list, &g_tf_list); 4529ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4539ac8928eSChristoph Hellwig 454c66ac9dbSNicholas Bellinger return 0; 455c66ac9dbSNicholas Bellinger } 4569ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_register_template); 457c66ac9dbSNicholas Bellinger 4589ac8928eSChristoph Hellwig void target_unregister_template(const struct target_core_fabric_ops *fo) 459c66ac9dbSNicholas Bellinger { 4609ac8928eSChristoph Hellwig struct target_fabric_configfs *t; 461c66ac9dbSNicholas Bellinger 462c66ac9dbSNicholas Bellinger mutex_lock(&g_tf_lock); 4639ac8928eSChristoph Hellwig list_for_each_entry(t, &g_tf_list, tf_list) { 4649ac8928eSChristoph Hellwig if (!strcmp(t->tf_name, fo->name)) { 4659ac8928eSChristoph Hellwig BUG_ON(atomic_read(&t->tf_access_cnt)); 4669ac8928eSChristoph Hellwig list_del(&t->tf_list); 4679ac8928eSChristoph Hellwig kfree(t); 4689ac8928eSChristoph Hellwig break; 469c66ac9dbSNicholas Bellinger } 470c66ac9dbSNicholas Bellinger } 4719ac8928eSChristoph Hellwig mutex_unlock(&g_tf_lock); 4729ac8928eSChristoph Hellwig } 4739ac8928eSChristoph Hellwig EXPORT_SYMBOL(target_unregister_template); 474c66ac9dbSNicholas Bellinger 475c66ac9dbSNicholas Bellinger /*############################################################################## 476c66ac9dbSNicholas Bellinger // Stop functions called by external Target Fabrics Modules 477c66ac9dbSNicholas Bellinger //############################################################################*/ 478c66ac9dbSNicholas Bellinger 479f79a897eSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_attrib_cit */ 480c66ac9dbSNicholas Bellinger 481c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); 482c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); 483c66ac9dbSNicholas Bellinger 484c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_attrib_ops = { 485c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_attrib_attr_show, 486c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_attrib_attr_store, 487c66ac9dbSNicholas Bellinger }; 488c66ac9dbSNicholas Bellinger 48943cf208cSNicholas Bellinger TB_CIT_SETUP(dev_attrib, &target_core_dev_attrib_ops, NULL, NULL); 490c66ac9dbSNicholas Bellinger 491f79a897eSNicholas Bellinger /* End functions for struct config_item_type tb_dev_attrib_cit */ 492c66ac9dbSNicholas Bellinger 493f8d389c6SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_wwn_cit */ 494c66ac9dbSNicholas Bellinger 495c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); 496c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR(_name, _mode) \ 497c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ 498c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 499c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name, \ 500c66ac9dbSNicholas Bellinger target_core_dev_wwn_store_attr_##_name); 501c66ac9dbSNicholas Bellinger 502c66ac9dbSNicholas Bellinger #define SE_DEV_WWN_ATTR_RO(_name); \ 503c66ac9dbSNicholas Bellinger do { \ 504c66ac9dbSNicholas Bellinger static struct target_core_dev_wwn_attribute \ 505c66ac9dbSNicholas Bellinger target_core_dev_wwn_##_name = \ 506c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 507c66ac9dbSNicholas Bellinger target_core_dev_wwn_show_attr_##_name); \ 508c66ac9dbSNicholas Bellinger } while (0); 509c66ac9dbSNicholas Bellinger 510c66ac9dbSNicholas Bellinger /* 511c66ac9dbSNicholas Bellinger * VPD page 0x80 Unit serial 512c66ac9dbSNicholas Bellinger */ 513c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( 514c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 515c66ac9dbSNicholas Bellinger char *page) 516c66ac9dbSNicholas Bellinger { 517c66ac9dbSNicholas Bellinger return sprintf(page, "T10 VPD Unit Serial Number: %s\n", 518c66ac9dbSNicholas Bellinger &t10_wwn->unit_serial[0]); 519c66ac9dbSNicholas Bellinger } 520c66ac9dbSNicholas Bellinger 521c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( 522c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 523c66ac9dbSNicholas Bellinger const char *page, 524c66ac9dbSNicholas Bellinger size_t count) 525c66ac9dbSNicholas Bellinger { 5260fd97ccfSChristoph Hellwig struct se_device *dev = t10_wwn->t10_dev; 527c66ac9dbSNicholas Bellinger unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; 528c66ac9dbSNicholas Bellinger 529c66ac9dbSNicholas Bellinger /* 530c66ac9dbSNicholas Bellinger * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial 531c66ac9dbSNicholas Bellinger * from the struct scsi_device level firmware, do not allow 532c66ac9dbSNicholas Bellinger * VPD Unit Serial to be emulated. 533c66ac9dbSNicholas Bellinger * 534c66ac9dbSNicholas Bellinger * Note this struct scsi_device could also be emulating VPD 535c66ac9dbSNicholas Bellinger * information from its drivers/scsi LLD. But for now we assume 536c66ac9dbSNicholas Bellinger * it is doing 'the right thing' wrt a world wide unique 537c66ac9dbSNicholas Bellinger * VPD Unit Serial Number that OS dependent multipath can depend on. 538c66ac9dbSNicholas Bellinger */ 5390fd97ccfSChristoph Hellwig if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { 5406708bb27SAndy Grover pr_err("Underlying SCSI device firmware provided VPD" 541c66ac9dbSNicholas Bellinger " Unit Serial, ignoring request\n"); 542c66ac9dbSNicholas Bellinger return -EOPNOTSUPP; 543c66ac9dbSNicholas Bellinger } 544c66ac9dbSNicholas Bellinger 54560d645a4SDan Carpenter if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { 5466708bb27SAndy Grover pr_err("Emulated VPD Unit Serial exceeds" 547c66ac9dbSNicholas Bellinger " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); 548c66ac9dbSNicholas Bellinger return -EOVERFLOW; 549c66ac9dbSNicholas Bellinger } 550c66ac9dbSNicholas Bellinger /* 551c66ac9dbSNicholas Bellinger * Check to see if any active $FABRIC_MOD exports exist. If they 552c66ac9dbSNicholas Bellinger * do exist, fail here as changing this information on the fly 553c66ac9dbSNicholas Bellinger * (underneath the initiator side OS dependent multipath code) 554c66ac9dbSNicholas Bellinger * could cause negative effects. 555c66ac9dbSNicholas Bellinger */ 5560fd97ccfSChristoph Hellwig if (dev->export_count) { 5576708bb27SAndy Grover pr_err("Unable to set VPD Unit Serial while" 558c66ac9dbSNicholas Bellinger " active %d $FABRIC_MOD exports exist\n", 5590fd97ccfSChristoph Hellwig dev->export_count); 560c66ac9dbSNicholas Bellinger return -EINVAL; 561c66ac9dbSNicholas Bellinger } 5620fd97ccfSChristoph Hellwig 563c66ac9dbSNicholas Bellinger /* 564c66ac9dbSNicholas Bellinger * This currently assumes ASCII encoding for emulated VPD Unit Serial. 565c66ac9dbSNicholas Bellinger * 566c66ac9dbSNicholas Bellinger * Also, strip any newline added from the userspace 567c66ac9dbSNicholas Bellinger * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial 568c66ac9dbSNicholas Bellinger */ 569c66ac9dbSNicholas Bellinger memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); 570c66ac9dbSNicholas Bellinger snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); 5710fd97ccfSChristoph Hellwig snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, 572c66ac9dbSNicholas Bellinger "%s", strstrip(buf)); 5730fd97ccfSChristoph Hellwig dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; 574c66ac9dbSNicholas Bellinger 5756708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" 5760fd97ccfSChristoph Hellwig " %s\n", dev->t10_wwn.unit_serial); 577c66ac9dbSNicholas Bellinger 578c66ac9dbSNicholas Bellinger return count; 579c66ac9dbSNicholas Bellinger } 580c66ac9dbSNicholas Bellinger 581c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); 582c66ac9dbSNicholas Bellinger 583c66ac9dbSNicholas Bellinger /* 584c66ac9dbSNicholas Bellinger * VPD page 0x83 Protocol Identifier 585c66ac9dbSNicholas Bellinger */ 586c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( 587c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 588c66ac9dbSNicholas Bellinger char *page) 589c66ac9dbSNicholas Bellinger { 590c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; 591c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; 592c66ac9dbSNicholas Bellinger ssize_t len = 0; 593c66ac9dbSNicholas Bellinger 594c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); 595c66ac9dbSNicholas Bellinger 596c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); 597c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { 5986708bb27SAndy Grover if (!vpd->protocol_identifier_set) 599c66ac9dbSNicholas Bellinger continue; 600c66ac9dbSNicholas Bellinger 601c66ac9dbSNicholas Bellinger transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); 602c66ac9dbSNicholas Bellinger 6036708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 604c66ac9dbSNicholas Bellinger break; 605c66ac9dbSNicholas Bellinger 606c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 607c66ac9dbSNicholas Bellinger } 608c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); 609c66ac9dbSNicholas Bellinger 610c66ac9dbSNicholas Bellinger return len; 611c66ac9dbSNicholas Bellinger } 612c66ac9dbSNicholas Bellinger 613c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( 614c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 615c66ac9dbSNicholas Bellinger const char *page, 616c66ac9dbSNicholas Bellinger size_t count) 617c66ac9dbSNicholas Bellinger { 618c66ac9dbSNicholas Bellinger return -ENOSYS; 619c66ac9dbSNicholas Bellinger } 620c66ac9dbSNicholas Bellinger 621c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); 622c66ac9dbSNicholas Bellinger 623c66ac9dbSNicholas Bellinger /* 624c66ac9dbSNicholas Bellinger * Generic wrapper for dumping VPD identifiers by association. 625c66ac9dbSNicholas Bellinger */ 626c66ac9dbSNicholas Bellinger #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ 627c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_show_attr_##_name( \ 628c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, \ 629c66ac9dbSNicholas Bellinger char *page) \ 630c66ac9dbSNicholas Bellinger { \ 631c66ac9dbSNicholas Bellinger struct t10_vpd *vpd; \ 632c66ac9dbSNicholas Bellinger unsigned char buf[VPD_TMP_BUF_SIZE]; \ 633c66ac9dbSNicholas Bellinger ssize_t len = 0; \ 634c66ac9dbSNicholas Bellinger \ 635c66ac9dbSNicholas Bellinger spin_lock(&t10_wwn->t10_vpd_lock); \ 636c66ac9dbSNicholas Bellinger list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ 637c66ac9dbSNicholas Bellinger if (vpd->association != _assoc) \ 638c66ac9dbSNicholas Bellinger continue; \ 639c66ac9dbSNicholas Bellinger \ 640c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 641c66ac9dbSNicholas Bellinger transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ 6426708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 643c66ac9dbSNicholas Bellinger break; \ 644c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 645c66ac9dbSNicholas Bellinger \ 646c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 647c66ac9dbSNicholas Bellinger transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ 6486708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 649c66ac9dbSNicholas Bellinger break; \ 650c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 651c66ac9dbSNicholas Bellinger \ 652c66ac9dbSNicholas Bellinger memset(buf, 0, VPD_TMP_BUF_SIZE); \ 653c66ac9dbSNicholas Bellinger transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ 6546708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) \ 655c66ac9dbSNicholas Bellinger break; \ 656c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); \ 657c66ac9dbSNicholas Bellinger } \ 658c66ac9dbSNicholas Bellinger spin_unlock(&t10_wwn->t10_vpd_lock); \ 659c66ac9dbSNicholas Bellinger \ 660c66ac9dbSNicholas Bellinger return len; \ 661c66ac9dbSNicholas Bellinger } 662c66ac9dbSNicholas Bellinger 663c66ac9dbSNicholas Bellinger /* 664163cd5faSAndy Shevchenko * VPD page 0x83 Association: Logical Unit 665c66ac9dbSNicholas Bellinger */ 666c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); 667c66ac9dbSNicholas Bellinger 668c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( 669c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 670c66ac9dbSNicholas Bellinger const char *page, 671c66ac9dbSNicholas Bellinger size_t count) 672c66ac9dbSNicholas Bellinger { 673c66ac9dbSNicholas Bellinger return -ENOSYS; 674c66ac9dbSNicholas Bellinger } 675c66ac9dbSNicholas Bellinger 676c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); 677c66ac9dbSNicholas Bellinger 678c66ac9dbSNicholas Bellinger /* 679c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: Target Port 680c66ac9dbSNicholas Bellinger */ 681c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); 682c66ac9dbSNicholas Bellinger 683c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( 684c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 685c66ac9dbSNicholas Bellinger const char *page, 686c66ac9dbSNicholas Bellinger size_t count) 687c66ac9dbSNicholas Bellinger { 688c66ac9dbSNicholas Bellinger return -ENOSYS; 689c66ac9dbSNicholas Bellinger } 690c66ac9dbSNicholas Bellinger 691c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); 692c66ac9dbSNicholas Bellinger 693c66ac9dbSNicholas Bellinger /* 694c66ac9dbSNicholas Bellinger * VPD page 0x83 Association: SCSI Target Device 695c66ac9dbSNicholas Bellinger */ 696c66ac9dbSNicholas Bellinger DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); 697c66ac9dbSNicholas Bellinger 698c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( 699c66ac9dbSNicholas Bellinger struct t10_wwn *t10_wwn, 700c66ac9dbSNicholas Bellinger const char *page, 701c66ac9dbSNicholas Bellinger size_t count) 702c66ac9dbSNicholas Bellinger { 703c66ac9dbSNicholas Bellinger return -ENOSYS; 704c66ac9dbSNicholas Bellinger } 705c66ac9dbSNicholas Bellinger 706c66ac9dbSNicholas Bellinger SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); 707c66ac9dbSNicholas Bellinger 708c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); 709c66ac9dbSNicholas Bellinger 710c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_wwn_attrs[] = { 711c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_unit_serial.attr, 712c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_protocol_identifier.attr, 713c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_logical_unit.attr, 714c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_target_port.attr, 715c66ac9dbSNicholas Bellinger &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, 716c66ac9dbSNicholas Bellinger NULL, 717c66ac9dbSNicholas Bellinger }; 718c66ac9dbSNicholas Bellinger 719c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_wwn_ops = { 720c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_wwn_attr_show, 721c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_wwn_attr_store, 722c66ac9dbSNicholas Bellinger }; 723c66ac9dbSNicholas Bellinger 724f8d389c6SNicholas Bellinger TB_CIT_SETUP(dev_wwn, &target_core_dev_wwn_ops, NULL, target_core_dev_wwn_attrs); 725c66ac9dbSNicholas Bellinger 726f8d389c6SNicholas Bellinger /* End functions for struct config_item_type tb_dev_wwn_cit */ 727c66ac9dbSNicholas Bellinger 72891e2e39bSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_pr_cit */ 729c66ac9dbSNicholas Bellinger 7300fd97ccfSChristoph Hellwig CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); 731c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR(_name, _mode) \ 732c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 733c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 734c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name, \ 735c66ac9dbSNicholas Bellinger target_core_dev_pr_store_attr_##_name); 736c66ac9dbSNicholas Bellinger 737c66ac9dbSNicholas Bellinger #define SE_DEV_PR_ATTR_RO(_name); \ 738c66ac9dbSNicholas Bellinger static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ 739c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 740c66ac9dbSNicholas Bellinger target_core_dev_pr_show_attr_##_name); 741c66ac9dbSNicholas Bellinger 742d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, 743d977f437SChristoph Hellwig char *page) 744c66ac9dbSNicholas Bellinger { 745c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 746c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 747c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 748c66ac9dbSNicholas Bellinger 749c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 750c66ac9dbSNicholas Bellinger 751c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 752d977f437SChristoph Hellwig if (!pr_reg) 753d977f437SChristoph Hellwig return sprintf(page, "No SPC-3 Reservation holder\n"); 754d977f437SChristoph Hellwig 755c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 756d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); 757c66ac9dbSNicholas Bellinger 758d977f437SChristoph Hellwig return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", 759e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 760d2843c17SAndy Grover se_nacl->initiatorname, i_buf); 761c66ac9dbSNicholas Bellinger } 762c66ac9dbSNicholas Bellinger 763d977f437SChristoph Hellwig static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, 764d977f437SChristoph Hellwig char *page) 765c66ac9dbSNicholas Bellinger { 766c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 767d977f437SChristoph Hellwig ssize_t len; 768c66ac9dbSNicholas Bellinger 769c66ac9dbSNicholas Bellinger se_nacl = dev->dev_reserved_node_acl; 770d977f437SChristoph Hellwig if (se_nacl) { 771d977f437SChristoph Hellwig len = sprintf(page, 772d977f437SChristoph Hellwig "SPC-2 Reservation: %s Initiator: %s\n", 773e3d6f909SAndy Grover