Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1 | /******************************************************************************* |
| 2 | * Filename: target_core_configfs.c |
| 3 | * |
| 4 | * This file contains ConfigFS logic for the Generic Target Engine project. |
| 5 | * |
Nicholas Bellinger | fd9a11d | 2012-11-09 14:51:48 -0800 | [diff] [blame] | 6 | * (c) Copyright 2008-2012 RisingTide Systems LLC. |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 7 | * |
| 8 | * Nicholas A. Bellinger <nab@kernel.org> |
| 9 | * |
| 10 | * based on configfs Copyright (C) 2005 Oracle. All rights reserved. |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | ****************************************************************************/ |
| 22 | |
| 23 | #include <linux/module.h> |
| 24 | #include <linux/moduleparam.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 25 | #include <generated/utsrelease.h> |
| 26 | #include <linux/utsname.h> |
| 27 | #include <linux/init.h> |
| 28 | #include <linux/fs.h> |
| 29 | #include <linux/namei.h> |
| 30 | #include <linux/slab.h> |
| 31 | #include <linux/types.h> |
| 32 | #include <linux/delay.h> |
| 33 | #include <linux/unistd.h> |
| 34 | #include <linux/string.h> |
| 35 | #include <linux/parser.h> |
| 36 | #include <linux/syscalls.h> |
| 37 | #include <linux/configfs.h> |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 38 | #include <linux/spinlock.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 39 | |
| 40 | #include <target/target_core_base.h> |
Christoph Hellwig | c4795fb | 2011-11-16 09:46:48 -0500 | [diff] [blame] | 41 | #include <target/target_core_backend.h> |
| 42 | #include <target/target_core_fabric.h> |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 43 | #include <target/target_core_fabric_configfs.h> |
| 44 | #include <target/target_core_configfs.h> |
| 45 | #include <target/configfs_macros.h> |
| 46 | |
Christoph Hellwig | e26d99a | 2011-11-14 12:30:30 -0500 | [diff] [blame] | 47 | #include "target_core_internal.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 48 | #include "target_core_alua.h" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 49 | #include "target_core_pr.h" |
| 50 | #include "target_core_rd.h" |
| 51 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 52 | extern struct t10_alua_lu_gp *default_lu_gp; |
| 53 | |
Roland Dreier | d0f474e | 2012-01-12 10:41:18 -0800 | [diff] [blame] | 54 | static LIST_HEAD(g_tf_list); |
| 55 | static DEFINE_MUTEX(g_tf_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 56 | |
| 57 | struct target_core_configfs_attribute { |
| 58 | struct configfs_attribute attr; |
| 59 | ssize_t (*show)(void *, char *); |
| 60 | ssize_t (*store)(void *, const char *, size_t); |
| 61 | }; |
| 62 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 63 | static struct config_group target_core_hbagroup; |
| 64 | static struct config_group alua_group; |
| 65 | static struct config_group alua_lu_gps_group; |
| 66 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 67 | static inline struct se_hba * |
| 68 | item_to_hba(struct config_item *item) |
| 69 | { |
| 70 | return container_of(to_config_group(item), struct se_hba, hba_group); |
| 71 | } |
| 72 | |
| 73 | /* |
| 74 | * Attributes for /sys/kernel/config/target/ |
| 75 | */ |
| 76 | static ssize_t target_core_attr_show(struct config_item *item, |
| 77 | struct configfs_attribute *attr, |
| 78 | char *page) |
| 79 | { |
| 80 | return sprintf(page, "Target Engine Core ConfigFS Infrastructure %s" |
| 81 | " on %s/%s on "UTS_RELEASE"\n", TARGET_CORE_CONFIGFS_VERSION, |
| 82 | utsname()->sysname, utsname()->machine); |
| 83 | } |
| 84 | |
| 85 | static struct configfs_item_operations target_core_fabric_item_ops = { |
| 86 | .show_attribute = target_core_attr_show, |
| 87 | }; |
| 88 | |
| 89 | static struct configfs_attribute target_core_item_attr_version = { |
| 90 | .ca_owner = THIS_MODULE, |
| 91 | .ca_name = "version", |
| 92 | .ca_mode = S_IRUGO, |
| 93 | }; |
| 94 | |
| 95 | static struct target_fabric_configfs *target_core_get_fabric( |
| 96 | const char *name) |
| 97 | { |
| 98 | struct target_fabric_configfs *tf; |
| 99 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 100 | if (!name) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 101 | return NULL; |
| 102 | |
| 103 | mutex_lock(&g_tf_lock); |
| 104 | list_for_each_entry(tf, &g_tf_list, tf_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 105 | if (!strcmp(tf->tf_name, name)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 106 | atomic_inc(&tf->tf_access_cnt); |
| 107 | mutex_unlock(&g_tf_lock); |
| 108 | return tf; |
| 109 | } |
| 110 | } |
| 111 | mutex_unlock(&g_tf_lock); |
| 112 | |
| 113 | return NULL; |
| 114 | } |
| 115 | |
| 116 | /* |
| 117 | * Called from struct target_core_group_ops->make_group() |
| 118 | */ |
| 119 | static struct config_group *target_core_register_fabric( |
| 120 | struct config_group *group, |
| 121 | const char *name) |
| 122 | { |
| 123 | struct target_fabric_configfs *tf; |
| 124 | int ret; |
| 125 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 126 | pr_debug("Target_Core_ConfigFS: REGISTER -> group: %p name:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 127 | " %s\n", group, name); |