se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), 774c66ac9dbSNicholas Bellinger se_nacl->initiatorname); 775d977f437SChristoph Hellwig } else { 776d977f437SChristoph Hellwig len = sprintf(page, "No SPC-2 Reservation holder\n"); 777d977f437SChristoph Hellwig } 778d977f437SChristoph Hellwig return len; 779c66ac9dbSNicholas Bellinger } 780c66ac9dbSNicholas Bellinger 7810fd97ccfSChristoph Hellwig static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, 782c66ac9dbSNicholas Bellinger char *page) 783c66ac9dbSNicholas Bellinger { 784d977f437SChristoph Hellwig int ret; 785c66ac9dbSNicholas Bellinger 786a3541703SAndy Grover if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) 787d977f437SChristoph Hellwig return sprintf(page, "Passthrough\n"); 788c66ac9dbSNicholas Bellinger 789d977f437SChristoph Hellwig spin_lock(&dev->dev_reservation_lock); 790d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 791d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc2_res(dev, page); 792d977f437SChristoph Hellwig else 793d977f437SChristoph Hellwig ret = target_core_dev_pr_show_spc3_res(dev, page); 794d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 795d977f437SChristoph Hellwig return ret; 796c66ac9dbSNicholas Bellinger } 797c66ac9dbSNicholas Bellinger 798c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_holder); 799c66ac9dbSNicholas Bellinger 800c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( 8010fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 802c66ac9dbSNicholas Bellinger { 803c66ac9dbSNicholas Bellinger ssize_t len = 0; 804c66ac9dbSNicholas Bellinger 805c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 806d977f437SChristoph Hellwig if (!dev->dev_pr_res_holder) { 807c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 808d977f437SChristoph Hellwig } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { 809c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: All Target" 810c66ac9dbSNicholas Bellinger " Ports registration\n"); 811d977f437SChristoph Hellwig } else { 812c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation: Single" 813c66ac9dbSNicholas Bellinger " Target Port registration\n"); 814d977f437SChristoph Hellwig } 815c66ac9dbSNicholas Bellinger 816d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 817c66ac9dbSNicholas Bellinger return len; 818c66ac9dbSNicholas Bellinger } 819c66ac9dbSNicholas Bellinger 820c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); 821c66ac9dbSNicholas Bellinger 822c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_generation( 8230fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 824c66ac9dbSNicholas Bellinger { 8250fd97ccfSChristoph Hellwig return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); 826c66ac9dbSNicholas Bellinger } 827c66ac9dbSNicholas Bellinger 828c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_generation); 829c66ac9dbSNicholas Bellinger 830c66ac9dbSNicholas Bellinger /* 831c66ac9dbSNicholas Bellinger * res_pr_holder_tg_port 832c66ac9dbSNicholas Bellinger */ 833c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( 8340fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 835c66ac9dbSNicholas Bellinger { 836c66ac9dbSNicholas Bellinger struct se_node_acl *se_nacl; 837c66ac9dbSNicholas Bellinger struct se_lun *lun; 838c66ac9dbSNicholas Bellinger struct se_portal_group *se_tpg; 839c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 8409ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 841c66ac9dbSNicholas Bellinger ssize_t len = 0; 842c66ac9dbSNicholas Bellinger 843c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 844c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 8456708bb27SAndy Grover if (!pr_reg) { 846c66ac9dbSNicholas Bellinger len = sprintf(page, "No SPC-3 Reservation holder\n"); 847d977f437SChristoph Hellwig goto out_unlock; 848c66ac9dbSNicholas Bellinger } 849d977f437SChristoph Hellwig 850c66ac9dbSNicholas Bellinger se_nacl = pr_reg->pr_reg_nacl; 851c66ac9dbSNicholas Bellinger se_tpg = se_nacl->se_tpg; 852c66ac9dbSNicholas Bellinger lun = pr_reg->pr_reg_tg_pt_lun; 853e3d6f909SAndy Grover tfo = se_tpg->se_tpg_tfo; 854c66ac9dbSNicholas Bellinger 855c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: %s" 856c66ac9dbSNicholas Bellinger " Target Node Endpoint: %s\n", tfo->get_fabric_name(), 857c66ac9dbSNicholas Bellinger tfo->tpg_get_wwn(se_tpg)); 858c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 Reservation: Relative Port" 85935d1efe8SMasanari Iida " Identifier Tag: %hu %s Portal Group Tag: %hu" 860c66ac9dbSNicholas Bellinger " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, 861c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), 862c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), lun->unpacked_lun); 863c66ac9dbSNicholas Bellinger 864d977f437SChristoph Hellwig out_unlock: 865d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 866c66ac9dbSNicholas Bellinger return len; 867c66ac9dbSNicholas Bellinger } 868c66ac9dbSNicholas Bellinger 869c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); 870c66ac9dbSNicholas Bellinger 871c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( 8720fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 873c66ac9dbSNicholas Bellinger { 8749ac8928eSChristoph Hellwig const struct target_core_fabric_ops *tfo; 875c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 876c66ac9dbSNicholas Bellinger unsigned char buf[384]; 877c66ac9dbSNicholas Bellinger char i_buf[PR_REG_ISID_ID_LEN]; 878c66ac9dbSNicholas Bellinger ssize_t len = 0; 879d2843c17SAndy Grover int reg_count = 0; 880c66ac9dbSNicholas Bellinger 881c66ac9dbSNicholas Bellinger len += sprintf(page+len, "SPC-3 PR Registrations:\n"); 882c66ac9dbSNicholas Bellinger 8830fd97ccfSChristoph Hellwig spin_lock(&dev->t10_pr.registration_lock); 8840fd97ccfSChristoph Hellwig list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, 885c66ac9dbSNicholas Bellinger pr_reg_list) { 886c66ac9dbSNicholas Bellinger 887c66ac9dbSNicholas Bellinger memset(buf, 0, 384); 888c66ac9dbSNicholas Bellinger memset(i_buf, 0, PR_REG_ISID_ID_LEN); 889c66ac9dbSNicholas Bellinger tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; 890d2843c17SAndy Grover core_pr_dump_initiator_port(pr_reg, i_buf, 891c66ac9dbSNicholas Bellinger PR_REG_ISID_ID_LEN); 892c66ac9dbSNicholas Bellinger sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", 893c66ac9dbSNicholas Bellinger tfo->get_fabric_name(), 894d2843c17SAndy Grover pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, 895c66ac9dbSNicholas Bellinger pr_reg->pr_res_generation); 896c66ac9dbSNicholas Bellinger 8976708bb27SAndy Grover if (len + strlen(buf) >= PAGE_SIZE) 898c66ac9dbSNicholas Bellinger break; 899c66ac9dbSNicholas Bellinger 900c66ac9dbSNicholas Bellinger len += sprintf(page+len, "%s", buf); 901c66ac9dbSNicholas Bellinger reg_count++; 902c66ac9dbSNicholas Bellinger } 9030fd97ccfSChristoph Hellwig spin_unlock(&dev->t10_pr.registration_lock); 904c66ac9dbSNicholas Bellinger 9056708bb27SAndy Grover if (!reg_count) 906c66ac9dbSNicholas Bellinger len += sprintf(page+len, "None\n"); 907c66ac9dbSNicholas Bellinger 908c66ac9dbSNicholas Bellinger return len; 909c66ac9dbSNicholas Bellinger } 910c66ac9dbSNicholas Bellinger 911c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); 912c66ac9dbSNicholas Bellinger 913c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_pr_type( 9140fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 915c66ac9dbSNicholas Bellinger { 916c66ac9dbSNicholas Bellinger struct t10_pr_registration *pr_reg; 917c66ac9dbSNicholas Bellinger ssize_t len = 0; 918c66ac9dbSNicholas Bellinger 919c66ac9dbSNicholas Bellinger spin_lock(&dev->dev_reservation_lock); 920c66ac9dbSNicholas Bellinger pr_reg = dev->dev_pr_res_holder; 921d977f437SChristoph Hellwig if (pr_reg) { 922c66ac9dbSNicholas Bellinger len = sprintf(page, "SPC-3 Reservation Type: %s\n", 923c66ac9dbSNicholas Bellinger core_scsi3_pr_dump_type(pr_reg->pr_res_type)); 924d977f437SChristoph Hellwig } else { 925d977f437SChristoph Hellwig len = sprintf(page, "No SPC-3 Reservation holder\n"); 926d977f437SChristoph Hellwig } 927c66ac9dbSNicholas Bellinger 928d977f437SChristoph Hellwig spin_unlock(&dev->dev_reservation_lock); 929c66ac9dbSNicholas Bellinger return len; 930c66ac9dbSNicholas Bellinger } 931c66ac9dbSNicholas Bellinger 932c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_pr_type); 933c66ac9dbSNicholas Bellinger 934c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_type( 9350fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 936c66ac9dbSNicholas Bellinger { 937a3541703SAndy Grover if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) 938d977f437SChristoph Hellwig return sprintf(page, "SPC_PASSTHROUGH\n"); 939d977f437SChristoph Hellwig else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 940d977f437SChristoph Hellwig return sprintf(page, "SPC2_RESERVATIONS\n"); 941d977f437SChristoph Hellwig else 942d977f437SChristoph Hellwig return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); 943c66ac9dbSNicholas Bellinger } 944c66ac9dbSNicholas Bellinger 945c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_type); 946c66ac9dbSNicholas Bellinger 947c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( 9480fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 949c66ac9dbSNicholas Bellinger { 950a3541703SAndy Grover if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) 951c66ac9dbSNicholas Bellinger return 0; 952c66ac9dbSNicholas Bellinger 953c66ac9dbSNicholas Bellinger return sprintf(page, "APTPL Bit Status: %s\n", 9540fd97ccfSChristoph Hellwig (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); 955c66ac9dbSNicholas Bellinger } 956c66ac9dbSNicholas Bellinger 957c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR_RO(res_aptpl_active); 958c66ac9dbSNicholas Bellinger 959c66ac9dbSNicholas Bellinger /* 960c66ac9dbSNicholas Bellinger * res_aptpl_metadata 961c66ac9dbSNicholas Bellinger */ 962c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( 9630fd97ccfSChristoph Hellwig struct se_device *dev, char *page) 964c66ac9dbSNicholas Bellinger { 965a3541703SAndy Grover if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) 966c66ac9dbSNicholas Bellinger return 0; 967c66ac9dbSNicholas Bellinger 968c66ac9dbSNicholas Bellinger return sprintf(page, "Ready to process PR APTPL metadata..\n"); 969c66ac9dbSNicholas Bellinger } 970c66ac9dbSNicholas Bellinger 971c66ac9dbSNicholas Bellinger enum { 972c66ac9dbSNicholas Bellinger Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, 973c66ac9dbSNicholas Bellinger Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, 974c66ac9dbSNicholas Bellinger Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, 975c66ac9dbSNicholas Bellinger Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err 976c66ac9dbSNicholas Bellinger }; 977c66ac9dbSNicholas Bellinger 978c66ac9dbSNicholas Bellinger static match_table_t tokens = { 979c66ac9dbSNicholas Bellinger {Opt_initiator_fabric, "initiator_fabric=%s"}, 980c66ac9dbSNicholas Bellinger {Opt_initiator_node, "initiator_node=%s"}, 981c66ac9dbSNicholas Bellinger {Opt_initiator_sid, "initiator_sid=%s"}, 982c66ac9dbSNicholas Bellinger {Opt_sa_res_key, "sa_res_key=%s"}, 983c66ac9dbSNicholas Bellinger {Opt_res_holder, "res_holder=%d"}, 984c66ac9dbSNicholas Bellinger {Opt_res_type, "res_type=%d"}, 985c66ac9dbSNicholas Bellinger {Opt_res_scope, "res_scope=%d"}, 986c66ac9dbSNicholas Bellinger {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, 987c66ac9dbSNicholas Bellinger {Opt_mapped_lun, "mapped_lun=%d"}, 988c66ac9dbSNicholas Bellinger {Opt_target_fabric, "target_fabric=%s"}, 989c66ac9dbSNicholas Bellinger {Opt_target_node, "target_node=%s"}, 990c66ac9dbSNicholas Bellinger {Opt_tpgt, "tpgt=%d"}, 991c66ac9dbSNicholas Bellinger {Opt_port_rtpi, "port_rtpi=%d"}, 992c66ac9dbSNicholas Bellinger {Opt_target_lun, "target_lun=%d"}, 993c66ac9dbSNicholas Bellinger {Opt_err, NULL} 994c66ac9dbSNicholas Bellinger }; 995c66ac9dbSNicholas Bellinger 996c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( 9970fd97ccfSChristoph Hellwig struct se_device *dev, 998c66ac9dbSNicholas Bellinger const char *page, 999c66ac9dbSNicholas Bellinger size_t count) 1000c66ac9dbSNicholas Bellinger { 10016d180253SJesper Juhl unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; 10026d180253SJesper Juhl unsigned char *t_fabric = NULL, *t_port = NULL; 10038d213559SJoern Engel char *orig, *ptr, *opts; 1004c66ac9dbSNicholas Bellinger substring_t args[MAX_OPT_ARGS]; 1005c66ac9dbSNicholas Bellinger unsigned long long tmp_ll; 1006c66ac9dbSNicholas Bellinger u64 sa_res_key = 0; 1007c66ac9dbSNicholas Bellinger u32 mapped_lun = 0, target_lun = 0; 1008c66ac9dbSNicholas Bellinger int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; 100945fb94c2SBart Van Assche u16 tpgt = 0; 101045fb94c2SBart Van Assche u8 type = 0; 1011c66ac9dbSNicholas Bellinger 1012a3541703SAndy Grover if (dev->transport->transport_flags & TRANSPORT_FLAG_PASSTHROUGH) 1013d977f437SChristoph Hellwig return 0; 1014d977f437SChristoph Hellwig if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) 1015c66ac9dbSNicholas Bellinger return 0; 1016c66ac9dbSNicholas Bellinger 10170fd97ccfSChristoph Hellwig if (dev->export_count) { 10186708bb27SAndy Grover pr_debug("Unable to process APTPL metadata while" 1019c66ac9dbSNicholas Bellinger " active fabric exports exist\n"); 1020c66ac9dbSNicholas Bellinger return -EINVAL; 1021c66ac9dbSNicholas Bellinger } 1022c66ac9dbSNicholas Bellinger 1023c66ac9dbSNicholas Bellinger opts = kstrdup(page, GFP_KERNEL); 1024c66ac9dbSNicholas Bellinger if (!opts) 1025c66ac9dbSNicholas Bellinger return -ENOMEM; 1026c66ac9dbSNicholas Bellinger 1027c66ac9dbSNicholas Bellinger orig = opts; 102890c161b6SSebastian Andrzej Siewior while ((ptr = strsep(&opts, ",\n")) != NULL) { 1029c66ac9dbSNicholas Bellinger if (!*ptr) 1030c66ac9dbSNicholas Bellinger continue; 1031c66ac9dbSNicholas Bellinger 1032c66ac9dbSNicholas Bellinger token = match_token(ptr, tokens, args); 1033c66ac9dbSNicholas Bellinger switch (token) { 1034c66ac9dbSNicholas Bellinger case Opt_initiator_fabric: 10358d213559SJoern Engel i_fabric = match_strdup(args); 10366d180253SJesper Juhl if (!i_fabric) { 10376d180253SJesper Juhl ret = -ENOMEM; 10386d180253SJesper Juhl goto out; 10396d180253SJesper Juhl } 1040c66ac9dbSNicholas Bellinger break; 1041c66ac9dbSNicholas Bellinger case Opt_initiator_node: 10428d213559SJoern Engel i_port = match_strdup(args); 10436d180253SJesper Juhl if (!i_port) { 10446d180253SJesper Juhl ret = -ENOMEM; 10456d180253SJesper Juhl goto out; 10466d180253SJesper Juhl } 104760d645a4SDan Carpenter if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { 10486708bb27SAndy Grover pr_err("APTPL metadata initiator_node=" 1049c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", 1050c66ac9dbSNicholas Bellinger PR_APTPL_MAX_IPORT_LEN); 1051c66ac9dbSNicholas Bellinger ret = -EINVAL; 1052c66ac9dbSNicholas Bellinger break; 1053c66ac9dbSNicholas Bellinger } 1054c66ac9dbSNicholas Bellinger break; 1055c66ac9dbSNicholas Bellinger case Opt_initiator_sid: 10568d213559SJoern Engel isid = match_strdup(args); 10576d180253SJesper Juhl if (!isid) { 10586d180253SJesper Juhl ret = -ENOMEM; 10596d180253SJesper Juhl goto out; 10606d180253SJesper Juhl } 106160d645a4SDan Carpenter if (strlen(isid) >= PR_REG_ISID_LEN) { 10626708bb27SAndy Grover pr_err("APTPL metadata initiator_isid" 1063c66ac9dbSNicholas Bellinger "= exceeds PR_REG_ISID_LEN: %d\n", 1064c66ac9dbSNicholas Bellinger PR_REG_ISID_LEN); 1065c66ac9dbSNicholas Bellinger ret = -EINVAL; 1066c66ac9dbSNicholas Bellinger break; 1067c66ac9dbSNicholas Bellinger } 1068c66ac9dbSNicholas Bellinger break; 1069c66ac9dbSNicholas Bellinger case Opt_sa_res_key: 10708d213559SJoern Engel ret = kstrtoull(args->from, 0, &tmp_ll); 1071c66ac9dbSNicholas Bellinger if (ret < 0) { 10728d213559SJoern Engel pr_err("kstrtoull() failed for sa_res_key=\n"); 1073c66ac9dbSNicholas Bellinger goto out; 1074c66ac9dbSNicholas Bellinger } 1075c66ac9dbSNicholas Bellinger sa_res_key = (u64)tmp_ll; 1076c66ac9dbSNicholas Bellinger break; 1077c66ac9dbSNicholas Bellinger /* 1078c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Reservation 1079c66ac9dbSNicholas Bellinger */ 1080c66ac9dbSNicholas Bellinger case Opt_res_holder: 1081c66ac9dbSNicholas Bellinger match_int(args, &arg); 1082c66ac9dbSNicholas Bellinger res_holder = arg; 1083c66ac9dbSNicholas Bellinger break; 1084c66ac9dbSNicholas Bellinger case Opt_res_type: 1085c66ac9dbSNicholas Bellinger match_int(args, &arg); 1086c66ac9dbSNicholas Bellinger type = (u8)arg; 1087c66ac9dbSNicholas Bellinger break; 1088c66ac9dbSNicholas Bellinger case Opt_res_scope: 1089c66ac9dbSNicholas Bellinger match_int(args, &arg); 1090c66ac9dbSNicholas Bellinger break; 1091c66ac9dbSNicholas Bellinger case Opt_res_all_tg_pt: 1092c66ac9dbSNicholas Bellinger match_int(args, &arg); 1093c66ac9dbSNicholas Bellinger all_tg_pt = (int)arg; 1094c66ac9dbSNicholas Bellinger break; 1095c66ac9dbSNicholas Bellinger case Opt_mapped_lun: 1096c66ac9dbSNicholas Bellinger match_int(args, &arg); 1097c66ac9dbSNicholas Bellinger mapped_lun = (u32)arg; 1098c66ac9dbSNicholas Bellinger break; 1099c66ac9dbSNicholas Bellinger /* 1100c66ac9dbSNicholas Bellinger * PR APTPL Metadata for Target Port 1101c66ac9dbSNicholas Bellinger */ 1102c66ac9dbSNicholas Bellinger case Opt_target_fabric: 11038d213559SJoern Engel t_fabric = match_strdup(args); 11046d180253SJesper Juhl if (!t_fabric) { 11056d180253SJesper Juhl ret = -ENOMEM; 11066d180253SJesper Juhl goto out; 11076d180253SJesper Juhl } 1108c66ac9dbSNicholas Bellinger break; 1109c66ac9dbSNicholas Bellinger case Opt_target_node: 11108d213559SJoern Engel t_port = match_strdup(args); 11116d180253SJesper Juhl if (!t_port) { 11126d180253SJesper Juhl ret = -ENOMEM; 11136d180253SJesper Juhl goto out; 11146d180253SJesper Juhl } 111560d645a4SDan Carpenter if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { 11166708bb27SAndy Grover pr_err("APTPL metadata target_node=" 1117c66ac9dbSNicholas Bellinger " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", 1118c66ac9dbSNicholas Bellinger PR_APTPL_MAX_TPORT_LEN); 1119c66ac9dbSNicholas Bellinger ret = -EINVAL; 1120c66ac9dbSNicholas Bellinger break; 1121c66ac9dbSNicholas Bellinger } 1122c66ac9dbSNicholas Bellinger break; 1123c66ac9dbSNicholas Bellinger case Opt_tpgt: 1124c66ac9dbSNicholas Bellinger match_int(args, &arg); 1125c66ac9dbSNicholas Bellinger tpgt = (u16)arg; 1126c66ac9dbSNicholas Bellinger break; 1127c66ac9dbSNicholas Bellinger case Opt_port_rtpi: 1128c66ac9dbSNicholas Bellinger match_int(args, &arg); 1129c66ac9dbSNicholas Bellinger break; 1130c66ac9dbSNicholas Bellinger case Opt_target_lun: 1131c66ac9dbSNicholas Bellinger match_int(args, &arg); 1132c66ac9dbSNicholas Bellinger target_lun = (u32)arg; 1133c66ac9dbSNicholas Bellinger break; 1134c66ac9dbSNicholas Bellinger default: 1135c66ac9dbSNicholas Bellinger break; 1136c66ac9dbSNicholas Bellinger } 1137c66ac9dbSNicholas Bellinger } 1138c66ac9dbSNicholas Bellinger 11396708bb27SAndy Grover if (!i_port || !t_port || !sa_res_key) { 11406708bb27SAndy Grover pr_err("Illegal parameters for APTPL registration\n"); 1141c66ac9dbSNicholas Bellinger ret = -EINVAL; 1142c66ac9dbSNicholas Bellinger goto out; 1143c66ac9dbSNicholas Bellinger } 1144c66ac9dbSNicholas Bellinger 1145c66ac9dbSNicholas Bellinger if (res_holder && !(type)) { 11466708bb27SAndy Grover pr_err("Illegal PR type: 0x%02x for reservation" 1147c66ac9dbSNicholas Bellinger " holder\n", type); 1148c66ac9dbSNicholas Bellinger ret = -EINVAL; 1149c66ac9dbSNicholas Bellinger goto out; 1150c66ac9dbSNicholas Bellinger } 1151c66ac9dbSNicholas Bellinger 11520fd97ccfSChristoph Hellwig ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, 1153c66ac9dbSNicholas Bellinger i_port, isid, mapped_lun, t_port, tpgt, target_lun, 1154c66ac9dbSNicholas Bellinger res_holder, all_tg_pt, type); 1155c66ac9dbSNicholas Bellinger out: 11566d180253SJesper Juhl kfree(i_fabric); 11576d180253SJesper Juhl kfree(i_port); 11586d180253SJesper Juhl kfree(isid); 11596d180253SJesper Juhl kfree(t_fabric); 11606d180253SJesper Juhl kfree(t_port); 1161c66ac9dbSNicholas Bellinger kfree(orig); 1162c66ac9dbSNicholas Bellinger return (ret == 0) ? count : ret; 1163c66ac9dbSNicholas Bellinger } 1164c66ac9dbSNicholas Bellinger 1165c66ac9dbSNicholas Bellinger SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); 1166c66ac9dbSNicholas Bellinger 11670fd97ccfSChristoph Hellwig CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); 1168c66ac9dbSNicholas Bellinger 1169c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_dev_pr_attrs[] = { 1170c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_holder.attr, 1171c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_all_tgt_pts.attr, 1172c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_generation.attr, 1173c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_holder_tg_port.attr, 1174c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_registered_i_pts.attr, 1175c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_pr_type.attr, 1176c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_type.attr, 1177c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_active.attr, 1178c66ac9dbSNicholas Bellinger &target_core_dev_pr_res_aptpl_metadata.attr, 1179c66ac9dbSNicholas Bellinger NULL, 1180c66ac9dbSNicholas Bellinger }; 1181c66ac9dbSNicholas Bellinger 1182c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_pr_ops = { 1183c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_pr_attr_show, 1184c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_pr_attr_store, 1185c66ac9dbSNicholas Bellinger }; 1186c66ac9dbSNicholas Bellinger 118791e2e39bSNicholas Bellinger TB_CIT_SETUP(dev_pr, &target_core_dev_pr_ops, NULL, target_core_dev_pr_attrs); 1188c66ac9dbSNicholas Bellinger 118991e2e39bSNicholas Bellinger /* End functions for struct config_item_type tb_dev_pr_cit */ 1190c66ac9dbSNicholas Bellinger 119173112edcSNicholas Bellinger /* Start functions for struct config_item_type tb_dev_cit */ 1192c66ac9dbSNicholas Bellinger 1193c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_info(void *p, char *page) 1194c66ac9dbSNicholas Bellinger { 11950fd97ccfSChristoph Hellwig struct se_device *dev = p; 11960fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1197c66ac9dbSNicholas Bellinger int bl = 0; 1198c66ac9dbSNicholas Bellinger ssize_t read_bytes = 0; 1199c66ac9dbSNicholas Bellinger 12000fd97ccfSChristoph Hellwig transport_dump_dev_state(dev, page, &bl); 1201c66ac9dbSNicholas Bellinger read_bytes += bl; 12020fd97ccfSChristoph Hellwig read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); 1203c66ac9dbSNicholas Bellinger return read_bytes; 1204c66ac9dbSNicholas Bellinger } 1205c66ac9dbSNicholas Bellinger 1206c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_info = { 1207c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1208c66ac9dbSNicholas Bellinger .ca_name = "info", 1209c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO }, 1210c66ac9dbSNicholas Bellinger .show = target_core_show_dev_info, 1211c66ac9dbSNicholas Bellinger .store = NULL, 1212c66ac9dbSNicholas Bellinger }; 1213c66ac9dbSNicholas Bellinger 1214c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_control( 1215c66ac9dbSNicholas Bellinger void *p, 1216c66ac9dbSNicholas Bellinger const char *page, 1217c66ac9dbSNicholas Bellinger size_t count) 1218c66ac9dbSNicholas Bellinger { 12190fd97ccfSChristoph Hellwig struct se_device *dev = p; 12200fd97ccfSChristoph Hellwig struct se_subsystem_api *t = dev->transport; 1221c66ac9dbSNicholas Bellinger 12220fd97ccfSChristoph Hellwig return t->set_configfs_dev_params(dev, page, count); 1223c66ac9dbSNicholas Bellinger } 1224c66ac9dbSNicholas Bellinger 1225c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_control = { 1226c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1227c66ac9dbSNicholas Bellinger .ca_name = "control", 1228c66ac9dbSNicholas Bellinger .ca_mode = S_IWUSR }, 1229c66ac9dbSNicholas Bellinger .show = NULL, 1230c66ac9dbSNicholas Bellinger .store = target_core_store_dev_control, 1231c66ac9dbSNicholas Bellinger }; 1232c66ac9dbSNicholas Bellinger 1233c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_alias(void *p, char *page) 1234c66ac9dbSNicholas Bellinger { 12350fd97ccfSChristoph Hellwig struct se_device *dev = p; 1236c66ac9dbSNicholas Bellinger 12370fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_ALIAS)) 1238c66ac9dbSNicholas Bellinger return 0; 1239c66ac9dbSNicholas Bellinger 12400fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); 1241c66ac9dbSNicholas Bellinger } 1242c66ac9dbSNicholas Bellinger 1243c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_alias( 1244c66ac9dbSNicholas Bellinger void *p, 1245c66ac9dbSNicholas Bellinger const char *page, 1246c66ac9dbSNicholas Bellinger size_t count) 1247c66ac9dbSNicholas Bellinger { 12480fd97ccfSChristoph Hellwig struct se_device *dev = p; 12490fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1250c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1251c66ac9dbSNicholas Bellinger 1252c66ac9dbSNicholas Bellinger if (count > (SE_DEV_ALIAS_LEN-1)) { 12536708bb27SAndy Grover pr_err("alias count: %d exceeds" 1254c66ac9dbSNicholas Bellinger " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, 1255c66ac9dbSNicholas Bellinger SE_DEV_ALIAS_LEN-1); 1256c66ac9dbSNicholas Bellinger return -EINVAL; 1257c66ac9dbSNicholas Bellinger } 1258c66ac9dbSNicholas Bellinger 12590fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); 12603011684cSDan Carpenter if (!read_bytes) 12613011684cSDan Carpenter return -EINVAL; 12620fd97ccfSChristoph Hellwig if (dev->dev_alias[read_bytes - 1] == '\n') 12630fd97ccfSChristoph Hellwig dev->dev_alias[read_bytes - 1] = '\0'; 12640877eafdSSebastian Andrzej Siewior 12650fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_ALIAS; 12663011684cSDan Carpenter 12676708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", 1268c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 12690fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 12700fd97ccfSChristoph Hellwig dev->dev_alias); 1271c66ac9dbSNicholas Bellinger 1272c66ac9dbSNicholas Bellinger return read_bytes; 1273c66ac9dbSNicholas Bellinger } 1274c66ac9dbSNicholas Bellinger 1275c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alias = { 1276c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1277c66ac9dbSNicholas Bellinger .ca_name = "alias", 1278c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1279c66ac9dbSNicholas Bellinger .show = target_core_show_dev_alias, 1280c66ac9dbSNicholas Bellinger .store = target_core_store_dev_alias, 1281c66ac9dbSNicholas Bellinger }; 1282c66ac9dbSNicholas Bellinger 1283c66ac9dbSNicholas Bellinger static ssize_t target_core_show_dev_udev_path(void *p, char *page) 1284c66ac9dbSNicholas Bellinger { 12850fd97ccfSChristoph Hellwig struct se_device *dev = p; 1286c66ac9dbSNicholas Bellinger 12870fd97ccfSChristoph Hellwig if (!(dev->dev_flags & DF_USING_UDEV_PATH)) 1288c66ac9dbSNicholas Bellinger return 0; 1289c66ac9dbSNicholas Bellinger 12900fd97ccfSChristoph Hellwig return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); 1291c66ac9dbSNicholas Bellinger } 1292c66ac9dbSNicholas Bellinger 1293c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_udev_path( 1294c66ac9dbSNicholas Bellinger void *p, 1295c66ac9dbSNicholas Bellinger const char *page, 1296c66ac9dbSNicholas Bellinger size_t count) 1297c66ac9dbSNicholas Bellinger { 12980fd97ccfSChristoph Hellwig struct se_device *dev = p; 12990fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1300c66ac9dbSNicholas Bellinger ssize_t read_bytes; 1301c66ac9dbSNicholas Bellinger 1302c66ac9dbSNicholas Bellinger if (count > (SE_UDEV_PATH_LEN-1)) { 13036708bb27SAndy Grover pr_err("udev_path count: %d exceeds" 1304c66ac9dbSNicholas Bellinger " SE_UDEV_PATH_LEN-1: %u\n", (int)count, 1305c66ac9dbSNicholas Bellinger SE_UDEV_PATH_LEN-1); 1306c66ac9dbSNicholas Bellinger return -EINVAL; 1307c66ac9dbSNicholas Bellinger } 1308c66ac9dbSNicholas Bellinger 13090fd97ccfSChristoph Hellwig read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, 1310c66ac9dbSNicholas Bellinger "%s", page); 13113011684cSDan Carpenter if (!read_bytes) 13123011684cSDan Carpenter return -EINVAL; 13130fd97ccfSChristoph Hellwig if (dev->udev_path[read_bytes - 1] == '\n') 13140fd97ccfSChristoph Hellwig dev->udev_path[read_bytes - 1] = '\0'; 13150877eafdSSebastian Andrzej Siewior 13160fd97ccfSChristoph Hellwig dev->dev_flags |= DF_USING_UDEV_PATH; 13173011684cSDan Carpenter 13186708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", 1319c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 13200fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 13210fd97ccfSChristoph Hellwig dev->udev_path); 1322c66ac9dbSNicholas Bellinger 1323c66ac9dbSNicholas Bellinger return read_bytes; 1324c66ac9dbSNicholas Bellinger } 1325c66ac9dbSNicholas Bellinger 1326c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { 1327c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1328c66ac9dbSNicholas Bellinger .ca_name = "udev_path", 1329c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1330c66ac9dbSNicholas Bellinger .show = target_core_show_dev_udev_path, 1331c66ac9dbSNicholas Bellinger .store = target_core_store_dev_udev_path, 1332c66ac9dbSNicholas Bellinger }; 1333c66ac9dbSNicholas Bellinger 133464146db7SAndy Grover static ssize_t target_core_show_dev_enable(void *p, char *page) 133564146db7SAndy Grover { 133664146db7SAndy Grover struct se_device *dev = p; 133764146db7SAndy Grover 133864146db7SAndy Grover return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); 133964146db7SAndy Grover } 134064146db7SAndy Grover 1341c66ac9dbSNicholas Bellinger static ssize_t target_core_store_dev_enable( 1342c66ac9dbSNicholas Bellinger void *p, 1343c66ac9dbSNicholas Bellinger const char *page, 1344c66ac9dbSNicholas Bellinger size_t count) 1345c66ac9dbSNicholas Bellinger { 13460fd97ccfSChristoph Hellwig struct se_device *dev = p; 1347c66ac9dbSNicholas Bellinger char *ptr; 13480fd97ccfSChristoph Hellwig int ret; 1349c66ac9dbSNicholas Bellinger 1350c66ac9dbSNicholas Bellinger ptr = strstr(page, "1"); 13516708bb27SAndy Grover if (!ptr) { 13526708bb27SAndy Grover pr_err("For dev_enable ops, only valid value" 1353c66ac9dbSNicholas Bellinger " is \"1\"\n"); 1354c66ac9dbSNicholas Bellinger return -EINVAL; 1355c66ac9dbSNicholas Bellinger } 1356c66ac9dbSNicholas Bellinger 13570fd97ccfSChristoph Hellwig ret = target_configure_device(dev); 13580fd97ccfSChristoph Hellwig if (ret) 13590fd97ccfSChristoph Hellwig return ret; 1360c66ac9dbSNicholas Bellinger return count; 1361c66ac9dbSNicholas Bellinger } 1362c66ac9dbSNicholas Bellinger 1363c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_enable = { 1364c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1365c66ac9dbSNicholas Bellinger .ca_name = "enable", 136664146db7SAndy Grover .ca_mode = S_IRUGO | S_IWUSR }, 136764146db7SAndy Grover .show = target_core_show_dev_enable, 1368c66ac9dbSNicholas Bellinger .store = target_core_store_dev_enable, 1369c66ac9dbSNicholas Bellinger }; 1370c66ac9dbSNicholas Bellinger 1371c66ac9dbSNicholas Bellinger static ssize_t target_core_show_alua_lu_gp(void *p, char *page) 1372c66ac9dbSNicholas Bellinger { 13730fd97ccfSChristoph Hellwig struct se_device *dev = p; 1374c66ac9dbSNicholas Bellinger struct config_item *lu_ci; 1375c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1376c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1377c66ac9dbSNicholas Bellinger ssize_t len = 0; 1378c66ac9dbSNicholas Bellinger 1379c66ac9dbSNicholas Bellinger lu_gp_mem = dev->dev_alua_lu_gp_mem; 1380c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1381c87fbd56SChristoph Hellwig return 0; 1382c66ac9dbSNicholas Bellinger 1383c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1384c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 13856708bb27SAndy Grover if (lu_gp) { 1386c66ac9dbSNicholas Bellinger lu_ci = &lu_gp->lu_gp_group.cg_item; 1387c66ac9dbSNicholas Bellinger len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", 1388c66ac9dbSNicholas Bellinger config_item_name(lu_ci), lu_gp->lu_gp_id); 1389c66ac9dbSNicholas Bellinger } 1390c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1391c66ac9dbSNicholas Bellinger 1392c66ac9dbSNicholas Bellinger return len; 1393c66ac9dbSNicholas Bellinger } 1394c66ac9dbSNicholas Bellinger 1395c66ac9dbSNicholas Bellinger static ssize_t target_core_store_alua_lu_gp( 1396c66ac9dbSNicholas Bellinger void *p, 1397c66ac9dbSNicholas Bellinger const char *page, 1398c66ac9dbSNicholas Bellinger size_t count) 1399c66ac9dbSNicholas Bellinger { 14000fd97ccfSChristoph Hellwig struct se_device *dev = p; 14010fd97ccfSChristoph Hellwig struct se_hba *hba = dev->se_hba; 1402c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; 1403c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1404c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1405c66ac9dbSNicholas Bellinger int move = 0; 1406c66ac9dbSNicholas Bellinger 1407c87fbd56SChristoph Hellwig lu_gp_mem = dev->dev_alua_lu_gp_mem; 1408c87fbd56SChristoph Hellwig if (!lu_gp_mem) 1409c87fbd56SChristoph Hellwig return 0; 1410c87fbd56SChristoph Hellwig 1411c66ac9dbSNicholas Bellinger if (count > LU_GROUP_NAME_BUF) { 14126708bb27SAndy Grover pr_err("ALUA LU Group Alias too large!\n"); 1413c66ac9dbSNicholas Bellinger return -EINVAL; 1414c66ac9dbSNicholas Bellinger } 1415c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1416c66ac9dbSNicholas Bellinger memcpy(buf, page, count); 1417c66ac9dbSNicholas Bellinger /* 1418c66ac9dbSNicholas Bellinger * Any ALUA logical unit alias besides "NULL" means we will be 1419c66ac9dbSNicholas Bellinger * making a new group association. 1420c66ac9dbSNicholas Bellinger */ 1421c66ac9dbSNicholas Bellinger if (strcmp(strstrip(buf), "NULL")) { 1422c66ac9dbSNicholas Bellinger /* 1423c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name() will increment reference to 1424c66ac9dbSNicholas Bellinger * struct t10_alua_lu_gp. This reference is released with 1425c66ac9dbSNicholas Bellinger * core_alua_get_lu_gp_by_name below(). 