| 128 | /* |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 129 | * Below are some hardcoded request_module() calls to automatically |
| 130 | * local fabric modules when the following is called: |
| 131 | * |
| 132 | * mkdir -p /sys/kernel/config/target/$MODULE_NAME |
| 133 | * |
| 134 | * Note that this does not limit which TCM fabric module can be |
| 135 | * registered, but simply provids auto loading logic for modules with |
| 136 | * mkdir(2) system calls with known TCM fabric modules. |
| 137 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 138 | if (!strncmp(name, "iscsi", 5)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 139 | /* |
| 140 | * Automatically load the LIO Target fabric module when the |
| 141 | * following is called: |
| 142 | * |
| 143 | * mkdir -p $CONFIGFS/target/iscsi |
| 144 | */ |
| 145 | ret = request_module("iscsi_target_mod"); |
| 146 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 147 | pr_err("request_module() failed for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 148 | " iscsi_target_mod.ko: %d\n", ret); |
| 149 | return ERR_PTR(-EINVAL); |
| 150 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 151 | } else if (!strncmp(name, "loopback", 8)) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 152 | /* |
| 153 | * Automatically load the tcm_loop fabric module when the |
| 154 | * following is called: |
| 155 | * |
| 156 | * mkdir -p $CONFIGFS/target/loopback |
| 157 | */ |
| 158 | ret = request_module("tcm_loop"); |
| 159 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 160 | pr_err("request_module() failed for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 161 | " tcm_loop.ko: %d\n", ret); |
| 162 | return ERR_PTR(-EINVAL); |
| 163 | } |
| 164 | } |
| 165 | |
| 166 | tf = target_core_get_fabric(name); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 167 | if (!tf) { |
| 168 | pr_err("target_core_get_fabric() failed for %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 169 | name); |
| 170 | return ERR_PTR(-EINVAL); |
| 171 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 172 | pr_debug("Target_Core_ConfigFS: REGISTER -> Located fabric:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 173 | " %s\n", tf->tf_name); |
| 174 | /* |
| 175 | * On a successful target_core_get_fabric() look, the returned |
| 176 | * struct target_fabric_configfs *tf will contain a usage reference. |
| 177 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 178 | pr_debug("Target_Core_ConfigFS: REGISTER tfc_wwn_cit -> %p\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 179 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
| 180 | |
| 181 | tf->tf_group.default_groups = tf->tf_default_groups; |
| 182 | tf->tf_group.default_groups[0] = &tf->tf_disc_group; |
| 183 | tf->tf_group.default_groups[1] = NULL; |
| 184 | |
| 185 | config_group_init_type_name(&tf->tf_group, name, |
| 186 | &TF_CIT_TMPL(tf)->tfc_wwn_cit); |
| 187 | config_group_init_type_name(&tf->tf_disc_group, "discovery_auth", |
| 188 | &TF_CIT_TMPL(tf)->tfc_discovery_cit); |
| 189 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 190 | pr_debug("Target_Core_ConfigFS: REGISTER -> Allocated Fabric:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 191 | " %s\n", tf->tf_group.cg_item.ci_name); |
| 192 | /* |
| 193 | * Setup tf_ops.tf_subsys pointer for usage with configfs_depend_item() |
| 194 | */ |
| 195 | tf->tf_ops.tf_subsys = tf->tf_subsys; |
| 196 | tf->tf_fabric = &tf->tf_group.cg_item; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 197 | pr_debug("Target_Core_ConfigFS: REGISTER -> Set tf->tf_fabric" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 198 | " for %s\n", name); |
| 199 | |
| 200 | return &tf->tf_group; |
| 201 | } |
| 202 | |
| 203 | /* |
| 204 | * Called from struct target_core_group_ops->drop_item() |
| 205 | */ |
| 206 | static void target_core_deregister_fabric( |
| 207 | struct config_group *group, |
| 208 | struct config_item *item) |
| 209 | { |
| 210 | struct target_fabric_configfs *tf = container_of( |
| 211 | to_config_group(item), struct target_fabric_configfs, tf_group); |
| 212 | struct config_group *tf_group; |
| 213 | struct config_item *df_item; |
| 214 | int i; |
| 215 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 216 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Looking up %s in" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 217 | " tf list\n", config_item_name(item)); |
| 218 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 219 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> located fabric:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 220 | " %s\n", tf->tf_name); |
| 221 | atomic_dec(&tf->tf_access_cnt); |
| 222 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 223 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 224 | " tf->tf_fabric for %s\n", tf->tf_name); |
| 225 | tf->tf_fabric = NULL; |
| 226 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 227 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing ci" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 228 | " %s\n", config_item_name(item)); |
| 229 | |
| 230 | tf_group = &tf->tf_group; |
| 231 | for (i = 0; tf_group->default_groups[i]; i++) { |
| 232 | df_item = &tf_group->default_groups[i]->cg_item; |
| 233 | tf_group->default_groups[i] = NULL; |
| 234 | config_item_put(df_item); |
| 235 | } |
| 236 | config_item_put(item); |
| 237 | } |
| 238 | |
| 239 | static struct configfs_group_operations target_core_fabric_group_ops = { |
| 240 | .make_group = &target_core_register_fabric, |
| 241 | .drop_item = &target_core_deregister_fabric, |
| 242 | }; |
| 243 | |
| 244 | /* |
| 245 | * All item attributes appearing in /sys/kernel/target/ appear here. |
| 246 | */ |
| 247 | static struct configfs_attribute *target_core_fabric_item_attrs[] = { |
| 248 | &target_core_item_attr_version, |
| 249 | NULL, |
| 250 | }; |
| 251 | |
| 252 | /* |
| 253 | * Provides Fabrics Groups and Item Attributes for /sys/kernel/config/target/ |
| 254 | */ |
| 255 | static struct config_item_type target_core_fabrics_item = { |
| 256 | .ct_item_ops = &target_core_fabric_item_ops, |
| 257 | .ct_group_ops = &target_core_fabric_group_ops, |
| 258 | .ct_attrs = target_core_fabric_item_attrs, |
| 259 | .ct_owner = THIS_MODULE, |
| 260 | }; |
| 261 | |
| 262 | static struct configfs_subsystem target_core_fabrics = { |
| 263 | .su_group = { |
| 264 | .cg_item = { |
| 265 | .ci_namebuf = "target", |
| 266 | .ci_type = &target_core_fabrics_item, |
| 267 | }, |
| 268 | }, |
| 269 | }; |
| 270 | |
| 271 | static struct configfs_subsystem *target_core_subsystem[] = { |
| 272 | &target_core_fabrics, |
| 273 | NULL, |
| 274 | }; |
| 275 | |
| 276 | /*############################################################################## |
| 277 | // Start functions called by external Target Fabrics Modules |
| 278 | //############################################################################*/ |
| 279 | |
| 280 | /* |
| 281 | * First function called by fabric modules to: |
| 282 | * |
| 283 | * 1) Allocate a struct target_fabric_configfs and save the *fabric_cit pointer. |
| 284 | * 2) Add struct target_fabric_configfs to g_tf_list |
| 285 | * 3) Return struct target_fabric_configfs to fabric module to be passed |
| 286 | * into target_fabric_configfs_register(). |
| 287 | */ |
| 288 | struct target_fabric_configfs *target_fabric_configfs_init( |
| 289 | struct module *fabric_mod, |
| 290 | const char *name) |
| 291 | { |
| 292 | struct target_fabric_configfs *tf; |
| 293 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 294 | if (!(name)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 295 | pr_err("Unable to locate passed fabric name\n"); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 296 | return ERR_PTR(-EINVAL); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 297 | } |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 298 | if (strlen(name) >= TARGET_FABRIC_NAME_SIZE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 299 | pr_err("Passed name: %s exceeds TARGET_FABRIC" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 300 | "_NAME_SIZE\n", name); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 301 | return ERR_PTR(-EINVAL); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 302 | } |
| 303 | |
| 304 | tf = kzalloc(sizeof(struct target_fabric_configfs), GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 305 | if (!tf) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 306 | return ERR_PTR(-ENOMEM); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 307 | |
| 308 | INIT_LIST_HEAD(&tf->tf_list); |
| 309 | atomic_set(&tf->tf_access_cnt, 0); |
| 310 | /* |
| 311 | * Setup the default generic struct config_item_type's (cits) in |
| 312 | * struct target_fabric_configfs->tf_cit_tmpl |
| 313 | */ |
| 314 | tf->tf_module = fabric_mod; |
| 315 | target_fabric_setup_cits(tf); |
| 316 | |
| 317 | tf->tf_subsys = target_core_subsystem[0]; |
| 318 | snprintf(tf->tf_name, TARGET_FABRIC_NAME_SIZE, "%s", name); |
| 319 | |
| 320 | mutex_lock(&g_tf_lock); |
| 321 | list_add_tail(&tf->tf_list, &g_tf_list); |
| 322 | mutex_unlock(&g_tf_lock); |
| 323 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 324 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 325 | ">>>>>>>>>>>>>>\n"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 326 | pr_debug("Initialized struct target_fabric_configfs: %p for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 327 | " %s\n", tf, tf->tf_name); |
| 328 | return tf; |
| 329 | } |
| 330 | EXPORT_SYMBOL(target_fabric_configfs_init); |
| 331 | |
| 332 | /* |
| 333 | * Called by fabric plugins after FAILED target_fabric_configfs_register() call. |
| 334 | */ |
| 335 | void target_fabric_configfs_free( |
| 336 | struct target_fabric_configfs *tf) |
| 337 | { |
| 338 | mutex_lock(&g_tf_lock); |
| 339 | list_del(&tf->tf_list); |
| 340 | mutex_unlock(&g_tf_lock); |
| 341 | |
| 342 | kfree(tf); |
| 343 | } |
| 344 | EXPORT_SYMBOL(target_fabric_configfs_free); |
| 345 | |
| 346 | /* |
| 347 | * Perform a sanity check of the passed tf->tf_ops before completing |
| 348 | * TCM fabric module registration. |
| 349 | */ |
| 350 | static int target_fabric_tf_ops_check( |
| 351 | struct target_fabric_configfs *tf) |
| 352 | { |
| 353 | struct target_core_fabric_ops *tfo = &tf->tf_ops; |