1426c66ac9dbSNicholas Bellinger */ 1427c66ac9dbSNicholas Bellinger lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); 14286708bb27SAndy Grover if (!lu_gp_new) 1429c66ac9dbSNicholas Bellinger return -ENODEV; 1430c66ac9dbSNicholas Bellinger } 1431c66ac9dbSNicholas Bellinger 1432c66ac9dbSNicholas Bellinger spin_lock(&lu_gp_mem->lu_gp_mem_lock); 1433c66ac9dbSNicholas Bellinger lu_gp = lu_gp_mem->lu_gp; 14346708bb27SAndy Grover if (lu_gp) { 1435c66ac9dbSNicholas Bellinger /* 1436c66ac9dbSNicholas Bellinger * Clearing an existing lu_gp association, and replacing 1437c66ac9dbSNicholas Bellinger * with NULL 1438c66ac9dbSNicholas Bellinger */ 14396708bb27SAndy Grover if (!lu_gp_new) { 14406708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing %s/%s" 1441c66ac9dbSNicholas Bellinger " from ALUA LU Group: core/alua/lu_gps/%s, ID:" 1442c66ac9dbSNicholas Bellinger " %hu\n", 1443c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 14440fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1445c66ac9dbSNicholas Bellinger config_item_name(&lu_gp->lu_gp_group.cg_item), 1446c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1447c66ac9dbSNicholas Bellinger 1448c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1449c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1450c66ac9dbSNicholas Bellinger 1451c66ac9dbSNicholas Bellinger return count; 1452c66ac9dbSNicholas Bellinger } 1453c66ac9dbSNicholas Bellinger /* 1454c66ac9dbSNicholas Bellinger * Removing existing association of lu_gp_mem with lu_gp 1455c66ac9dbSNicholas Bellinger */ 1456c66ac9dbSNicholas Bellinger __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); 1457c66ac9dbSNicholas Bellinger move = 1; 1458c66ac9dbSNicholas Bellinger } 1459c66ac9dbSNicholas Bellinger /* 1460c66ac9dbSNicholas Bellinger * Associate lu_gp_mem with lu_gp_new. 1461c66ac9dbSNicholas Bellinger */ 1462c66ac9dbSNicholas Bellinger __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); 1463c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp_mem->lu_gp_mem_lock); 1464c66ac9dbSNicholas Bellinger 14656708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" 1466c66ac9dbSNicholas Bellinger " core/alua/lu_gps/%s, ID: %hu\n", 1467c66ac9dbSNicholas Bellinger (move) ? "Moving" : "Adding", 1468c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 14690fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item), 1470c66ac9dbSNicholas Bellinger config_item_name(&lu_gp_new->lu_gp_group.cg_item), 1471c66ac9dbSNicholas Bellinger lu_gp_new->lu_gp_id); 1472c66ac9dbSNicholas Bellinger 1473c66ac9dbSNicholas Bellinger core_alua_put_lu_gp_from_name(lu_gp_new); 1474c66ac9dbSNicholas Bellinger return count; 1475c66ac9dbSNicholas Bellinger } 1476c66ac9dbSNicholas Bellinger 1477c66ac9dbSNicholas Bellinger static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { 1478c66ac9dbSNicholas Bellinger .attr = { .ca_owner = THIS_MODULE, 1479c66ac9dbSNicholas Bellinger .ca_name = "alua_lu_gp", 1480c66ac9dbSNicholas Bellinger .ca_mode = S_IRUGO | S_IWUSR }, 1481c66ac9dbSNicholas Bellinger .show = target_core_show_alua_lu_gp, 1482c66ac9dbSNicholas Bellinger .store = target_core_store_alua_lu_gp, 1483c66ac9dbSNicholas Bellinger }; 1484c66ac9dbSNicholas Bellinger 1485229d4f11SHannes Reinecke static ssize_t target_core_show_dev_lba_map(void *p, char *page) 1486229d4f11SHannes Reinecke { 1487229d4f11SHannes Reinecke struct se_device *dev = p; 1488229d4f11SHannes Reinecke struct t10_alua_lba_map *map; 1489229d4f11SHannes Reinecke struct t10_alua_lba_map_member *mem; 1490229d4f11SHannes Reinecke char *b = page; 1491229d4f11SHannes Reinecke int bl = 0; 1492229d4f11SHannes Reinecke char state; 1493229d4f11SHannes Reinecke 1494229d4f11SHannes Reinecke spin_lock(&dev->t10_alua.lba_map_lock); 1495229d4f11SHannes Reinecke if (!list_empty(&dev->t10_alua.lba_map_list)) 1496229d4f11SHannes Reinecke bl += sprintf(b + bl, "%u %u\n", 1497229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_size, 1498229d4f11SHannes Reinecke dev->t10_alua.lba_map_segment_multiplier); 1499229d4f11SHannes Reinecke list_for_each_entry(map, &dev->t10_alua.lba_map_list, lba_map_list) { 1500229d4f11SHannes Reinecke bl += sprintf(b + bl, "%llu %llu", 1501229d4f11SHannes Reinecke map->lba_map_first_lba, map->lba_map_last_lba); 1502229d4f11SHannes Reinecke list_for_each_entry(mem, &map->lba_map_mem_list, 1503229d4f11SHannes Reinecke lba_map_mem_list) { 1504229d4f11SHannes Reinecke switch (mem->lba_map_mem_alua_state) { 1505229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED: 1506229d4f11SHannes Reinecke state = 'O'; 1507229d4f11SHannes Reinecke break; 1508229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED: 1509229d4f11SHannes Reinecke state = 'A'; 1510229d4f11SHannes Reinecke break; 1511229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_STANDBY: 1512229d4f11SHannes Reinecke state = 'S'; 1513229d4f11SHannes Reinecke break; 1514229d4f11SHannes Reinecke case ALUA_ACCESS_STATE_UNAVAILABLE: 1515229d4f11SHannes Reinecke state = 'U'; 1516229d4f11SHannes Reinecke break; 1517229d4f11SHannes Reinecke default: 1518229d4f11SHannes Reinecke state = '.'; 1519229d4f11SHannes Reinecke break; 1520229d4f11SHannes Reinecke } 1521229d4f11SHannes Reinecke bl += sprintf(b + bl, " %d:%c", 1522229d4f11SHannes Reinecke mem->lba_map_mem_alua_pg_id, state); 1523229d4f11SHannes Reinecke } 1524229d4f11SHannes Reinecke bl += sprintf(b + bl, "\n"); 1525229d4f11SHannes Reinecke } 1526229d4f11SHannes Reinecke spin_unlock(&dev->t10_alua.lba_map_lock); 1527229d4f11SHannes Reinecke return bl; 1528229d4f11SHannes Reinecke } 1529229d4f11SHannes Reinecke 1530229d4f11SHannes Reinecke static ssize_t target_core_store_dev_lba_map( 1531229d4f11SHannes Reinecke void *p, 1532229d4f11SHannes Reinecke const char *page, 1533229d4f11SHannes Reinecke size_t count) 1534229d4f11SHannes Reinecke { 1535229d4f11SHannes Reinecke struct se_device *dev = p; 1536229d4f11SHannes Reinecke struct t10_alua_lba_map *lba_map = NULL; 1537229d4f11SHannes Reinecke struct list_head lba_list; 1538229d4f11SHannes Reinecke char *map_entries, *ptr; 1539229d4f11SHannes Reinecke char state; 1540229d4f11SHannes Reinecke int pg_num = -1, pg; 1541229d4f11SHannes Reinecke int ret = 0, num = 0, pg_id, alua_state; 1542229d4f11SHannes Reinecke unsigned long start_lba = -1, end_lba = -1; 1543229d4f11SHannes Reinecke unsigned long segment_size = -1, segment_mult = -1; 1544229d4f11SHannes Reinecke 1545229d4f11SHannes Reinecke map_entries = kstrdup(page, GFP_KERNEL); 1546229d4f11SHannes Reinecke if (!map_entries) 1547229d4f11SHannes Reinecke return -ENOMEM; 1548229d4f11SHannes Reinecke 1549229d4f11SHannes Reinecke INIT_LIST_HEAD(&lba_list); 1550229d4f11SHannes Reinecke while ((ptr = strsep(&map_entries, "\n")) != NULL) { 1551229d4f11SHannes Reinecke if (!*ptr) 1552229d4f11SHannes Reinecke continue; 1553229d4f11SHannes Reinecke 1554229d4f11SHannes Reinecke if (num == 0) { 1555229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu\n", 1556229d4f11SHannes Reinecke &segment_size, &segment_mult) != 2) { 1557229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1558229d4f11SHannes Reinecke ret = -EINVAL; 1559229d4f11SHannes Reinecke break; 1560229d4f11SHannes Reinecke } 1561229d4f11SHannes Reinecke num++; 1562229d4f11SHannes Reinecke continue; 1563229d4f11SHannes Reinecke } 1564229d4f11SHannes Reinecke if (sscanf(ptr, "%lu %lu", &start_lba, &end_lba) != 2) { 1565229d4f11SHannes Reinecke pr_err("Invalid line %d\n", num); 1566229d4f11SHannes Reinecke ret = -EINVAL; 1567229d4f11SHannes Reinecke break; 1568229d4f11SHannes Reinecke } 1569229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1570229d4f11SHannes Reinecke if (!ptr) { 1571229d4f11SHannes Reinecke pr_err("Invalid line %d, missing end lba\n", num); 1572229d4f11SHannes Reinecke ret = -EINVAL; 1573229d4f11SHannes Reinecke break; 1574229d4f11SHannes Reinecke } 1575229d4f11SHannes Reinecke ptr++; 1576229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1577229d4f11SHannes Reinecke if (!ptr) { 1578229d4f11SHannes Reinecke pr_err("Invalid line %d, missing state definitions\n", 1579229d4f11SHannes Reinecke num); 1580229d4f11SHannes Reinecke ret = -EINVAL; 1581229d4f11SHannes Reinecke break; 1582229d4f11SHannes Reinecke } 1583229d4f11SHannes Reinecke ptr++; 1584229d4f11SHannes Reinecke lba_map = core_alua_allocate_lba_map(&lba_list, 1585229d4f11SHannes Reinecke start_lba, end_lba); 1586229d4f11SHannes Reinecke if (IS_ERR(lba_map)) { 1587229d4f11SHannes Reinecke ret = PTR_ERR(lba_map); 1588229d4f11SHannes Reinecke break; 1589229d4f11SHannes Reinecke } 1590229d4f11SHannes Reinecke pg = 0; 1591229d4f11SHannes Reinecke while (sscanf(ptr, "%d:%c", &pg_id, &state) == 2) { 1592229d4f11SHannes Reinecke switch (state) { 1593229d4f11SHannes Reinecke case 'O': 1594229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_OPTIMIZED; 1595229d4f11SHannes Reinecke break; 1596229d4f11SHannes Reinecke case 'A': 1597229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_ACTIVE_NON_OPTIMIZED; 1598229d4f11SHannes Reinecke break; 1599229d4f11SHannes Reinecke case 'S': 1600229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_STANDBY; 1601229d4f11SHannes Reinecke break; 1602229d4f11SHannes Reinecke case 'U': 1603229d4f11SHannes Reinecke alua_state = ALUA_ACCESS_STATE_UNAVAILABLE; 1604229d4f11SHannes Reinecke break; 1605229d4f11SHannes Reinecke default: 1606229d4f11SHannes Reinecke pr_err("Invalid ALUA state '%c'\n", state); 1607229d4f11SHannes Reinecke ret = -EINVAL; 1608229d4f11SHannes Reinecke goto out; 1609229d4f11SHannes Reinecke } 1610229d4f11SHannes Reinecke 1611229d4f11SHannes Reinecke ret = core_alua_allocate_lba_map_mem(lba_map, 1612229d4f11SHannes Reinecke pg_id, alua_state); 1613229d4f11SHannes Reinecke if (ret) { 1614229d4f11SHannes Reinecke pr_err("Invalid target descriptor %d:%c " 1615229d4f11SHannes Reinecke "at line %d\n", 1616229d4f11SHannes Reinecke pg_id, state, num); 1617229d4f11SHannes Reinecke break; 1618229d4f11SHannes Reinecke } 1619229d4f11SHannes Reinecke pg++; 1620229d4f11SHannes Reinecke ptr = strchr(ptr, ' '); 1621229d4f11SHannes Reinecke if (ptr) 1622229d4f11SHannes Reinecke ptr++; 1623229d4f11SHannes Reinecke else 1624229d4f11SHannes Reinecke break; 1625229d4f11SHannes Reinecke } 1626229d4f11SHannes Reinecke if (pg_num == -1) 1627229d4f11SHannes Reinecke pg_num = pg; 1628229d4f11SHannes Reinecke else if (pg != pg_num) { 1629229d4f11SHannes Reinecke pr_err("Only %d from %d port groups definitions " 1630229d4f11SHannes Reinecke "at line %d\n", pg, pg_num, num); 1631229d4f11SHannes Reinecke ret = -EINVAL; 1632229d4f11SHannes Reinecke break; 1633229d4f11SHannes Reinecke } 1634229d4f11SHannes Reinecke num++; 1635229d4f11SHannes Reinecke } 1636229d4f11SHannes Reinecke out: 1637229d4f11SHannes Reinecke if (ret) { 1638229d4f11SHannes Reinecke core_alua_free_lba_map(&lba_list); 1639229d4f11SHannes Reinecke count = ret; 1640229d4f11SHannes Reinecke } else 1641229d4f11SHannes Reinecke core_alua_set_lba_map(dev, &lba_list, 1642229d4f11SHannes Reinecke segment_size, segment_mult); 1643229d4f11SHannes Reinecke kfree(map_entries); 1644229d4f11SHannes Reinecke return count; 1645229d4f11SHannes Reinecke } 1646229d4f11SHannes Reinecke 1647229d4f11SHannes Reinecke static struct target_core_configfs_attribute target_core_attr_dev_lba_map = { 1648229d4f11SHannes Reinecke .attr = { .ca_owner = THIS_MODULE, 1649229d4f11SHannes Reinecke .ca_name = "lba_map", 1650229d4f11SHannes Reinecke .ca_mode = S_IRUGO | S_IWUSR }, 1651229d4f11SHannes Reinecke .show = target_core_show_dev_lba_map, 1652229d4f11SHannes Reinecke .store = target_core_store_dev_lba_map, 1653229d4f11SHannes Reinecke }; 1654229d4f11SHannes Reinecke 165573112edcSNicholas Bellinger static struct configfs_attribute *target_core_dev_attrs[] = { 1656c66ac9dbSNicholas Bellinger &target_core_attr_dev_info.attr, 1657c66ac9dbSNicholas Bellinger &target_core_attr_dev_control.attr, 1658c66ac9dbSNicholas Bellinger &target_core_attr_dev_alias.attr, 1659c66ac9dbSNicholas Bellinger &target_core_attr_dev_udev_path.attr, 1660c66ac9dbSNicholas Bellinger &target_core_attr_dev_enable.attr, 1661c66ac9dbSNicholas Bellinger &target_core_attr_dev_alua_lu_gp.attr, 1662229d4f11SHannes Reinecke &target_core_attr_dev_lba_map.attr, 1663c66ac9dbSNicholas Bellinger NULL, 1664c66ac9dbSNicholas Bellinger }; 1665c66ac9dbSNicholas Bellinger 1666c66ac9dbSNicholas Bellinger static void target_core_dev_release(struct config_item *item) 1667c66ac9dbSNicholas Bellinger { 16680fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 16690fd97ccfSChristoph Hellwig struct se_device *dev = 16700fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1671c66ac9dbSNicholas Bellinger 1672c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 16730fd97ccfSChristoph Hellwig target_free_device(dev); 1674c66ac9dbSNicholas Bellinger } 1675c66ac9dbSNicholas Bellinger 1676c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_show(struct config_item *item, 1677c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1678c66ac9dbSNicholas Bellinger char *page) 1679c66ac9dbSNicholas Bellinger { 16800fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 16810fd97ccfSChristoph Hellwig struct se_device *dev = 16820fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1683c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1684c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1685c66ac9dbSNicholas Bellinger 16866708bb27SAndy Grover if (!tc_attr->show) 1687c66ac9dbSNicholas Bellinger return -EINVAL; 1688c66ac9dbSNicholas Bellinger 16890fd97ccfSChristoph Hellwig return tc_attr->show(dev, page); 1690c66ac9dbSNicholas Bellinger } 1691c66ac9dbSNicholas Bellinger 1692c66ac9dbSNicholas Bellinger static ssize_t target_core_dev_store(struct config_item *item, 1693c66ac9dbSNicholas Bellinger struct configfs_attribute *attr, 1694c66ac9dbSNicholas Bellinger const char *page, size_t count) 1695c66ac9dbSNicholas Bellinger { 16960fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 16970fd97ccfSChristoph Hellwig struct se_device *dev = 16980fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 1699c66ac9dbSNicholas Bellinger struct target_core_configfs_attribute *tc_attr = container_of( 1700c66ac9dbSNicholas Bellinger attr, struct target_core_configfs_attribute, attr); 1701c66ac9dbSNicholas Bellinger 17026708bb27SAndy Grover if (!tc_attr->store) 1703c66ac9dbSNicholas Bellinger return -EINVAL; 1704c66ac9dbSNicholas Bellinger 17050fd97ccfSChristoph Hellwig return tc_attr->store(dev, page, count); 1706c66ac9dbSNicholas Bellinger } 1707c66ac9dbSNicholas Bellinger 1708c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_dev_item_ops = { 1709c66ac9dbSNicholas Bellinger .release = target_core_dev_release, 1710c66ac9dbSNicholas Bellinger .show_attribute = target_core_dev_show, 1711c66ac9dbSNicholas Bellinger .store_attribute = target_core_dev_store, 1712c66ac9dbSNicholas Bellinger }; 1713c66ac9dbSNicholas Bellinger 171473112edcSNicholas Bellinger TB_CIT_SETUP(dev, &target_core_dev_item_ops, NULL, target_core_dev_attrs); 1715c66ac9dbSNicholas Bellinger 171673112edcSNicholas Bellinger /* End functions for struct config_item_type tb_dev_cit */ 1717c66ac9dbSNicholas Bellinger 1718c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ 1719c66ac9dbSNicholas Bellinger 1720c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); 1721c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ 1722c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 1723c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 1724c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1725c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name, \ 1726c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_store_attr_##_name); 1727c66ac9dbSNicholas Bellinger 1728c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ 1729c66ac9dbSNicholas Bellinger static struct target_core_alua_lu_gp_attribute \ 1730c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_##_name = \ 1731c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1732c66ac9dbSNicholas Bellinger target_core_alua_lu_gp_show_attr_##_name); 1733c66ac9dbSNicholas Bellinger 1734c66ac9dbSNicholas Bellinger /* 1735c66ac9dbSNicholas Bellinger * lu_gp_id 1736c66ac9dbSNicholas Bellinger */ 1737c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( 1738c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1739c66ac9dbSNicholas Bellinger char *page) 1740c66ac9dbSNicholas Bellinger { 17416708bb27SAndy Grover if (!lu_gp->lu_gp_valid_id) 1742c66ac9dbSNicholas Bellinger return 0; 1743c66ac9dbSNicholas Bellinger 1744c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", lu_gp->lu_gp_id); 1745c66ac9dbSNicholas Bellinger } 1746c66ac9dbSNicholas Bellinger 1747c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( 1748c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1749c66ac9dbSNicholas Bellinger const char *page, 1750c66ac9dbSNicholas Bellinger size_t count) 1751c66ac9dbSNicholas Bellinger { 1752c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; 1753c66ac9dbSNicholas Bellinger unsigned long lu_gp_id; 1754c66ac9dbSNicholas Bellinger int ret; 1755c66ac9dbSNicholas Bellinger 175657103d7fSJingoo Han ret = kstrtoul(page, 0, &lu_gp_id); 1757c66ac9dbSNicholas Bellinger if (ret < 0) { 175857103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 1759c66ac9dbSNicholas Bellinger " lu_gp_id\n", ret); 176057103d7fSJingoo Han return ret; 1761c66ac9dbSNicholas Bellinger } 1762c66ac9dbSNicholas Bellinger if (lu_gp_id > 0x0000ffff) { 17636708bb27SAndy Grover pr_err("ALUA lu_gp_id: %lu exceeds maximum:" 1764c66ac9dbSNicholas Bellinger " 0x0000ffff\n", lu_gp_id); 1765c66ac9dbSNicholas Bellinger return -EINVAL; 1766c66ac9dbSNicholas Bellinger } 1767c66ac9dbSNicholas Bellinger 1768c66ac9dbSNicholas Bellinger ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); 1769c66ac9dbSNicholas Bellinger if (ret < 0) 1770c66ac9dbSNicholas Bellinger return -EINVAL; 1771c66ac9dbSNicholas Bellinger 17726708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" 1773c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s to ID: %hu\n", 1774c66ac9dbSNicholas Bellinger config_item_name(&alua_lu_gp_cg->cg_item), 1775c66ac9dbSNicholas Bellinger lu_gp->lu_gp_id); 1776c66ac9dbSNicholas Bellinger 1777c66ac9dbSNicholas