| 354 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 355 | if (!tfo->get_fabric_name) { |
| 356 | pr_err("Missing tfo->get_fabric_name()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 357 | return -EINVAL; |
| 358 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 359 | if (!tfo->get_fabric_proto_ident) { |
| 360 | pr_err("Missing tfo->get_fabric_proto_ident()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 361 | return -EINVAL; |
| 362 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 363 | if (!tfo->tpg_get_wwn) { |
| 364 | pr_err("Missing tfo->tpg_get_wwn()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 365 | return -EINVAL; |
| 366 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 367 | if (!tfo->tpg_get_tag) { |
| 368 | pr_err("Missing tfo->tpg_get_tag()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 369 | return -EINVAL; |
| 370 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 371 | if (!tfo->tpg_get_default_depth) { |
| 372 | pr_err("Missing tfo->tpg_get_default_depth()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 373 | return -EINVAL; |
| 374 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 375 | if (!tfo->tpg_get_pr_transport_id) { |
| 376 | pr_err("Missing tfo->tpg_get_pr_transport_id()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 377 | return -EINVAL; |
| 378 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 379 | if (!tfo->tpg_get_pr_transport_id_len) { |
| 380 | pr_err("Missing tfo->tpg_get_pr_transport_id_len()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 381 | return -EINVAL; |
| 382 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 383 | if (!tfo->tpg_check_demo_mode) { |
| 384 | pr_err("Missing tfo->tpg_check_demo_mode()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 385 | return -EINVAL; |
| 386 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 387 | if (!tfo->tpg_check_demo_mode_cache) { |
| 388 | pr_err("Missing tfo->tpg_check_demo_mode_cache()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 389 | return -EINVAL; |
| 390 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 391 | if (!tfo->tpg_check_demo_mode_write_protect) { |
| 392 | pr_err("Missing tfo->tpg_check_demo_mode_write_protect()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 393 | return -EINVAL; |
| 394 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 395 | if (!tfo->tpg_check_prod_mode_write_protect) { |
| 396 | pr_err("Missing tfo->tpg_check_prod_mode_write_protect()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 397 | return -EINVAL; |
| 398 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 399 | if (!tfo->tpg_alloc_fabric_acl) { |
| 400 | pr_err("Missing tfo->tpg_alloc_fabric_acl()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 401 | return -EINVAL; |
| 402 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 403 | if (!tfo->tpg_release_fabric_acl) { |
| 404 | pr_err("Missing tfo->tpg_release_fabric_acl()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 405 | return -EINVAL; |
| 406 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 407 | if (!tfo->tpg_get_inst_index) { |
| 408 | pr_err("Missing tfo->tpg_get_inst_index()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 409 | return -EINVAL; |
| 410 | } |
Christoph Hellwig | 3546297 | 2011-05-31 23:56:57 -0400 | [diff] [blame] | 411 | if (!tfo->release_cmd) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 412 | pr_err("Missing tfo->release_cmd()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 413 | return -EINVAL; |
| 414 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 415 | if (!tfo->shutdown_session) { |
| 416 | pr_err("Missing tfo->shutdown_session()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 417 | return -EINVAL; |
| 418 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 419 | if (!tfo->close_session) { |
| 420 | pr_err("Missing tfo->close_session()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 421 | return -EINVAL; |
| 422 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 423 | if (!tfo->sess_get_index) { |
| 424 | pr_err("Missing tfo->sess_get_index()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 425 | return -EINVAL; |
| 426 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 427 | if (!tfo->write_pending) { |
| 428 | pr_err("Missing tfo->write_pending()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 429 | return -EINVAL; |
| 430 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 431 | if (!tfo->write_pending_status) { |
| 432 | pr_err("Missing tfo->write_pending_status()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 433 | return -EINVAL; |
| 434 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 435 | if (!tfo->set_default_node_attributes) { |
| 436 | pr_err("Missing tfo->set_default_node_attributes()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 437 | return -EINVAL; |
| 438 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 439 | if (!tfo->get_task_tag) { |
| 440 | pr_err("Missing tfo->get_task_tag()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 441 | return -EINVAL; |
| 442 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 443 | if (!tfo->get_cmd_state) { |