Bellinger return count; 1778c66ac9dbSNicholas Bellinger } 1779c66ac9dbSNicholas Bellinger 1780c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); 1781c66ac9dbSNicholas Bellinger 1782c66ac9dbSNicholas Bellinger /* 1783c66ac9dbSNicholas Bellinger * members 1784c66ac9dbSNicholas Bellinger */ 1785c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_lu_gp_show_attr_members( 1786c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp, 1787c66ac9dbSNicholas Bellinger char *page) 1788c66ac9dbSNicholas Bellinger { 1789c66ac9dbSNicholas Bellinger struct se_device *dev; 1790c66ac9dbSNicholas Bellinger struct se_hba *hba; 1791c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp_member *lu_gp_mem; 1792c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 1793c66ac9dbSNicholas Bellinger unsigned char buf[LU_GROUP_NAME_BUF]; 1794c66ac9dbSNicholas Bellinger 1795c66ac9dbSNicholas Bellinger memset(buf, 0, LU_GROUP_NAME_BUF); 1796c66ac9dbSNicholas Bellinger 1797c66ac9dbSNicholas Bellinger spin_lock(&lu_gp->lu_gp_lock); 1798c66ac9dbSNicholas Bellinger list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { 1799c66ac9dbSNicholas Bellinger dev = lu_gp_mem->lu_gp_mem_dev; 18000fd97ccfSChristoph Hellwig hba = dev->se_hba; 1801c66ac9dbSNicholas Bellinger 1802c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", 1803c66ac9dbSNicholas Bellinger config_item_name(&hba->hba_group.cg_item), 18040fd97ccfSChristoph Hellwig config_item_name(&dev->dev_group.cg_item)); 1805c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 1806c66ac9dbSNicholas Bellinger 1807c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 18086708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 1809c66ac9dbSNicholas Bellinger "_members buffer\n"); 1810c66ac9dbSNicholas Bellinger break; 1811c66ac9dbSNicholas Bellinger } 1812c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 1813c66ac9dbSNicholas Bellinger len += cur_len; 1814c66ac9dbSNicholas Bellinger } 1815c66ac9dbSNicholas Bellinger spin_unlock(&lu_gp->lu_gp_lock); 1816c66ac9dbSNicholas Bellinger 1817c66ac9dbSNicholas Bellinger return len; 1818c66ac9dbSNicholas Bellinger } 1819c66ac9dbSNicholas Bellinger 1820c66ac9dbSNicholas Bellinger SE_DEV_ALUA_LU_ATTR_RO(members); 1821c66ac9dbSNicholas Bellinger 1822c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); 1823c66ac9dbSNicholas Bellinger 1824c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { 1825c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_lu_gp_id.attr, 1826c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_members.attr, 1827c66ac9dbSNicholas Bellinger NULL, 1828c66ac9dbSNicholas Bellinger }; 1829c66ac9dbSNicholas Bellinger 18301f6fe7cbSNicholas Bellinger static void target_core_alua_lu_gp_release(struct config_item *item) 18311f6fe7cbSNicholas Bellinger { 18321f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 18331f6fe7cbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 18341f6fe7cbSNicholas Bellinger 18351f6fe7cbSNicholas Bellinger core_alua_free_lu_gp(lu_gp); 18361f6fe7cbSNicholas Bellinger } 18371f6fe7cbSNicholas Bellinger 1838c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_lu_gp_ops = { 18391f6fe7cbSNicholas Bellinger .release = target_core_alua_lu_gp_release, 1840c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_lu_gp_attr_show, 1841c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_lu_gp_attr_store, 1842c66ac9dbSNicholas Bellinger }; 1843c66ac9dbSNicholas Bellinger 1844c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gp_cit = { 1845c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_lu_gp_ops, 1846c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_lu_gp_attrs, 1847c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1848c66ac9dbSNicholas Bellinger }; 1849c66ac9dbSNicholas Bellinger 1850c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ 1851c66ac9dbSNicholas Bellinger 1852c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ 1853c66ac9dbSNicholas Bellinger 1854c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_lu_gp( 1855c66ac9dbSNicholas Bellinger struct config_group *group, 1856c66ac9dbSNicholas Bellinger const char *name) 1857c66ac9dbSNicholas Bellinger { 1858c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 1859c66ac9dbSNicholas Bellinger struct config_group *alua_lu_gp_cg = NULL; 1860c66ac9dbSNicholas Bellinger struct config_item *alua_lu_gp_ci = NULL; 1861c66ac9dbSNicholas Bellinger 1862c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp(name, 0); 1863c66ac9dbSNicholas Bellinger if (IS_ERR(lu_gp)) 1864c66ac9dbSNicholas Bellinger return NULL; 1865c66ac9dbSNicholas Bellinger 1866c66ac9dbSNicholas Bellinger alua_lu_gp_cg = &lu_gp->lu_gp_group; 1867c66ac9dbSNicholas Bellinger alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; 1868c66ac9dbSNicholas Bellinger 1869c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_lu_gp_cg, name, 1870c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 1871c66ac9dbSNicholas Bellinger 18726708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" 1873c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s\n", 1874c66ac9dbSNicholas Bellinger config_item_name(alua_lu_gp_ci)); 1875c66ac9dbSNicholas Bellinger 1876c66ac9dbSNicholas Bellinger return alua_lu_gp_cg; 1877c66ac9dbSNicholas Bellinger 1878c66ac9dbSNicholas Bellinger } 1879c66ac9dbSNicholas Bellinger 1880c66ac9dbSNicholas Bellinger static void target_core_alua_drop_lu_gp( 1881c66ac9dbSNicholas Bellinger struct config_group *group, 1882c66ac9dbSNicholas Bellinger struct config_item *item) 1883c66ac9dbSNicholas Bellinger { 1884c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), 1885c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp, lu_gp_group); 1886c66ac9dbSNicholas Bellinger 18876708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" 1888c66ac9dbSNicholas Bellinger " Group: core/alua/lu_gps/%s, ID: %hu\n", 1889c66ac9dbSNicholas Bellinger config_item_name(item), lu_gp->lu_gp_id); 18901f6fe7cbSNicholas Bellinger /* 18911f6fe7cbSNicholas Bellinger * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() 18921f6fe7cbSNicholas Bellinger * -> target_core_alua_lu_gp_release() 18931f6fe7cbSNicholas Bellinger */ 1894c66ac9dbSNicholas Bellinger config_item_put(item); 1895c66ac9dbSNicholas Bellinger } 1896c66ac9dbSNicholas Bellinger 1897c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { 1898c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_lu_gp, 1899c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_lu_gp, 1900c66ac9dbSNicholas Bellinger }; 1901c66ac9dbSNicholas Bellinger 1902c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_lu_gps_cit = { 1903c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 1904c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_alua_lu_gps_group_ops, 1905c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 1906c66ac9dbSNicholas Bellinger }; 1907c66ac9dbSNicholas Bellinger 1908c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ 1909c66ac9dbSNicholas Bellinger 1910c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 1911c66ac9dbSNicholas Bellinger 1912c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); 1913c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ 1914c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 1915c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 1916c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 1917c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name, \ 1918c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_store_attr_##_name); 1919c66ac9dbSNicholas Bellinger 1920c66ac9dbSNicholas Bellinger #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ 1921c66ac9dbSNicholas Bellinger static struct target_core_alua_tg_pt_gp_attribute \ 1922c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_##_name = \ 1923c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 1924c66ac9dbSNicholas Bellinger target_core_alua_tg_pt_gp_show_attr_##_name); 1925c66ac9dbSNicholas Bellinger 1926c66ac9dbSNicholas Bellinger /* 1927c66ac9dbSNicholas Bellinger * alua_access_state 1928c66ac9dbSNicholas Bellinger */ 1929c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( 1930c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 1931c66ac9dbSNicholas Bellinger char *page) 1932c66ac9dbSNicholas Bellinger { 1933c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", 1934c66ac9dbSNicholas Bellinger atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); 1935c66ac9dbSNicholas Bellinger } 1936c66ac9dbSNicholas Bellinger 1937c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( 1938c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 1939c66ac9dbSNicholas Bellinger const char *page, 1940c66ac9dbSNicholas Bellinger size_t count) 1941c66ac9dbSNicholas Bellinger { 19420fd97ccfSChristoph Hellwig struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; 1943c66ac9dbSNicholas Bellinger unsigned long tmp; 1944c66ac9dbSNicholas Bellinger int new_state, ret; 1945c66ac9dbSNicholas Bellinger 19466708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 1947125d0119SHannes Reinecke pr_err("Unable to do implicit ALUA on non valid" 1948c66ac9dbSNicholas Bellinger " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); 1949c66ac9dbSNicholas Bellinger return -EINVAL; 1950c66ac9dbSNicholas Bellinger } 1951f1453773SNicholas Bellinger if (!(dev->dev_flags & DF_CONFIGURED)) { 1952f1453773SNicholas Bellinger pr_err("Unable to set alua_access_state while device is" 1953f1453773SNicholas Bellinger " not configured\n"); 1954f1453773SNicholas Bellinger return -ENODEV; 1955f1453773SNicholas Bellinger } 1956c66ac9dbSNicholas Bellinger 195757103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 1958c66ac9dbSNicholas Bellinger if (ret < 0) { 19596708bb27SAndy Grover pr_err("Unable to extract new ALUA access state from" 1960c66ac9dbSNicholas Bellinger " %s\n", page); 196157103d7fSJingoo Han return ret; 1962c66ac9dbSNicholas Bellinger } 1963c66ac9dbSNicholas Bellinger new_state = (int)tmp; 1964c66ac9dbSNicholas Bellinger 1965125d0119SHannes Reinecke if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICIT_ALUA)) { 1966125d0119SHannes Reinecke pr_err("Unable to process implicit configfs ALUA" 1967125d0119SHannes Reinecke " transition while TPGS_IMPLICIT_ALUA is disabled\n"); 1968c66ac9dbSNicholas Bellinger return -EINVAL; 1969c66ac9dbSNicholas Bellinger } 1970c66094bfSHannes Reinecke if (tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_EXPLICIT_ALUA && 1971c66094bfSHannes Reinecke new_state == ALUA_ACCESS_STATE_LBA_DEPENDENT) { 1972c66094bfSHannes Reinecke /* LBA DEPENDENT is only allowed with implicit ALUA */ 1973c66094bfSHannes Reinecke pr_err("Unable to process implicit configfs ALUA transition" 1974c66094bfSHannes Reinecke " while explicit ALUA management is enabled\n"); 1975c66094bfSHannes Reinecke return -EINVAL; 1976c66094bfSHannes Reinecke } 1977c66ac9dbSNicholas Bellinger 19780fd97ccfSChristoph Hellwig ret = core_alua_do_port_transition(tg_pt_gp, dev, 1979c66ac9dbSNicholas Bellinger NULL, NULL, new_state, 0); 1980c66ac9dbSNicholas Bellinger return (!ret) ? count : -EINVAL; 1981c66ac9dbSNicholas Bellinger } 1982c66ac9dbSNicholas Bellinger 1983c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); 1984c66ac9dbSNicholas Bellinger 1985c66ac9dbSNicholas Bellinger /* 1986c66ac9dbSNicholas Bellinger * alua_access_status 1987c66ac9dbSNicholas Bellinger */ 1988c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( 1989c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 1990c66ac9dbSNicholas Bellinger char *page) 1991c66ac9dbSNicholas Bellinger { 1992c66ac9dbSNicholas Bellinger return sprintf(page, "%s\n", 1993c66ac9dbSNicholas Bellinger core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); 1994c66ac9dbSNicholas Bellinger } 1995c66ac9dbSNicholas Bellinger 1996c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( 1997c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 1998c66ac9dbSNicholas Bellinger const char *page, 1999c66ac9dbSNicholas Bellinger size_t count) 2000c66ac9dbSNicholas Bellinger { 2001c66ac9dbSNicholas Bellinger unsigned long tmp; 2002c66ac9dbSNicholas Bellinger int new_status, ret; 2003c66ac9dbSNicholas Bellinger 20046708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) { 20056708bb27SAndy Grover pr_err("Unable to do set ALUA access status on non" 2006c66ac9dbSNicholas Bellinger " valid tg_pt_gp ID: %hu\n", 2007c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_valid_id); 2008c66ac9dbSNicholas Bellinger return -EINVAL; 2009c66ac9dbSNicholas Bellinger } 2010c66ac9dbSNicholas Bellinger 201157103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2012c66ac9dbSNicholas Bellinger if (ret < 0) { 20136708bb27SAndy Grover pr_err("Unable to extract new ALUA access status" 2014c66ac9dbSNicholas Bellinger " from %s\n", page); 201557103d7fSJingoo Han return ret; 2016c66ac9dbSNicholas Bellinger } 2017c66ac9dbSNicholas Bellinger new_status = (int)tmp; 2018c66ac9dbSNicholas Bellinger 2019c66ac9dbSNicholas Bellinger if ((new_status != ALUA_STATUS_NONE) && 2020125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_EXPLICIT_STPG) && 2021125d0119SHannes Reinecke (new_status != ALUA_STATUS_ALTERED_BY_IMPLICIT_ALUA)) { 20226708bb27SAndy Grover pr_err("Illegal ALUA access status: 0x%02x\n", 2023c66ac9dbSNicholas Bellinger new_status); 2024c66ac9dbSNicholas Bellinger return -EINVAL; 2025c66ac9dbSNicholas Bellinger } 2026c66ac9dbSNicholas Bellinger 2027c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_alua_access_status = new_status; 2028c66ac9dbSNicholas Bellinger return count; 2029c66ac9dbSNicholas Bellinger } 2030c66ac9dbSNicholas Bellinger 2031c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); 2032c66ac9dbSNicholas Bellinger 2033c66ac9dbSNicholas Bellinger /* 2034c66ac9dbSNicholas Bellinger * alua_access_type 2035c66ac9dbSNicholas Bellinger */ 2036c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( 2037c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2038c66ac9dbSNicholas Bellinger char *page) 2039c66ac9dbSNicholas Bellinger { 2040c66ac9dbSNicholas Bellinger return core_alua_show_access_type(tg_pt_gp, page); 2041c66ac9dbSNicholas Bellinger } 2042c66ac9dbSNicholas Bellinger 2043c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( 2044c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2045c66ac9dbSNicholas Bellinger const char *page, 2046c66ac9dbSNicholas Bellinger size_t count) 2047c66ac9dbSNicholas Bellinger { 2048c66ac9dbSNicholas Bellinger return core_alua_store_access_type(tg_pt_gp, page, count); 2049c66ac9dbSNicholas Bellinger } 2050c66ac9dbSNicholas Bellinger 2051c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); 2052c66ac9dbSNicholas Bellinger 2053c66ac9dbSNicholas Bellinger /* 20546be526c4SHannes Reinecke * alua_supported_states 20556be526c4SHannes Reinecke */ 2056b0a382c5SHannes Reinecke 2057b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_SHOW(_name, _var, _bit) \ 2058b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_support_##_name( \ 2059b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, char *p) \ 2060b0a382c5SHannes Reinecke { \ 2061b0a382c5SHannes Reinecke return sprintf(p, "%d\n", !!