| 444 | pr_err("Missing tfo->get_cmd_state()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 445 | return -EINVAL; |
| 446 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 447 | if (!tfo->queue_data_in) { |
| 448 | pr_err("Missing tfo->queue_data_in()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 449 | return -EINVAL; |
| 450 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 451 | if (!tfo->queue_status) { |
| 452 | pr_err("Missing tfo->queue_status()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 453 | return -EINVAL; |
| 454 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 455 | if (!tfo->queue_tm_rsp) { |
| 456 | pr_err("Missing tfo->queue_tm_rsp()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 457 | return -EINVAL; |
| 458 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 459 | /* |
| 460 | * We at least require tfo->fabric_make_wwn(), tfo->fabric_drop_wwn() |
| 461 | * tfo->fabric_make_tpg() and tfo->fabric_drop_tpg() in |
| 462 | * target_core_fabric_configfs.c WWN+TPG group context code. |
| 463 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 464 | if (!tfo->fabric_make_wwn) { |
| 465 | pr_err("Missing tfo->fabric_make_wwn()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 466 | return -EINVAL; |
| 467 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 468 | if (!tfo->fabric_drop_wwn) { |
| 469 | pr_err("Missing tfo->fabric_drop_wwn()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 470 | return -EINVAL; |
| 471 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 472 | if (!tfo->fabric_make_tpg) { |
| 473 | pr_err("Missing tfo->fabric_make_tpg()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 474 | return -EINVAL; |
| 475 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 476 | if (!tfo->fabric_drop_tpg) { |
| 477 | pr_err("Missing tfo->fabric_drop_tpg()\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 478 | return -EINVAL; |
| 479 | } |
| 480 | |
| 481 | return 0; |
| 482 | } |
| 483 | |
| 484 | /* |
| 485 | * Called 2nd from fabric module with returned parameter of |
| 486 | * struct target_fabric_configfs * from target_fabric_configfs_init(). |
| 487 | * |
| 488 | * Upon a successful registration, the new fabric's struct config_item is |
| 489 | * return. Also, a pointer to this struct is set in the passed |
| 490 | * struct target_fabric_configfs. |
| 491 | */ |
| 492 | int target_fabric_configfs_register( |
| 493 | struct target_fabric_configfs *tf) |
| 494 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 495 | int ret; |
| 496 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 497 | if (!tf) { |
| 498 | pr_err("Unable to locate target_fabric_configfs" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 499 | " pointer\n"); |
| 500 | return -EINVAL; |
| 501 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 502 | if (!tf->tf_subsys) { |
| 503 | pr_err("Unable to target struct config_subsystem" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 504 | " pointer\n"); |
| 505 | return -EINVAL; |
| 506 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 507 | ret = target_fabric_tf_ops_check(tf); |
| 508 | if (ret < 0) |
| 509 | return ret; |
| 510 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 511 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 512 | ">>>>>>>>>>\n"); |
| 513 | return 0; |
| 514 | } |
| 515 | EXPORT_SYMBOL(target_fabric_configfs_register); |
| 516 | |
| 517 | void target_fabric_configfs_deregister( |
| 518 | struct target_fabric_configfs *tf) |
| 519 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 520 | struct configfs_subsystem *su; |
| 521 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 522 | if (!tf) { |
| 523 | pr_err("Unable to locate passed target_fabric_" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 524 | "configfs\n"); |
| 525 | return; |
| 526 | } |
| 527 | su = tf->tf_subsys; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 528 | if (!su) { |
| 529 | pr_err("Unable to locate passed tf->tf_subsys" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 530 | " pointer\n"); |
| 531 | return; |
| 532 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 533 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< BEGIN FABRIC API >>>>>>>>>>" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 534 | ">>>>>>>>>>>>\n"); |
| 535 | mutex_lock(&g_tf_lock); |
| 536 | if (atomic_read(&tf->tf_access_cnt)) { |
| 537 | mutex_unlock(&g_tf_lock); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 538 | pr_err("Non zero tf->tf_access_cnt for fabric %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 539 | tf->tf_name); |
| 540 | BUG(); |
| 541 | } |
| 542 | list_del(&tf->tf_list); |
| 543 | mutex_unlock(&g_tf_lock); |
| 544 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 545 | pr_debug("Target_Core_ConfigFS: DEREGISTER -> Releasing tf:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 546 | " %s\n", tf->tf_name); |
| 547 | tf->tf_module = NULL; |
| 548 | tf->tf_subsys = NULL; |
| 549 | kfree(tf); |
| 550 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 551 | pr_debug("<<<<<<<<<<<<<<<<<<<<<< END FABRIC API >>>>>>>>>>>>>>>>>" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 552 | ">>>>>\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 553 | } |