(t->_var & _bit)); \ 20626be526c4SHannes Reinecke } 20636be526c4SHannes Reinecke 2064b0a382c5SHannes Reinecke #define SE_DEV_ALUA_SUPPORT_STATE_STORE(_name, _var, _bit) \ 2065b0a382c5SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_support_##_name(\ 2066b0a382c5SHannes Reinecke struct t10_alua_tg_pt_gp *t, const char *p, size_t c) \ 2067b0a382c5SHannes Reinecke { \ 2068b0a382c5SHannes Reinecke unsigned long tmp; \ 2069b0a382c5SHannes Reinecke int ret; \ 2070b0a382c5SHannes Reinecke \ 2071b0a382c5SHannes Reinecke if (!t->tg_pt_gp_valid_id) { \ 2072b0a382c5SHannes Reinecke pr_err("Unable to do set ##_name ALUA state on non" \ 2073b0a382c5SHannes Reinecke " valid tg_pt_gp ID: %hu\n", \ 2074b0a382c5SHannes Reinecke t->tg_pt_gp_valid_id); \ 2075b0a382c5SHannes Reinecke return -EINVAL; \ 2076b0a382c5SHannes Reinecke } \ 2077b0a382c5SHannes Reinecke \ 2078b0a382c5SHannes Reinecke ret = kstrtoul(p, 0, &tmp); \ 2079b0a382c5SHannes Reinecke if (ret < 0) { \ 2080b0a382c5SHannes Reinecke pr_err("Invalid value '%s', must be '0' or '1'\n", p); \ 2081b0a382c5SHannes Reinecke return -EINVAL; \ 2082b0a382c5SHannes Reinecke } \ 2083b0a382c5SHannes Reinecke if (tmp > 1) { \ 2084b0a382c5SHannes Reinecke pr_err("Invalid value '%ld', must be '0' or '1'\n", tmp); \ 2085b0a382c5SHannes Reinecke return -EINVAL; \ 2086b0a382c5SHannes Reinecke } \ 20871f0b030cSSebastian Herbszt if (tmp) \ 2088b0a382c5SHannes Reinecke t->_var |= _bit; \ 2089b0a382c5SHannes Reinecke else \ 2090b0a382c5SHannes Reinecke t->_var &= ~_bit; \ 2091b0a382c5SHannes Reinecke \ 2092b0a382c5SHannes Reinecke return c; \ 20936be526c4SHannes Reinecke } 20946be526c4SHannes Reinecke 2095b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(transitioning, 2096b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2097b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(transitioning, 2098b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_T_SUP); 2099b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_transitioning, S_IRUGO | S_IWUSR); 21006be526c4SHannes Reinecke 2101b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(offline, 2102b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2103b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(offline, 2104b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_O_SUP); 2105b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_offline, S_IRUGO | S_IWUSR); 21066be526c4SHannes Reinecke 2107b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(lba_dependent, 2108b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2109b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(lba_dependent, 2110b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_LBD_SUP); 2111c66094bfSHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_lba_dependent, S_IRUGO); 21126be526c4SHannes Reinecke 2113b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(unavailable, 2114b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2115b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(unavailable, 2116b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_U_SUP); 2117b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_unavailable, S_IRUGO | S_IWUSR); 21186be526c4SHannes Reinecke 2119b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(standby, 2120b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2121b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(standby, 2122b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_S_SUP); 2123b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_standby, S_IRUGO | S_IWUSR); 2124b0a382c5SHannes Reinecke 2125b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_optimized, 2126b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2127b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_optimized, 2128b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AO_SUP); 2129b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_optimized, S_IRUGO | S_IWUSR); 2130b0a382c5SHannes Reinecke 2131b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_SHOW(active_nonoptimized, 2132b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2133b0a382c5SHannes Reinecke SE_DEV_ALUA_SUPPORT_STATE_STORE(active_nonoptimized, 2134b0a382c5SHannes Reinecke tg_pt_gp_alua_supported_states, ALUA_AN_SUP); 2135b0a382c5SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(alua_support_active_nonoptimized, S_IRUGO | S_IWUSR); 21366be526c4SHannes Reinecke 21376be526c4SHannes Reinecke /* 2138c66ac9dbSNicholas Bellinger * alua_write_metadata 2139c66ac9dbSNicholas Bellinger */ 2140c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( 2141c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2142c66ac9dbSNicholas Bellinger char *page) 2143c66ac9dbSNicholas Bellinger { 2144c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); 2145c66ac9dbSNicholas Bellinger } 2146c66ac9dbSNicholas Bellinger 2147c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( 2148c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2149c66ac9dbSNicholas Bellinger const char *page, 2150c66ac9dbSNicholas Bellinger size_t count) 2151c66ac9dbSNicholas Bellinger { 2152c66ac9dbSNicholas Bellinger unsigned long tmp; 2153c66ac9dbSNicholas Bellinger int ret; 2154c66ac9dbSNicholas Bellinger 215557103d7fSJingoo Han ret = kstrtoul(page, 0, &tmp); 2156c66ac9dbSNicholas Bellinger if (ret < 0) { 21576708bb27SAndy Grover pr_err("Unable to extract alua_write_metadata\n"); 215857103d7fSJingoo Han return ret; 2159c66ac9dbSNicholas Bellinger } 2160c66ac9dbSNicholas Bellinger 2161c66ac9dbSNicholas Bellinger if ((tmp != 0) && (tmp != 1)) { 21626708bb27SAndy Grover pr_err("Illegal value for alua_write_metadata:" 2163c66ac9dbSNicholas Bellinger " %lu\n", tmp); 2164c66ac9dbSNicholas Bellinger return -EINVAL; 2165c66ac9dbSNicholas Bellinger } 2166c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; 2167c66ac9dbSNicholas Bellinger 2168c66ac9dbSNicholas Bellinger return count; 2169c66ac9dbSNicholas Bellinger } 2170c66ac9dbSNicholas Bellinger 2171c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); 2172c66ac9dbSNicholas Bellinger 2173c66ac9dbSNicholas Bellinger 2174c66ac9dbSNicholas Bellinger 2175c66ac9dbSNicholas Bellinger /* 2176c66ac9dbSNicholas Bellinger * nonop_delay_msecs 2177c66ac9dbSNicholas Bellinger */ 2178c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( 2179c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2180c66ac9dbSNicholas Bellinger char *page) 2181c66ac9dbSNicholas Bellinger { 2182c66ac9dbSNicholas Bellinger return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); 2183c66ac9dbSNicholas Bellinger 2184c66ac9dbSNicholas Bellinger } 2185c66ac9dbSNicholas Bellinger 2186c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( 2187c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2188c66ac9dbSNicholas Bellinger const char *page, 2189c66ac9dbSNicholas Bellinger size_t count) 2190c66ac9dbSNicholas Bellinger { 2191c66ac9dbSNicholas Bellinger return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); 2192c66ac9dbSNicholas Bellinger } 2193c66ac9dbSNicholas Bellinger 2194c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); 2195c66ac9dbSNicholas Bellinger 2196c66ac9dbSNicholas Bellinger /* 2197c66ac9dbSNicholas Bellinger * trans_delay_msecs 2198c66ac9dbSNicholas Bellinger */ 2199c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( 2200c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2201c66ac9dbSNicholas Bellinger char *page) 2202c66ac9dbSNicholas Bellinger { 2203c66ac9dbSNicholas Bellinger return core_alua_show_trans_delay_msecs(tg_pt_gp, page); 2204c66ac9dbSNicholas Bellinger } 2205c66ac9dbSNicholas Bellinger 2206c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( 2207c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2208c66ac9dbSNicholas Bellinger const char *page, 2209c66ac9dbSNicholas Bellinger size_t count) 2210c66ac9dbSNicholas Bellinger { 2211c66ac9dbSNicholas Bellinger return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); 2212c66ac9dbSNicholas Bellinger } 2213c66ac9dbSNicholas Bellinger 2214c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); 2215c66ac9dbSNicholas Bellinger 2216c66ac9dbSNicholas Bellinger /* 2217125d0119SHannes Reinecke * implicit_trans_secs 22185b9a4d72SNicholas Bellinger */ 2219125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_show_attr_implicit_trans_secs( 22205b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 22215b9a4d72SNicholas Bellinger char *page) 22225b9a4d72SNicholas Bellinger { 2223125d0119SHannes Reinecke return core_alua_show_implicit_trans_secs(tg_pt_gp, page); 22245b9a4d72SNicholas Bellinger } 22255b9a4d72SNicholas Bellinger 2226125d0119SHannes Reinecke static ssize_t target_core_alua_tg_pt_gp_store_attr_implicit_trans_secs( 22275b9a4d72SNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 22285b9a4d72SNicholas Bellinger const char *page, 22295b9a4d72SNicholas Bellinger size_t count) 22305b9a4d72SNicholas Bellinger { 2231125d0119SHannes Reinecke return core_alua_store_implicit_trans_secs(tg_pt_gp, page, count); 22325b9a4d72SNicholas Bellinger } 22335b9a4d72SNicholas Bellinger 2234125d0119SHannes Reinecke SE_DEV_ALUA_TG_PT_ATTR(implicit_trans_secs, S_IRUGO | S_IWUSR); 22355b9a4d72SNicholas Bellinger 22365b9a4d72SNicholas Bellinger /* 2237c66ac9dbSNicholas Bellinger * preferred 2238c66ac9dbSNicholas Bellinger */ 2239c66ac9dbSNicholas Bellinger 2240c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( 2241c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2242c66ac9dbSNicholas Bellinger char *page) 2243c66ac9dbSNicholas Bellinger { 2244c66ac9dbSNicholas Bellinger return core_alua_show_preferred_bit(tg_pt_gp, page); 2245c66ac9dbSNicholas Bellinger } 2246c66ac9dbSNicholas Bellinger 2247c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( 2248c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2249c66ac9dbSNicholas Bellinger const char *page, 2250c66ac9dbSNicholas Bellinger size_t count) 2251c66ac9dbSNicholas Bellinger { 2252c66ac9dbSNicholas Bellinger return core_alua_store_preferred_bit(tg_pt_gp, page, count); 2253c66ac9dbSNicholas Bellinger } 2254c66ac9dbSNicholas Bellinger 2255c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); 2256c66ac9dbSNicholas Bellinger 2257c66ac9dbSNicholas Bellinger /* 2258c66ac9dbSNicholas Bellinger * tg_pt_gp_id 2259c66ac9dbSNicholas Bellinger */ 2260c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( 2261c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2262c66ac9dbSNicholas Bellinger char *page) 2263c66ac9dbSNicholas Bellinger { 22646708bb27SAndy Grover if (!tg_pt_gp->tg_pt_gp_valid_id) 2265c66ac9dbSNicholas Bellinger return 0; 2266c66ac9dbSNicholas Bellinger 2267c66ac9dbSNicholas Bellinger return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); 2268c66ac9dbSNicholas Bellinger } 2269c66ac9dbSNicholas Bellinger 2270c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( 2271c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2272c66ac9dbSNicholas Bellinger const char *page, 2273c66ac9dbSNicholas Bellinger size_t count) 2274c66ac9dbSNicholas Bellinger { 2275c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2276c66ac9dbSNicholas Bellinger unsigned long tg_pt_gp_id; 2277c66ac9dbSNicholas Bellinger int ret; 2278c66ac9dbSNicholas Bellinger 227957103d7fSJingoo Han ret = kstrtoul(page, 0, &tg_pt_gp_id); 2280c66ac9dbSNicholas Bellinger if (ret < 0) { 228157103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2282c66ac9dbSNicholas Bellinger " tg_pt_gp_id\n", ret); 228357103d7fSJingoo Han return ret; 2284c66ac9dbSNicholas Bellinger } 2285c66ac9dbSNicholas Bellinger if (tg_pt_gp_id > 0x0000ffff) { 22866708bb27SAndy Grover pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" 2287c66ac9dbSNicholas Bellinger " 0x0000ffff\n", tg_pt_gp_id); 2288c66ac9dbSNicholas Bellinger return -EINVAL; 2289c66ac9dbSNicholas Bellinger } 2290c66ac9dbSNicholas Bellinger 2291c66ac9dbSNicholas Bellinger ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); 2292c66ac9dbSNicholas Bellinger if (ret < 0) 2293c66ac9dbSNicholas Bellinger return -EINVAL; 2294c66ac9dbSNicholas Bellinger 22956708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " 2296c66ac9dbSNicholas Bellinger "core/alua/tg_pt_gps/%s to ID: %hu\n", 2297c66ac9dbSNicholas Bellinger config_item_name(&alua_tg_pt_gp_cg->cg_item), 2298c66ac9dbSNicholas Bellinger tg_pt_gp->tg_pt_gp_id); 2299c66ac9dbSNicholas Bellinger 2300c66ac9dbSNicholas Bellinger return count; 2301c66ac9dbSNicholas Bellinger } 2302c66ac9dbSNicholas Bellinger 2303c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); 2304c66ac9dbSNicholas Bellinger 2305c66ac9dbSNicholas Bellinger /* 2306c66ac9dbSNicholas Bellinger * members 2307c66ac9dbSNicholas Bellinger */ 2308c66ac9dbSNicholas Bellinger static ssize_t target_core_alua_tg_pt_gp_show_attr_members( 2309c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp, 2310c66ac9dbSNicholas Bellinger char *page) 2311c66ac9dbSNicholas Bellinger { 2312c66ac9dbSNicholas Bellinger struct se_port *port; 2313c66ac9dbSNicholas Bellinger struct se_portal_group *tpg; 2314c66ac9dbSNicholas Bellinger struct se_lun *lun; 2315c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; 2316c66ac9dbSNicholas Bellinger ssize_t len = 0, cur_len; 2317c66ac9dbSNicholas Bellinger unsigned char buf[TG_PT_GROUP_NAME_BUF]; 2318c66ac9dbSNicholas Bellinger 2319c66ac9dbSNicholas Bellinger memset(buf, 0, TG_PT_GROUP_NAME_BUF); 2320c66ac9dbSNicholas Bellinger 2321c66ac9dbSNicholas Bellinger spin_lock(&tg_pt_gp->tg_pt_gp_lock); 2322c66ac9dbSNicholas Bellinger list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, 2323c66ac9dbSNicholas Bellinger tg_pt_gp_mem_list) { 2324c66ac9dbSNicholas Bellinger port = tg_pt_gp_mem->tg_pt; 2325c66ac9dbSNicholas Bellinger tpg = port->sep_tpg; 2326c66ac9dbSNicholas Bellinger lun = port->sep_lun; 2327c66ac9dbSNicholas Bellinger 2328c66ac9dbSNicholas Bellinger cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" 2329e3d6f909SAndy Grover "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), 2330e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_wwn(tpg), 2331e3d6f909SAndy Grover tpg->se_tpg_tfo->tpg_get_tag(tpg), 2332c66ac9dbSNicholas Bellinger config_item_name(&lun->lun_group.cg_item)); 2333c66ac9dbSNicholas Bellinger cur_len++; /* Extra byte for NULL terminator */ 2334c66ac9dbSNicholas Bellinger 2335c66ac9dbSNicholas Bellinger if ((cur_len + len) > PAGE_SIZE) { 23366708bb27SAndy Grover pr_warn("Ran out of lu_gp_show_attr" 2337c66ac9dbSNicholas Bellinger "_members buffer\n"); 2338c66ac9dbSNicholas Bellinger break; 2339c66ac9dbSNicholas Bellinger } 2340c66ac9dbSNicholas Bellinger memcpy(page+len, buf, cur_len); 2341c66ac9dbSNicholas Bellinger len += cur_len; 2342c66ac9dbSNicholas Bellinger } 2343c66ac9dbSNicholas Bellinger spin_unlock(&tg_pt_gp->tg_pt_gp_lock); 2344c66ac9dbSNicholas Bellinger 2345c66ac9dbSNicholas Bellinger return len; 2346c66ac9dbSNicholas Bellinger } 2347c66ac9dbSNicholas Bellinger 2348c66ac9dbSNicholas Bellinger SE_DEV_ALUA_TG_PT_ATTR_RO(members); 2349c66ac9dbSNicholas Bellinger 2350c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, 2351c66ac9dbSNicholas Bellinger tg_pt_gp_group); 2352c66ac9dbSNicholas Bellinger 2353c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { 2354c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_state.attr, 2355c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_status.attr, 2356c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_access_type.attr, 2357b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_transitioning.attr, 2358b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_offline.attr, 2359b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_lba_dependent.attr, 2360b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_unavailable.attr, 2361b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_standby.attr, 2362b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_nonoptimized.attr, 2363b0a382c5SHannes Reinecke &target_core_alua_tg_pt_gp_alua_support_active_optimized.attr, 2364c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_alua_write_metadata.attr, 2365c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, 2366c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, 2367125d0119SHannes Reinecke &target_core_alua_tg_pt_gp_implicit_trans_secs.attr, 2368c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_preferred.attr, 2369c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, 2370c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_members.attr, 2371c66ac9dbSNicholas Bellinger NULL, 2372c66ac9dbSNicholas Bellinger }; 2373c66ac9dbSNicholas Bellinger 23741f6fe7cbSNicholas Bellinger static void target_core_alua_tg_pt_gp_release(struct config_item *item) 23751f6fe7cbSNicholas Bellinger { 23761f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 23771f6fe7cbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 23781f6fe7cbSNicholas Bellinger 23791f6fe7cbSNicholas Bellinger core_alua_free_tg_pt_gp(tg_pt_gp); 23801f6fe7cbSNicholas Bellinger } 23811f6fe7cbSNicholas Bellinger 2382c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { 23831f6fe7cbSNicholas Bellinger .release = target_core_alua_tg_pt_gp_release, 2384c66ac9dbSNicholas Bellinger .show_attribute = target_core_alua_tg_pt_gp_attr_show, 2385c66ac9dbSNicholas Bellinger .store_attribute = target_core_alua_tg_pt_gp_attr_store, 2386c66ac9dbSNicholas Bellinger }; 2387c66ac9dbSNicholas Bellinger 2388c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_tg_pt_gp_cit = { 2389c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_alua_tg_pt_gp_ops, 2390c66ac9dbSNicholas Bellinger .ct_attrs = target_core_alua_tg_pt_gp_attrs, 2391c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2392c66ac9dbSNicholas Bellinger }; 2393c66ac9dbSNicholas Bellinger 2394c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ 2395c66ac9dbSNicholas Bellinger 239672aca57bSNicholas Bellinger /* Start functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2397c66ac9dbSNicholas Bellinger 2398c66ac9dbSNicholas Bellinger static struct config_group *target_core_alua_create_tg_pt_gp( 2399c66ac9dbSNicholas Bellinger struct config_group *group, 2400c66ac9dbSNicholas Bellinger const char *name) 2401c66ac9dbSNicholas Bellinger { 2402c66ac9dbSNicholas Bellinger struct t10_alua *alua = container_of(group, struct t10_alua, 2403c66ac9dbSNicholas Bellinger alua_tg_pt_gps_group); 2404c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2405c66ac9dbSNicholas Bellinger struct config_group *alua_tg_pt_gp_cg = NULL; 2406c66ac9dbSNicholas Bellinger struct config_item *alua_tg_pt_gp_ci = NULL; 2407c66ac9dbSNicholas Bellinger 24080fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); 24096708bb27SAndy Grover if (!tg_pt_gp) 2410c66ac9dbSNicholas Bellinger return NULL; 2411c66ac9dbSNicholas Bellinger 2412c66ac9dbSNicholas Bellinger alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; 2413c66ac9dbSNicholas Bellinger alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; 2414c66ac9dbSNicholas Bellinger 2415c66ac9dbSNicholas Bellinger config_group_init_type_name(alua_tg_pt_gp_cg, name, 2416c66ac9dbSNicholas Bellinger &target_core_alua_tg_pt_gp_cit); 2417c66ac9dbSNicholas Bellinger 24186708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" 2419c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s\n", 2420c66ac9dbSNicholas Bellinger config_item_name(alua_tg_pt_gp_ci)); 2421c66ac9dbSNicholas Bellinger 2422c66ac9dbSNicholas Bellinger return alua_tg_pt_gp_cg; 2423c66ac9dbSNicholas Bellinger } 2424c66ac9dbSNicholas Bellinger 2425c66ac9dbSNicholas Bellinger static void target_core_alua_drop_tg_pt_gp( 2426c66ac9dbSNicholas Bellinger struct config_group *group, 2427c66ac9dbSNicholas Bellinger struct config_item *item) 2428c66ac9dbSNicholas Bellinger { 2429c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), 2430c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp, tg_pt_gp_group); 2431c66ac9dbSNicholas Bellinger 24326708bb27SAndy Grover pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" 2433c66ac9dbSNicholas Bellinger " Group: alua/tg_pt_gps/%s, ID: %hu\n", 2434c66ac9dbSNicholas Bellinger config_item_name(item), tg_pt_gp->tg_pt_gp_id); 24351f6fe7cbSNicholas Bellinger /* 24361f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() 24371f6fe7cbSNicholas Bellinger * -> target_core_alua_tg_pt_gp_release(). 