| 554 | EXPORT_SYMBOL(target_fabric_configfs_deregister); |
| 555 | |
| 556 | /*############################################################################## |
| 557 | // Stop functions called by external Target Fabrics Modules |
| 558 | //############################################################################*/ |
| 559 | |
| 560 | /* Start functions for struct config_item_type target_core_dev_attrib_cit */ |
| 561 | |
| 562 | #define DEF_DEV_ATTRIB_SHOW(_name) \ |
| 563 | static ssize_t target_core_dev_show_attr_##_name( \ |
| 564 | struct se_dev_attrib *da, \ |
| 565 | char *page) \ |
| 566 | { \ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 567 | return snprintf(page, PAGE_SIZE, "%u\n", \ |
| 568 | (u32)da->da_dev->dev_attrib._name); \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 569 | } |
| 570 | |
| 571 | #define DEF_DEV_ATTRIB_STORE(_name) \ |
| 572 | static ssize_t target_core_dev_store_attr_##_name( \ |
| 573 | struct se_dev_attrib *da, \ |
| 574 | const char *page, \ |
| 575 | size_t count) \ |
| 576 | { \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 577 | unsigned long val; \ |
| 578 | int ret; \ |
| 579 | \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 580 | ret = strict_strtoul(page, 0, &val); \ |
| 581 | if (ret < 0) { \ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 582 | pr_err("strict_strtoul() failed with" \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 583 | " ret: %d\n", ret); \ |
| 584 | return -EINVAL; \ |
| 585 | } \ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 586 | ret = se_dev_set_##_name(da->da_dev, (u32)val); \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 587 | \ |
| 588 | return (!ret) ? count : -EINVAL; \ |
| 589 | } |
| 590 | |
| 591 | #define DEF_DEV_ATTRIB(_name) \ |
| 592 | DEF_DEV_ATTRIB_SHOW(_name); \ |
| 593 | DEF_DEV_ATTRIB_STORE(_name); |
| 594 | |
| 595 | #define DEF_DEV_ATTRIB_RO(_name) \ |
| 596 | DEF_DEV_ATTRIB_SHOW(_name); |
| 597 | |
| 598 | CONFIGFS_EATTR_STRUCT(target_core_dev_attrib, se_dev_attrib); |
| 599 | #define SE_DEV_ATTR(_name, _mode) \ |
| 600 | static struct target_core_dev_attrib_attribute \ |
| 601 | target_core_dev_attrib_##_name = \ |
| 602 | __CONFIGFS_EATTR(_name, _mode, \ |
| 603 | target_core_dev_show_attr_##_name, \ |
| 604 | target_core_dev_store_attr_##_name); |
| 605 | |
| 606 | #define SE_DEV_ATTR_RO(_name); \ |
| 607 | static struct target_core_dev_attrib_attribute \ |
| 608 | target_core_dev_attrib_##_name = \ |
| 609 | __CONFIGFS_EATTR_RO(_name, \ |
| 610 | target_core_dev_show_attr_##_name); |
| 611 | |
Tregaron Bayly | adfa957 | 2013-01-31 15:30:24 -0700 | [diff] [blame] | 612 | DEF_DEV_ATTRIB(emulate_model_alias); |
| 613 | SE_DEV_ATTR(emulate_model_alias, S_IRUGO | S_IWUSR); |
| 614 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 615 | DEF_DEV_ATTRIB(emulate_dpo); |
| 616 | SE_DEV_ATTR(emulate_dpo, S_IRUGO | S_IWUSR); |
| 617 | |
| 618 | DEF_DEV_ATTRIB(emulate_fua_write); |
| 619 | SE_DEV_ATTR(emulate_fua_write, S_IRUGO | S_IWUSR); |
| 620 | |
| 621 | DEF_DEV_ATTRIB(emulate_fua_read); |
| 622 | SE_DEV_ATTR(emulate_fua_read, S_IRUGO | S_IWUSR); |
| 623 | |
| 624 | DEF_DEV_ATTRIB(emulate_write_cache); |
| 625 | SE_DEV_ATTR(emulate_write_cache, S_IRUGO | S_IWUSR); |
| 626 | |
| 627 | DEF_DEV_ATTRIB(emulate_ua_intlck_ctrl); |
| 628 | SE_DEV_ATTR(emulate_ua_intlck_ctrl, S_IRUGO | S_IWUSR); |
| 629 | |
| 630 | DEF_DEV_ATTRIB(emulate_tas); |
| 631 | SE_DEV_ATTR(emulate_tas, S_IRUGO | S_IWUSR); |
| 632 | |
| 633 | DEF_DEV_ATTRIB(emulate_tpu); |
| 634 | SE_DEV_ATTR(emulate_tpu, S_IRUGO | S_IWUSR); |
| 635 | |
| 636 | DEF_DEV_ATTRIB(emulate_tpws); |
| 637 | SE_DEV_ATTR(emulate_tpws, S_IRUGO | S_IWUSR); |
| 638 | |
| 639 | DEF_DEV_ATTRIB(enforce_pr_isids); |
| 640 | SE_DEV_ATTR(enforce_pr_isids, S_IRUGO | S_IWUSR); |
| 641 | |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 642 | DEF_DEV_ATTRIB(is_nonrot); |
| 643 | SE_DEV_ATTR(is_nonrot, S_IRUGO | S_IWUSR); |
| 644 | |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 645 | DEF_DEV_ATTRIB(emulate_rest_reord); |
| 646 | SE_DEV_ATTR(emulate_rest_reord, S_IRUGO | S_IWUSR); |
| 647 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 648 | DEF_DEV_ATTRIB_RO(hw_block_size); |
| 649 | SE_DEV_ATTR_RO(hw_block_size); |
| 650 | |
| 651 | DEF_DEV_ATTRIB(block_size); |
| 652 | SE_DEV_ATTR(block_size, S_IRUGO | S_IWUSR); |
| 653 | |
| 654 | DEF_DEV_ATTRIB_RO(hw_max_sectors); |
| 655 | SE_DEV_ATTR_RO(hw_max_sectors); |
| 656 | |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 657 | DEF_DEV_ATTRIB(fabric_max_sectors); |
| 658 | SE_DEV_ATTR(fabric_max_sectors, S_IRUGO | S_IWUSR); |
| 659 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 660 | DEF_DEV_ATTRIB(optimal_sectors); |
| 661 | SE_DEV_ATTR(optimal_sectors, S_IRUGO | S_IWUSR); |
| 662 | |
| 663 | DEF_DEV_ATTRIB_RO(hw_queue_depth); |
| 664 | SE_DEV_ATTR_RO(hw_queue_depth); |
| 665 | |
| 666 | DEF_DEV_ATTRIB(queue_depth); |
| 667 | SE_DEV_ATTR(queue_depth, S_IRUGO | S_IWUSR); |
| 668 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 669 | DEF_DEV_ATTRIB(max_unmap_lba_count); |
| 670 | SE_DEV_ATTR(max_unmap_lba_count, S_IRUGO | S_IWUSR); |