24381f6fe7cbSNicholas Bellinger */ 2439c66ac9dbSNicholas Bellinger config_item_put(item); 2440c66ac9dbSNicholas Bellinger } 2441c66ac9dbSNicholas Bellinger 2442c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { 2443c66ac9dbSNicholas Bellinger .make_group = &target_core_alua_create_tg_pt_gp, 2444c66ac9dbSNicholas Bellinger .drop_item = &target_core_alua_drop_tg_pt_gp, 2445c66ac9dbSNicholas Bellinger }; 2446c66ac9dbSNicholas Bellinger 244772aca57bSNicholas Bellinger TB_CIT_SETUP(dev_alua_tg_pt_gps, NULL, &target_core_alua_tg_pt_gps_group_ops, NULL); 2448c66ac9dbSNicholas Bellinger 244972aca57bSNicholas Bellinger /* End functions for struct config_item_type tb_alua_tg_pt_gps_cit */ 2450c66ac9dbSNicholas Bellinger 2451c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_alua_cit */ 2452c66ac9dbSNicholas Bellinger 2453c66ac9dbSNicholas Bellinger /* 2454c66ac9dbSNicholas Bellinger * target_core_alua_cit is a ConfigFS group that lives under 2455c66ac9dbSNicholas Bellinger * /sys/kernel/config/target/core/alua. There are default groups 2456c66ac9dbSNicholas Bellinger * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to 2457c66ac9dbSNicholas Bellinger * target_core_alua_cit in target_core_init_configfs() below. 2458c66ac9dbSNicholas Bellinger */ 2459c66ac9dbSNicholas Bellinger static struct config_item_type target_core_alua_cit = { 2460c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2461c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2462c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2463c66ac9dbSNicholas Bellinger }; 2464c66ac9dbSNicholas Bellinger 2465c66ac9dbSNicholas Bellinger /* End functions for struct config_item_type target_core_alua_cit */ 2466c66ac9dbSNicholas Bellinger 2467d23ab570SNicholas Bellinger /* Start functions for struct config_item_type tb_dev_stat_cit */ 246812d23384SNicholas Bellinger 246912d23384SNicholas Bellinger static struct config_group *target_core_stat_mkdir( 247012d23384SNicholas Bellinger struct config_group *group, 247112d23384SNicholas Bellinger const char *name) 247212d23384SNicholas Bellinger { 247312d23384SNicholas Bellinger return ERR_PTR(-ENOSYS); 247412d23384SNicholas Bellinger } 247512d23384SNicholas Bellinger 247612d23384SNicholas Bellinger static void target_core_stat_rmdir( 247712d23384SNicholas Bellinger struct config_group *group, 247812d23384SNicholas Bellinger struct config_item *item) 247912d23384SNicholas Bellinger { 248012d23384SNicholas Bellinger return; 248112d23384SNicholas Bellinger } 248212d23384SNicholas Bellinger 248312d23384SNicholas Bellinger static struct configfs_group_operations target_core_stat_group_ops = { 248412d23384SNicholas Bellinger .make_group = &target_core_stat_mkdir, 248512d23384SNicholas Bellinger .drop_item = &target_core_stat_rmdir, 248612d23384SNicholas Bellinger }; 248712d23384SNicholas Bellinger 2488d23ab570SNicholas Bellinger TB_CIT_SETUP(dev_stat, NULL, &target_core_stat_group_ops, NULL); 248912d23384SNicholas Bellinger 2490d23ab570SNicholas Bellinger /* End functions for struct config_item_type tb_dev_stat_cit */ 249112d23384SNicholas Bellinger 2492c66ac9dbSNicholas Bellinger /* Start functions for struct config_item_type target_core_hba_cit */ 2493c66ac9dbSNicholas Bellinger 2494c66ac9dbSNicholas Bellinger static struct config_group *target_core_make_subdev( 2495c66ac9dbSNicholas Bellinger struct config_group *group, 2496c66ac9dbSNicholas Bellinger const char *name) 2497c66ac9dbSNicholas Bellinger { 2498c66ac9dbSNicholas Bellinger struct t10_alua_tg_pt_gp *tg_pt_gp; 2499c66ac9dbSNicholas Bellinger struct se_subsystem_api *t; 2500c66ac9dbSNicholas Bellinger struct config_item *hba_ci = &group->cg_item; 2501c66ac9dbSNicholas Bellinger struct se_hba *hba = item_to_hba(hba_ci); 25020fd97ccfSChristoph Hellwig struct se_device *dev; 2503c66ac9dbSNicholas Bellinger struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; 250412d23384SNicholas Bellinger struct config_group *dev_stat_grp = NULL; 250512d23384SNicholas Bellinger int errno = -ENOMEM, ret; 2506c66ac9dbSNicholas Bellinger 250712d23384SNicholas Bellinger ret = mutex_lock_interruptible(&hba->hba_access_mutex); 250812d23384SNicholas Bellinger if (ret) 250912d23384SNicholas Bellinger return ERR_PTR(ret); 2510c66ac9dbSNicholas Bellinger /* 2511c66ac9dbSNicholas Bellinger * Locate the struct se_subsystem_api from parent's struct se_hba. 2512c66ac9dbSNicholas Bellinger */ 2513c66ac9dbSNicholas Bellinger t = hba->transport; 2514c66ac9dbSNicholas Bellinger 25150fd97ccfSChristoph Hellwig dev = target_alloc_device(hba, name); 25160fd97ccfSChristoph Hellwig if (!dev) 25170fd97ccfSChristoph Hellwig goto out_unlock; 2518c66ac9dbSNicholas Bellinger 25190fd97ccfSChristoph Hellwig dev_cg = &dev->dev_group; 2520c66ac9dbSNicholas Bellinger 252113f6a914SSebastian Andrzej Siewior dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, 2522c66ac9dbSNicholas Bellinger GFP_KERNEL); 25236708bb27SAndy Grover if (!dev_cg->default_groups) 25240fd97ccfSChristoph Hellwig goto out_free_device; 2525c66ac9dbSNicholas Bellinger 252673112edcSNicholas Bellinger config_group_init_type_name(dev_cg, name, &t->tb_cits.tb_dev_cit); 25270fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", 2528f79a897eSNicholas Bellinger &t->tb_cits.tb_dev_attrib_cit); 25290fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_pr_group, "pr", 253091e2e39bSNicholas Bellinger &t->tb_cits.tb_dev_pr_cit); 25310fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", 2532f8d389c6SNicholas Bellinger &t->tb_cits.tb_dev_wwn_cit); 25330fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, 253472aca57bSNicholas Bellinger "alua", &t->tb_cits.tb_dev_alua_tg_pt_gps_cit); 25350fd97ccfSChristoph Hellwig config_group_init_type_name(&dev->dev_stat_grps.stat_group, 2536d23ab570SNicholas Bellinger "statistics", &t->tb_cits.tb_dev_stat_cit); 253712d23384SNicholas Bellinger 25380fd97ccfSChristoph Hellwig dev_cg->default_groups[0] = &dev->dev_attrib.da_group; 25390fd97ccfSChristoph Hellwig dev_cg->default_groups[1] = &dev->dev_pr_group; 25400fd97ccfSChristoph Hellwig dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; 25410fd97ccfSChristoph Hellwig dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; 25420fd97ccfSChristoph Hellwig dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; 254312d23384SNicholas Bellinger dev_cg->default_groups[5] = NULL; 2544c66ac9dbSNicholas Bellinger /* 254512d23384SNicholas Bellinger * Add core/$HBA/$DEV/alua/default_tg_pt_gp 2546c66ac9dbSNicholas Bellinger */ 25470fd97ccfSChristoph Hellwig tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); 25486708bb27SAndy Grover if (!tg_pt_gp) 25490fd97ccfSChristoph Hellwig goto out_free_dev_cg_default_groups; 25500fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = tg_pt_gp; 2551c66ac9dbSNicholas Bellinger 25520fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 255313f6a914SSebastian Andrzej Siewior tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2554c66ac9dbSNicholas Bellinger GFP_KERNEL); 25556708bb27SAndy Grover if (!tg_pt_gp_cg->default_groups) { 25566708bb27SAndy Grover pr_err("Unable to allocate tg_pt_gp_cg->" 2557c66ac9dbSNicholas Bellinger "default_groups\n"); 25580fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp; 2559c66ac9dbSNicholas Bellinger } 2560c66ac9dbSNicholas Bellinger 2561c66ac9dbSNicholas Bellinger config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, 2562c66ac9dbSNicholas Bellinger "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); 2563c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; 2564c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[1] = NULL; 256512d23384SNicholas Bellinger /* 256612d23384SNicholas Bellinger * Add core/$HBA/$DEV/statistics/ default groups 256712d23384SNicholas Bellinger */ 25680fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 256913f6a914SSebastian Andrzej Siewior dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, 257012d23384SNicholas Bellinger GFP_KERNEL); 257112d23384SNicholas Bellinger if (!dev_stat_grp->default_groups) { 25726708bb27SAndy Grover pr_err("Unable to allocate dev_stat_grp->default_groups\n"); 25730fd97ccfSChristoph Hellwig goto out_free_tg_pt_gp_cg_default_groups; 257412d23384SNicholas Bellinger } 25750fd97ccfSChristoph Hellwig target_stat_setup_dev_default_groups(dev); 2576c66ac9dbSNicholas Bellinger 2577c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 25780fd97ccfSChristoph Hellwig return dev_cg; 25790fd97ccfSChristoph Hellwig 25800fd97ccfSChristoph Hellwig out_free_tg_pt_gp_cg_default_groups: 2581c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 25820fd97ccfSChristoph Hellwig out_free_tg_pt_gp: 25830fd97ccfSChristoph Hellwig core_alua_free_tg_pt_gp(tg_pt_gp); 25840fd97ccfSChristoph Hellwig out_free_dev_cg_default_groups: 2585c66ac9dbSNicholas Bellinger kfree(dev_cg->default_groups); 25860fd97ccfSChristoph Hellwig out_free_device: 25870fd97ccfSChristoph Hellwig target_free_device(dev); 25880fd97ccfSChristoph Hellwig out_unlock: 2589c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 259012d23384SNicholas Bellinger return ERR_PTR(errno); 2591c66ac9dbSNicholas Bellinger } 2592c66ac9dbSNicholas Bellinger 2593c66ac9dbSNicholas Bellinger static void target_core_drop_subdev( 2594c66ac9dbSNicholas Bellinger struct config_group *group, 2595c66ac9dbSNicholas Bellinger struct config_item *item) 2596c66ac9dbSNicholas Bellinger { 25970fd97ccfSChristoph Hellwig struct config_group *dev_cg = to_config_group(item); 25980fd97ccfSChristoph Hellwig struct se_device *dev = 25990fd97ccfSChristoph Hellwig container_of(dev_cg, struct se_device, dev_group); 2600c66ac9dbSNicholas Bellinger struct se_hba *hba; 2601c66ac9dbSNicholas Bellinger struct config_item *df_item; 26020fd97ccfSChristoph Hellwig struct config_group *tg_pt_gp_cg, *dev_stat_grp; 26031f6fe7cbSNicholas Bellinger int i; 2604c66ac9dbSNicholas Bellinger 26050fd97ccfSChristoph Hellwig hba = item_to_hba(&dev->se_hba->hba_group.cg_item); 2606c66ac9dbSNicholas Bellinger 26071f6fe7cbSNicholas Bellinger mutex_lock(&hba->hba_access_mutex); 2608c66ac9dbSNicholas Bellinger 26090fd97ccfSChristoph Hellwig dev_stat_grp = &dev->dev_stat_grps.stat_group; 261012d23384SNicholas Bellinger for (i = 0; dev_stat_grp->default_groups[i]; i++) { 261112d23384SNicholas Bellinger df_item = &dev_stat_grp->default_groups[i]->cg_item; 261212d23384SNicholas Bellinger dev_stat_grp->default_groups[i] = NULL; 261312d23384SNicholas Bellinger config_item_put(df_item); 261412d23384SNicholas Bellinger } 261512d23384SNicholas Bellinger kfree(dev_stat_grp->default_groups); 261612d23384SNicholas Bellinger 26170fd97ccfSChristoph Hellwig tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; 2618c66ac9dbSNicholas Bellinger for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { 2619c66ac9dbSNicholas Bellinger df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; 2620c66ac9dbSNicholas Bellinger tg_pt_gp_cg->default_groups[i] = NULL; 2621c66ac9dbSNicholas Bellinger config_item_put(df_item); 2622c66ac9dbSNicholas Bellinger } 2623c66ac9dbSNicholas Bellinger kfree(tg_pt_gp_cg->default_groups); 26241f6fe7cbSNicholas Bellinger /* 26251f6fe7cbSNicholas Bellinger * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp 26261f6fe7cbSNicholas Bellinger * directly from target_core_alua_tg_pt_gp_release(). 26271f6fe7cbSNicholas Bellinger */ 26280fd97ccfSChristoph Hellwig dev->t10_alua.default_tg_pt_gp = NULL; 2629c66ac9dbSNicholas Bellinger 2630c66ac9dbSNicholas Bellinger for (i = 0; dev_cg->default_groups[i]; i++) { 2631c66ac9dbSNicholas Bellinger df_item = &dev_cg->default_groups[i]->cg_item; 2632c66ac9dbSNicholas Bellinger dev_cg->default_groups[i] = NULL; 2633c66ac9dbSNicholas Bellinger config_item_put(df_item); 2634c66ac9dbSNicholas Bellinger } 26351f6fe7cbSNicholas Bellinger /* 26360fd97ccfSChristoph Hellwig * se_dev is released from target_core_dev_item_ops->release() 26371f6fe7cbSNicholas Bellinger */ 2638c66ac9dbSNicholas Bellinger config_item_put(item); 2639c66ac9dbSNicholas Bellinger mutex_unlock(&hba->hba_access_mutex); 2640c66ac9dbSNicholas Bellinger } 2641c66ac9dbSNicholas Bellinger 2642c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_hba_group_ops = { 2643c66ac9dbSNicholas Bellinger .make_group = target_core_make_subdev, 2644c66ac9dbSNicholas Bellinger .drop_item = target_core_drop_subdev, 2645c66ac9dbSNicholas Bellinger }; 2646c66ac9dbSNicholas Bellinger 2647c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); 2648c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR(_name, _mode) \ 2649c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2650c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2651c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR(_name, _mode, \ 2652c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name, \ 2653c66ac9dbSNicholas Bellinger target_core_hba_store_attr_##_name); 2654c66ac9dbSNicholas Bellinger 2655c66ac9dbSNicholas Bellinger #define SE_HBA_ATTR_RO(_name) \ 2656c66ac9dbSNicholas Bellinger static struct target_core_hba_attribute \ 2657c66ac9dbSNicholas Bellinger target_core_hba_##_name = \ 2658c66ac9dbSNicholas Bellinger __CONFIGFS_EATTR_RO(_name, \ 2659c66ac9dbSNicholas Bellinger target_core_hba_show_attr_##_name); 2660c66ac9dbSNicholas Bellinger 2661c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_info( 2662c66ac9dbSNicholas Bellinger struct se_hba *hba, 2663c66ac9dbSNicholas Bellinger char *page) 2664c66ac9dbSNicholas Bellinger { 2665c66ac9dbSNicholas Bellinger return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", 2666c66ac9dbSNicholas Bellinger hba->hba_id, hba->transport->name, 2667c66ac9dbSNicholas Bellinger TARGET_CORE_CONFIGFS_VERSION); 2668c66ac9dbSNicholas Bellinger } 2669c66ac9dbSNicholas Bellinger 2670c66ac9dbSNicholas Bellinger SE_HBA_ATTR_RO(hba_info); 2671c66ac9dbSNicholas Bellinger 2672c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, 2673c66ac9dbSNicholas Bellinger char *page) 2674c66ac9dbSNicholas Bellinger { 2675c66ac9dbSNicholas Bellinger int hba_mode = 0; 2676c66ac9dbSNicholas Bellinger 2677c66ac9dbSNicholas Bellinger if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) 2678c66ac9dbSNicholas Bellinger hba_mode = 1; 2679c66ac9dbSNicholas Bellinger 2680c66ac9dbSNicholas Bellinger return sprintf(page, "%d\n", hba_mode); 2681c66ac9dbSNicholas Bellinger } 2682c66ac9dbSNicholas Bellinger 2683c66ac9dbSNicholas Bellinger static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, 2684c66ac9dbSNicholas Bellinger const char *page, size_t count) 2685c66ac9dbSNicholas Bellinger { 2686c66ac9dbSNicholas Bellinger struct se_subsystem_api *transport = hba->transport; 2687c66ac9dbSNicholas Bellinger unsigned long mode_flag; 2688c66ac9dbSNicholas Bellinger int ret; 2689c66ac9dbSNicholas Bellinger 2690c66ac9dbSNicholas Bellinger if (transport->pmode_enable_hba == NULL) 2691c66ac9dbSNicholas Bellinger return -EINVAL; 2692c66ac9dbSNicholas Bellinger 269357103d7fSJingoo Han ret = kstrtoul(page, 0, &mode_flag); 2694c66ac9dbSNicholas Bellinger if (ret < 0) { 26956708bb27SAndy Grover pr_err("Unable to extract hba mode flag: %d\n", ret); 269657103d7fSJingoo Han return ret; 2697c66ac9dbSNicholas Bellinger } 2698c66ac9dbSNicholas Bellinger 26990fd97ccfSChristoph Hellwig if (hba->dev_count) { 27006708bb27SAndy Grover pr_err("Unable to set hba_mode with active devices\n"); 2701c66ac9dbSNicholas Bellinger return -EINVAL; 2702c66ac9dbSNicholas Bellinger } 2703c66ac9dbSNicholas Bellinger 2704c66ac9dbSNicholas Bellinger ret = transport->pmode_enable_hba(hba, mode_flag); 2705c66ac9dbSNicholas Bellinger if (ret < 0) 2706c66ac9dbSNicholas Bellinger return -EINVAL; 2707c66ac9dbSNicholas Bellinger if (ret > 0) 2708c66ac9dbSNicholas Bellinger hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; 2709c66ac9dbSNicholas Bellinger else if (ret == 0) 2710c66ac9dbSNicholas Bellinger hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; 2711c66ac9dbSNicholas Bellinger 2712c66ac9dbSNicholas Bellinger return count; 2713c66ac9dbSNicholas Bellinger } 2714c66ac9dbSNicholas Bellinger 2715c66ac9dbSNicholas Bellinger SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); 2716c66ac9dbSNicholas Bellinger 2717c66ac9dbSNicholas Bellinger CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); 2718c66ac9dbSNicholas Bellinger 27191f6fe7cbSNicholas Bellinger static void target_core_hba_release(struct config_item *item) 27201f6fe7cbSNicholas Bellinger { 27211f6fe7cbSNicholas Bellinger struct se_hba *hba = container_of(to_config_group(item), 27221f6fe7cbSNicholas Bellinger struct se_hba, hba_group); 27231f6fe7cbSNicholas Bellinger core_delete_hba(hba); 27241f6fe7cbSNicholas Bellinger } 27251f6fe7cbSNicholas Bellinger 2726c66ac9dbSNicholas Bellinger static struct configfs_attribute *target_core_hba_attrs[] = { 2727c66ac9dbSNicholas Bellinger &target_core_hba_hba_info.attr, 2728c66ac9dbSNicholas Bellinger &target_core_hba_hba_mode.attr, 2729c66ac9dbSNicholas Bellinger NULL, 2730c66ac9dbSNicholas Bellinger }; 2731c66ac9dbSNicholas Bellinger 2732c66ac9dbSNicholas Bellinger static struct configfs_item_operations target_core_hba_item_ops = { 27331f6fe7cbSNicholas Bellinger .release = target_core_hba_release, 2734c66ac9dbSNicholas Bellinger .show_attribute = target_core_hba_attr_show, 2735c66ac9dbSNicholas Bellinger .store_attribute = target_core_hba_attr_store, 2736c66ac9dbSNicholas Bellinger }; 2737c66ac9dbSNicholas Bellinger 2738c66ac9dbSNicholas Bellinger static struct config_item_type target_core_hba_cit = { 2739c66ac9dbSNicholas Bellinger .ct_item_ops = &target_core_hba_item_ops, 2740c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_hba_group_ops, 2741c66ac9dbSNicholas Bellinger .ct_attrs = target_core_hba_attrs, 2742c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2743c66ac9dbSNicholas Bellinger }; 2744c66ac9dbSNicholas Bellinger 2745c66ac9dbSNicholas Bellinger static struct config_group *target_core_call_addhbatotarget( 2746c66ac9dbSNicholas Bellinger struct config_group *group, 2747c66ac9dbSNicholas Bellinger const char *name) 2748c66ac9dbSNicholas Bellinger { 2749c66ac9dbSNicholas Bellinger char *se_plugin_str, *str, *str2; 2750c66ac9dbSNicholas Bellinger struct se_hba *hba; 2751c66ac9dbSNicholas Bellinger char buf[TARGET_CORE_NAME_MAX_LEN]; 2752c66ac9dbSNicholas Bellinger unsigned long plugin_dep_id = 0; 2753c66ac9dbSNicholas Bellinger int ret; 2754c66ac9dbSNicholas Bellinger 2755c66ac9dbSNicholas Bellinger memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); 275660d645a4SDan Carpenter if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { 27576708bb27SAndy Grover pr_err("Passed *name strlen(): %d exceeds" 2758c66ac9dbSNicholas Bellinger " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), 2759c66ac9dbSNicholas Bellinger TARGET_CORE_NAME_MAX_LEN); 2760c66ac9dbSNicholas Bellinger return ERR_PTR(-ENAMETOOLONG); 2761c66ac9dbSNicholas Bellinger } 2762c66ac9dbSNicholas Bellinger snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); 2763c66ac9dbSNicholas Bellinger 2764c66ac9dbSNicholas Bellinger str = strstr(buf, "_"); 27656708bb27SAndy Grover if (!str) { 27666708bb27SAndy Grover pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); 2767c66ac9dbSNicholas Bellinger return ERR_PTR(-EINVAL); 2768c66ac9dbSNicholas Bellinger } 2769c66ac9dbSNicholas Bellinger se_plugin_str = buf; 2770c66ac9dbSNicholas Bellinger /* 2771c66ac9dbSNicholas Bellinger * Special case for subsystem plugins that have "_" in their names. 