| 671 | |
| 672 | DEF_DEV_ATTRIB(max_unmap_block_desc_count); |
| 673 | SE_DEV_ATTR(max_unmap_block_desc_count, S_IRUGO | S_IWUSR); |
| 674 | |
| 675 | DEF_DEV_ATTRIB(unmap_granularity); |
| 676 | SE_DEV_ATTR(unmap_granularity, S_IRUGO | S_IWUSR); |
| 677 | |
| 678 | DEF_DEV_ATTRIB(unmap_granularity_alignment); |
| 679 | SE_DEV_ATTR(unmap_granularity_alignment, S_IRUGO | S_IWUSR); |
| 680 | |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 681 | DEF_DEV_ATTRIB(max_write_same_len); |
| 682 | SE_DEV_ATTR(max_write_same_len, S_IRUGO | S_IWUSR); |
| 683 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 684 | CONFIGFS_EATTR_OPS(target_core_dev_attrib, se_dev_attrib, da_group); |
| 685 | |
| 686 | static struct configfs_attribute *target_core_dev_attrib_attrs[] = { |
Tregaron Bayly | adfa957 | 2013-01-31 15:30:24 -0700 | [diff] [blame] | 687 | &target_core_dev_attrib_emulate_model_alias.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 688 | &target_core_dev_attrib_emulate_dpo.attr, |
| 689 | &target_core_dev_attrib_emulate_fua_write.attr, |
| 690 | &target_core_dev_attrib_emulate_fua_read.attr, |
| 691 | &target_core_dev_attrib_emulate_write_cache.attr, |
| 692 | &target_core_dev_attrib_emulate_ua_intlck_ctrl.attr, |
| 693 | &target_core_dev_attrib_emulate_tas.attr, |
| 694 | &target_core_dev_attrib_emulate_tpu.attr, |
| 695 | &target_core_dev_attrib_emulate_tpws.attr, |
| 696 | &target_core_dev_attrib_enforce_pr_isids.attr, |
Roland Dreier | e22a7f0 | 2011-07-05 13:34:52 -0700 | [diff] [blame] | 697 | &target_core_dev_attrib_is_nonrot.attr, |
Nicholas Bellinger | 5de619a | 2011-07-17 02:57:58 -0700 | [diff] [blame] | 698 | &target_core_dev_attrib_emulate_rest_reord.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 699 | &target_core_dev_attrib_hw_block_size.attr, |
| 700 | &target_core_dev_attrib_block_size.attr, |
| 701 | &target_core_dev_attrib_hw_max_sectors.attr, |
Roland Dreier | 015487b | 2012-02-13 16:18:17 -0800 | [diff] [blame] | 702 | &target_core_dev_attrib_fabric_max_sectors.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 703 | &target_core_dev_attrib_optimal_sectors.attr, |
| 704 | &target_core_dev_attrib_hw_queue_depth.attr, |
| 705 | &target_core_dev_attrib_queue_depth.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 706 | &target_core_dev_attrib_max_unmap_lba_count.attr, |
| 707 | &target_core_dev_attrib_max_unmap_block_desc_count.attr, |
| 708 | &target_core_dev_attrib_unmap_granularity.attr, |
| 709 | &target_core_dev_attrib_unmap_granularity_alignment.attr, |
Nicholas Bellinger | 773cbaf | 2012-11-15 11:02:49 -0800 | [diff] [blame] | 710 | &target_core_dev_attrib_max_write_same_len.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 711 | NULL, |
| 712 | }; |
| 713 | |
| 714 | static struct configfs_item_operations target_core_dev_attrib_ops = { |
| 715 | .show_attribute = target_core_dev_attrib_attr_show, |
| 716 | .store_attribute = target_core_dev_attrib_attr_store, |
| 717 | }; |
| 718 | |
| 719 | static struct config_item_type target_core_dev_attrib_cit = { |
| 720 | .ct_item_ops = &target_core_dev_attrib_ops, |
| 721 | .ct_attrs = target_core_dev_attrib_attrs, |
| 722 | .ct_owner = THIS_MODULE, |
| 723 | }; |
| 724 | |
| 725 | /* End functions for struct config_item_type target_core_dev_attrib_cit */ |
| 726 | |
| 727 | /* Start functions for struct config_item_type target_core_dev_wwn_cit */ |
| 728 | |
| 729 | CONFIGFS_EATTR_STRUCT(target_core_dev_wwn, t10_wwn); |
| 730 | #define SE_DEV_WWN_ATTR(_name, _mode) \ |
| 731 | static struct target_core_dev_wwn_attribute target_core_dev_wwn_##_name = \ |
| 732 | __CONFIGFS_EATTR(_name, _mode, \ |
| 733 | target_core_dev_wwn_show_attr_##_name, \ |
| 734 | target_core_dev_wwn_store_attr_##_name); |
| 735 | |
| 736 | #define SE_DEV_WWN_ATTR_RO(_name); \ |
| 737 | do { \ |
| 738 | static struct target_core_dev_wwn_attribute \ |
| 739 | target_core_dev_wwn_##_name = \ |
| 740 | __CONFIGFS_EATTR_RO(_name, \ |
| 741 | target_core_dev_wwn_show_attr_##_name); \ |
| 742 | } while (0); |
| 743 | |
| 744 | /* |
| 745 | * VPD page 0x80 Unit serial |
| 746 | */ |
| 747 | static ssize_t target_core_dev_wwn_show_attr_vpd_unit_serial( |
| 748 | struct t10_wwn *t10_wwn, |
| 749 | char *page) |
| 750 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 751 | return sprintf(page, "T10 VPD Unit Serial Number: %s\n", |
| 752 | &t10_wwn->unit_serial[0]); |
| 753 | } |
| 754 | |
| 755 | static ssize_t target_core_dev_wwn_store_attr_vpd_unit_serial( |
| 756 | struct t10_wwn *t10_wwn, |
| 757 | const char *page, |
| 758 | size_t count) |
| 759 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 760 | struct se_device *dev = t10_wwn->t10_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 761 | unsigned char buf[INQUIRY_VPD_SERIAL_LEN]; |
| 762 | |
| 763 | /* |
| 764 | * If Linux/SCSI subsystem_api_t plugin got a VPD Unit Serial |
| 765 | * from the struct scsi_device level firmware, do not allow |
| 766 | * VPD Unit Serial to be emulated. |
| 767 | * |
| 768 | * Note this struct scsi_device could also be emulating VPD |
| 769 | * information from its drivers/scsi LLD. But for now we assume |
| 770 | * it is doing 'the right thing' wrt a world wide unique |