2772c66ac9dbSNicholas Bellinger * Namely rd_direct and rd_mcp.. 2773c66ac9dbSNicholas Bellinger */ 2774c66ac9dbSNicholas Bellinger str2 = strstr(str+1, "_"); 27756708bb27SAndy Grover if (str2) { 2776c66ac9dbSNicholas Bellinger *str2 = '\0'; /* Terminate for *se_plugin_str */ 2777c66ac9dbSNicholas Bellinger str2++; /* Skip to start of plugin dependent ID */ 2778c66ac9dbSNicholas Bellinger str = str2; 2779c66ac9dbSNicholas Bellinger } else { 2780c66ac9dbSNicholas Bellinger *str = '\0'; /* Terminate for *se_plugin_str */ 2781c66ac9dbSNicholas Bellinger str++; /* Skip to start of plugin dependent ID */ 2782c66ac9dbSNicholas Bellinger } 2783c66ac9dbSNicholas Bellinger 278457103d7fSJingoo Han ret = kstrtoul(str, 0, &plugin_dep_id); 2785c66ac9dbSNicholas Bellinger if (ret < 0) { 278657103d7fSJingoo Han pr_err("kstrtoul() returned %d for" 2787c66ac9dbSNicholas Bellinger " plugin_dep_id\n", ret); 278857103d7fSJingoo Han return ERR_PTR(ret); 2789c66ac9dbSNicholas Bellinger } 2790c66ac9dbSNicholas Bellinger /* 2791c66ac9dbSNicholas Bellinger * Load up TCM subsystem plugins if they have not already been loaded. 2792c66ac9dbSNicholas Bellinger */ 2793dbc5623eSNicholas Bellinger transport_subsystem_check_init(); 2794c66ac9dbSNicholas Bellinger 2795c66ac9dbSNicholas Bellinger hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); 2796c66ac9dbSNicholas Bellinger if (IS_ERR(hba)) 2797c66ac9dbSNicholas Bellinger return ERR_CAST(hba); 2798c66ac9dbSNicholas Bellinger 2799c66ac9dbSNicholas Bellinger config_group_init_type_name(&hba->hba_group, name, 2800c66ac9dbSNicholas Bellinger &target_core_hba_cit); 2801c66ac9dbSNicholas Bellinger 2802c66ac9dbSNicholas Bellinger return &hba->hba_group; 2803c66ac9dbSNicholas Bellinger } 2804c66ac9dbSNicholas Bellinger 2805c66ac9dbSNicholas Bellinger static void target_core_call_delhbafromtarget( 2806c66ac9dbSNicholas Bellinger struct config_group *group, 2807c66ac9dbSNicholas Bellinger struct config_item *item) 2808c66ac9dbSNicholas Bellinger { 28091f6fe7cbSNicholas Bellinger /* 28101f6fe7cbSNicholas Bellinger * core_delete_hba() is called from target_core_hba_item_ops->release() 28111f6fe7cbSNicholas Bellinger * -> target_core_hba_release() 28121f6fe7cbSNicholas Bellinger */ 2813c66ac9dbSNicholas Bellinger config_item_put(item); 2814c66ac9dbSNicholas Bellinger } 2815c66ac9dbSNicholas Bellinger 2816c66ac9dbSNicholas Bellinger static struct configfs_group_operations target_core_group_ops = { 2817c66ac9dbSNicholas Bellinger .make_group = target_core_call_addhbatotarget, 2818c66ac9dbSNicholas Bellinger .drop_item = target_core_call_delhbafromtarget, 2819c66ac9dbSNicholas Bellinger }; 2820c66ac9dbSNicholas Bellinger 2821c66ac9dbSNicholas Bellinger static struct config_item_type target_core_cit = { 2822c66ac9dbSNicholas Bellinger .ct_item_ops = NULL, 2823c66ac9dbSNicholas Bellinger .ct_group_ops = &target_core_group_ops, 2824c66ac9dbSNicholas Bellinger .ct_attrs = NULL, 2825c66ac9dbSNicholas Bellinger .ct_owner = THIS_MODULE, 2826c66ac9dbSNicholas Bellinger }; 2827c66ac9dbSNicholas Bellinger 2828c66ac9dbSNicholas Bellinger /* Stop functions for struct config_item_type target_core_hba_cit */ 2829c66ac9dbSNicholas Bellinger 283073112edcSNicholas Bellinger void target_core_setup_sub_cits(struct se_subsystem_api *sa) 283173112edcSNicholas Bellinger { 283273112edcSNicholas Bellinger target_core_setup_dev_cit(sa); 2833f79a897eSNicholas Bellinger target_core_setup_dev_attrib_cit(sa); 283491e2e39bSNicholas Bellinger target_core_setup_dev_pr_cit(sa); 2835f8d389c6SNicholas Bellinger target_core_setup_dev_wwn_cit(sa); 283672aca57bSNicholas Bellinger target_core_setup_dev_alua_tg_pt_gps_cit(sa); 2837d23ab570SNicholas Bellinger target_core_setup_dev_stat_cit(sa); 283873112edcSNicholas Bellinger } 283973112edcSNicholas Bellinger EXPORT_SYMBOL(target_core_setup_sub_cits); 284073112edcSNicholas Bellinger 284154550fabSAxel Lin static int __init target_core_init_configfs(void) 2842c66ac9dbSNicholas Bellinger { 2843c66ac9dbSNicholas Bellinger struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; 2844c66ac9dbSNicholas Bellinger struct config_group *lu_gp_cg = NULL; 2845d588cf8fSChristoph Hellwig struct configfs_subsystem *subsys = &target_core_fabrics; 2846c66ac9dbSNicholas Bellinger struct t10_alua_lu_gp *lu_gp; 2847c66ac9dbSNicholas Bellinger int ret; 2848c66ac9dbSNicholas Bellinger 28496708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" 2850c66ac9dbSNicholas Bellinger " Engine: %s on %s/%s on "UTS_RELEASE"\n", 2851c66ac9dbSNicholas Bellinger TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); 2852c66ac9dbSNicholas Bellinger 2853c66ac9dbSNicholas Bellinger config_group_init(&subsys->su_group); 2854c66ac9dbSNicholas Bellinger mutex_init(&subsys->su_mutex); 2855c66ac9dbSNicholas Bellinger 2856e3d6f909SAndy Grover ret = init_se_kmem_caches(); 2857c66ac9dbSNicholas Bellinger if (ret < 0) 2858e3d6f909SAndy Grover return ret; 2859c66ac9dbSNicholas Bellinger /* 2860c66ac9dbSNicholas Bellinger * Create $CONFIGFS/target/core default group for HBA <-> Storage Object 2861c66ac9dbSNicholas Bellinger * and ALUA Logical Unit Group and Target Port Group infrastructure. 2862c66ac9dbSNicholas Bellinger */ 2863c66ac9dbSNicholas Bellinger target_cg = &subsys->su_group; 2864ab6dae82SAndy Grover target_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2865c66ac9dbSNicholas Bellinger GFP_KERNEL); 28666708bb27SAndy Grover if (!target_cg->default_groups) { 28676708bb27SAndy Grover pr_err("Unable to allocate target_cg->default_groups\n"); 286837bb7899SPeter Senna Tschudin ret = -ENOMEM; 2869c66ac9dbSNicholas Bellinger goto out_global; 2870c66ac9dbSNicholas Bellinger } 2871c66ac9dbSNicholas Bellinger 2872e3d6f909SAndy Grover config_group_init_type_name(&target_core_hbagroup, 2873c66ac9dbSNicholas Bellinger "core", &target_core_cit); 2874e3d6f909SAndy Grover target_cg->default_groups[0] = &target_core_hbagroup; 2875c66ac9dbSNicholas Bellinger target_cg->default_groups[1] = NULL; 2876c66ac9dbSNicholas Bellinger /* 2877c66ac9dbSNicholas Bellinger * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ 2878c66ac9dbSNicholas Bellinger */ 2879e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 288013f6a914SSebastian Andrzej Siewior hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2881c66ac9dbSNicholas Bellinger GFP_KERNEL); 28826708bb27SAndy Grover if (!hba_cg->default_groups) { 28836708bb27SAndy Grover pr_err("Unable to allocate hba_cg->default_groups\n"); 288437bb7899SPeter Senna Tschudin ret = -ENOMEM; 2885c66ac9dbSNicholas Bellinger goto out_global; 2886c66ac9dbSNicholas Bellinger } 2887e3d6f909SAndy Grover config_group_init_type_name(&alua_group, 2888c66ac9dbSNicholas Bellinger "alua", &target_core_alua_cit); 2889e3d6f909SAndy Grover hba_cg->default_groups[0] = &alua_group; 2890c66ac9dbSNicholas Bellinger hba_cg->default_groups[1] = NULL; 2891c66ac9dbSNicholas Bellinger /* 2892c66ac9dbSNicholas Bellinger * Add ALUA Logical Unit Group and Target Port Group ConfigFS 2893c66ac9dbSNicholas Bellinger * groups under /sys/kernel/config/target/core/alua/ 2894c66ac9dbSNicholas Bellinger */ 2895e3d6f909SAndy Grover alua_cg = &alua_group; 289613f6a914SSebastian Andrzej Siewior alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2897c66ac9dbSNicholas Bellinger GFP_KERNEL); 28986708bb27SAndy Grover if (!alua_cg->default_groups) { 28996708bb27SAndy Grover pr_err("Unable to allocate alua_cg->default_groups\n"); 290037bb7899SPeter Senna Tschudin ret = -ENOMEM; 2901c66ac9dbSNicholas Bellinger goto out_global; 2902c66ac9dbSNicholas Bellinger } 2903c66ac9dbSNicholas Bellinger 2904e3d6f909SAndy Grover config_group_init_type_name(&alua_lu_gps_group, 2905c66ac9dbSNicholas Bellinger "lu_gps", &target_core_alua_lu_gps_cit); 2906e3d6f909SAndy Grover alua_cg->default_groups[0] = &alua_lu_gps_group; 2907c66ac9dbSNicholas Bellinger alua_cg->default_groups[1] = NULL; 2908c66ac9dbSNicholas Bellinger /* 2909c66ac9dbSNicholas Bellinger * Add core/alua/lu_gps/default_lu_gp 2910c66ac9dbSNicholas Bellinger */ 2911c66ac9dbSNicholas Bellinger lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); 291237bb7899SPeter Senna Tschudin if (IS_ERR(lu_gp)) { 291337bb7899SPeter Senna Tschudin ret = -ENOMEM; 2914c66ac9dbSNicholas Bellinger goto out_global; 291537bb7899SPeter Senna Tschudin } 2916c66ac9dbSNicholas Bellinger 2917e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 291813f6a914SSebastian Andrzej Siewior lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, 2919c66ac9dbSNicholas Bellinger GFP_KERNEL); 29206708bb27SAndy Grover if (!lu_gp_cg->default_groups) { 29216708bb27SAndy Grover pr_err("Unable to allocate lu_gp_cg->default_groups\n"); 292237bb7899SPeter Senna Tschudin ret = -ENOMEM; 2923c66ac9dbSNicholas Bellinger goto out_global; 2924c66ac9dbSNicholas Bellinger } 2925c66ac9dbSNicholas Bellinger 2926c66ac9dbSNicholas Bellinger config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", 2927c66ac9dbSNicholas Bellinger &target_core_alua_lu_gp_cit); 2928c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; 2929c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[1] = NULL; 2930e3d6f909SAndy Grover default_lu_gp = lu_gp; 2931c66ac9dbSNicholas Bellinger /* 2932c66ac9dbSNicholas Bellinger * Register the target_core_mod subsystem with configfs. 2933c66ac9dbSNicholas Bellinger */ 2934c66ac9dbSNicholas Bellinger ret = configfs_register_subsystem(subsys); 2935c66ac9dbSNicholas Bellinger if (ret < 0) { 29366708bb27SAndy Grover pr_err("Error %d while registering subsystem %s\n", 2937c66ac9dbSNicholas Bellinger ret, subsys->su_group.cg_item.ci_namebuf); 2938c66ac9dbSNicholas Bellinger goto out_global; 2939c66ac9dbSNicholas Bellinger } 29406708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" 2941c66ac9dbSNicholas Bellinger " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" 2942c66ac9dbSNicholas Bellinger " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); 2943c66ac9dbSNicholas Bellinger /* 2944c66ac9dbSNicholas Bellinger * Register built-in RAMDISK subsystem logic for virtual LUN 0 2945c66ac9dbSNicholas Bellinger */ 2946c66ac9dbSNicholas Bellinger ret = rd_module_init(); 2947c66ac9dbSNicholas Bellinger if (ret < 0) 2948c66ac9dbSNicholas Bellinger goto out; 2949c66ac9dbSNicholas Bellinger 29500d0f9dfbSRoland Dreier ret = core_dev_setup_virtual_lun0(); 29510d0f9dfbSRoland Dreier if (ret < 0) 2952c66ac9dbSNicholas Bellinger goto out; 2953c66ac9dbSNicholas Bellinger 2954f99715acSNicholas Bellinger ret = target_xcopy_setup_pt(); 2955f99715acSNicholas Bellinger if (ret < 0) 2956f99715acSNicholas Bellinger goto out; 2957f99715acSNicholas Bellinger 2958c66ac9dbSNicholas Bellinger return 0; 2959c66ac9dbSNicholas Bellinger 2960c66ac9dbSNicholas Bellinger out: 2961c66ac9dbSNicholas Bellinger configfs_unregister_subsystem(subsys); 2962c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 2963c66ac9dbSNicholas Bellinger rd_module_exit(); 2964c66ac9dbSNicholas Bellinger out_global: 2965e3d6f909SAndy Grover if (default_lu_gp) { 2966e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 2967e3d6f909SAndy Grover default_lu_gp = NULL; 2968c66ac9dbSNicholas Bellinger } 2969c66ac9dbSNicholas Bellinger if (lu_gp_cg) 2970c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 2971c66ac9dbSNicholas Bellinger if (alua_cg) 2972c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 2973c66ac9dbSNicholas Bellinger if (hba_cg) 2974c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 2975c66ac9dbSNicholas Bellinger kfree(target_cg->default_groups); 2976e3d6f909SAndy Grover release_se_kmem_caches(); 2977e3d6f909SAndy Grover return ret; 2978c66ac9dbSNicholas Bellinger } 2979c66ac9dbSNicholas Bellinger 298054550fabSAxel Lin static void __exit target_core_exit_configfs(void) 2981c66ac9dbSNicholas Bellinger { 2982c66ac9dbSNicholas Bellinger struct config_group *hba_cg, *alua_cg, *lu_gp_cg; 2983c66ac9dbSNicholas Bellinger struct config_item *item; 2984c66ac9dbSNicholas Bellinger int i; 2985c66ac9dbSNicholas Bellinger 2986e3d6f909SAndy Grover lu_gp_cg = &alua_lu_gps_group; 2987c66ac9dbSNicholas Bellinger for (i = 0; lu_gp_cg->default_groups[i]; i++) { 2988c66ac9dbSNicholas Bellinger item = &lu_gp_cg->default_groups[i]->cg_item; 2989c66ac9dbSNicholas Bellinger lu_gp_cg->default_groups[i] = NULL; 2990c66ac9dbSNicholas Bellinger config_item_put(item); 2991c66ac9dbSNicholas Bellinger } 2992c66ac9dbSNicholas Bellinger kfree(lu_gp_cg->default_groups); 29937c2bf6e9SNicholas Bellinger lu_gp_cg->default_groups = NULL; 2994c66ac9dbSNicholas Bellinger 2995e3d6f909SAndy Grover alua_cg = &alua_group; 2996c66ac9dbSNicholas Bellinger for (i = 0; alua_cg->default_groups[i]; i++) { 2997c66ac9dbSNicholas Bellinger item = &alua_cg->default_groups[i]->cg_item; 2998c66ac9dbSNicholas Bellinger alua_cg->default_groups[i] = NULL; 2999c66ac9dbSNicholas Bellinger config_item_put(item); 3000c66ac9dbSNicholas Bellinger } 3001c66ac9dbSNicholas Bellinger kfree(alua_cg->default_groups); 30027c2bf6e9SNicholas Bellinger alua_cg->default_groups = NULL; 3003c66ac9dbSNicholas Bellinger 3004e3d6f909SAndy Grover hba_cg = &target_core_hbagroup; 3005c66ac9dbSNicholas Bellinger for (i = 0; hba_cg->default_groups[i]; i++) { 3006c66ac9dbSNicholas Bellinger item = &hba_cg->default_groups[i]->cg_item; 3007c66ac9dbSNicholas Bellinger hba_cg->default_groups[i] = NULL; 3008c66ac9dbSNicholas Bellinger config_item_put(item); 3009c66ac9dbSNicholas Bellinger } 3010c66ac9dbSNicholas Bellinger kfree(hba_cg->default_groups); 30117c2bf6e9SNicholas Bellinger hba_cg->default_groups = NULL; 30127c2bf6e9SNicholas Bellinger /* 30137c2bf6e9SNicholas Bellinger * We expect subsys->su_group.default_groups to be released 30147c2bf6e9SNicholas Bellinger * by configfs subsystem provider logic.. 30157c2bf6e9SNicholas Bellinger */ 3016d588cf8fSChristoph Hellwig configfs_unregister_subsystem(&target_core_fabrics); 3017d588cf8fSChristoph Hellwig kfree(target_core_fabrics.su_group.default_groups); 3018c66ac9dbSNicholas Bellinger 3019e3d6f909SAndy Grover core_alua_free_lu_gp(default_lu_gp); 3020e3d6f909SAndy Grover default_lu_gp = NULL; 30217c2bf6e9SNicholas Bellinger 30226708bb27SAndy Grover pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" 3023c66ac9dbSNicholas Bellinger " Infrastructure\n"); 3024c66ac9dbSNicholas Bellinger 3025c66ac9dbSNicholas Bellinger core_dev_release_virtual_lun0(); 3026c66ac9dbSNicholas Bellinger rd_module_exit(); 3027f99715acSNicholas Bellinger target_xcopy_release_pt(); 3028e3d6f909SAndy Grover release_se_kmem_caches(); 3029c66ac9dbSNicholas Bellinger } 3030c66ac9dbSNicholas Bellinger 3031c66ac9dbSNicholas Bellinger MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); 3032c66ac9dbSNicholas Bellinger MODULE_AUTHOR("nab@Linux-iSCSI.org"); 3033c66ac9dbSNicholas Bellinger MODULE_LICENSE("GPL"); 3034c66ac9dbSNicholas Bellinger 3035c66ac9dbSNicholas Bellinger module_init(target_core_init_configfs); 3036c66ac9dbSNicholas Bellinger module_exit(target_core_exit_configfs); 3037