| 771 | * VPD Unit Serial Number that OS dependent multipath can depend on. |
| 772 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 773 | if (dev->dev_flags & DF_FIRMWARE_VPD_UNIT_SERIAL) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 774 | pr_err("Underlying SCSI device firmware provided VPD" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 775 | " Unit Serial, ignoring request\n"); |
| 776 | return -EOPNOTSUPP; |
| 777 | } |
| 778 | |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 779 | if (strlen(page) >= INQUIRY_VPD_SERIAL_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 780 | pr_err("Emulated VPD Unit Serial exceeds" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 781 | " INQUIRY_VPD_SERIAL_LEN: %d\n", INQUIRY_VPD_SERIAL_LEN); |
| 782 | return -EOVERFLOW; |
| 783 | } |
| 784 | /* |
| 785 | * Check to see if any active $FABRIC_MOD exports exist. If they |
| 786 | * do exist, fail here as changing this information on the fly |
| 787 | * (underneath the initiator side OS dependent multipath code) |
| 788 | * could cause negative effects. |
| 789 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 790 | if (dev->export_count) { |
| 791 | pr_err("Unable to set VPD Unit Serial while" |
| 792 | " active %d $FABRIC_MOD exports exist\n", |
| 793 | dev->export_count); |
| 794 | return -EINVAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 795 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 796 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 797 | /* |
| 798 | * This currently assumes ASCII encoding for emulated VPD Unit Serial. |
| 799 | * |
| 800 | * Also, strip any newline added from the userspace |
| 801 | * echo $UUID > $TARGET/$HBA/$STORAGE_OBJECT/wwn/vpd_unit_serial |
| 802 | */ |
| 803 | memset(buf, 0, INQUIRY_VPD_SERIAL_LEN); |
| 804 | snprintf(buf, INQUIRY_VPD_SERIAL_LEN, "%s", page); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 805 | snprintf(dev->t10_wwn.unit_serial, INQUIRY_VPD_SERIAL_LEN, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 806 | "%s", strstrip(buf)); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 807 | dev->dev_flags |= DF_EMULATED_VPD_UNIT_SERIAL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 808 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 809 | pr_debug("Target_Core_ConfigFS: Set emulated VPD Unit Serial:" |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 810 | " %s\n", dev->t10_wwn.unit_serial); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 811 | |
| 812 | return count; |
| 813 | } |
| 814 | |
| 815 | SE_DEV_WWN_ATTR(vpd_unit_serial, S_IRUGO | S_IWUSR); |
| 816 | |
| 817 | /* |
| 818 | * VPD page 0x83 Protocol Identifier |
| 819 | */ |
| 820 | static ssize_t target_core_dev_wwn_show_attr_vpd_protocol_identifier( |
| 821 | struct t10_wwn *t10_wwn, |
| 822 | char *page) |
| 823 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 824 | struct t10_vpd *vpd; |
| 825 | unsigned char buf[VPD_TMP_BUF_SIZE]; |
| 826 | ssize_t len = 0; |
| 827 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 828 | memset(buf, 0, VPD_TMP_BUF_SIZE); |
| 829 | |
| 830 | spin_lock(&t10_wwn->t10_vpd_lock); |
| 831 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 832 | if (!vpd->protocol_identifier_set) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 833 | continue; |
| 834 | |
| 835 | transport_dump_vpd_proto_id(vpd, buf, VPD_TMP_BUF_SIZE); |
| 836 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 837 | if (len + strlen(buf) >= PAGE_SIZE) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 838 | break; |
| 839 | |
| 840 | len += sprintf(page+len, "%s", buf); |
| 841 | } |
| 842 | spin_unlock(&t10_wwn->t10_vpd_lock); |
| 843 | |
| 844 | return len; |
| 845 | } |
| 846 | |
| 847 | static ssize_t target_core_dev_wwn_store_attr_vpd_protocol_identifier( |
| 848 | struct t10_wwn *t10_wwn, |
| 849 | const char *page, |
| 850 | size_t count) |
| 851 | { |
| 852 | return -ENOSYS; |
| 853 | } |
| 854 | |
| 855 | SE_DEV_WWN_ATTR(vpd_protocol_identifier, S_IRUGO | S_IWUSR); |
| 856 | |
| 857 | /* |
| 858 | * Generic wrapper for dumping VPD identifiers by association. |
| 859 | */ |
| 860 | #define DEF_DEV_WWN_ASSOC_SHOW(_name, _assoc) \ |
| 861 | static ssize_t target_core_dev_wwn_show_attr_##_name( \ |
| 862 | struct t10_wwn *t10_wwn, \ |
| 863 | char *page) \ |
| 864 | { \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 865 | struct t10_vpd *vpd; \ |
| 866 | unsigned char buf[VPD_TMP_BUF_SIZE]; \ |
| 867 | ssize_t len = 0; \ |
| 868 | \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 869 | spin_lock(&t10_wwn->t10_vpd_lock); \ |
| 870 | list_for_each_entry(vpd, &t10_wwn->t10_vpd_list, vpd_list) { \ |
| 871 | if (vpd->association != _assoc) \ |
| 872 | continue; \ |
| 873 | \ |
| 874 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ |
| 875 | transport_dump_vpd_assoc(vpd, buf, VPD_TMP_BUF_SIZE); \ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 876 | if (len + strlen(buf) >= PAGE_SIZE) \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 877 | break; \ |
| 878 | len += sprintf(page+len, "%s", buf); \ |
| 879 | \ |
| 880 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ |
| 881 | transport_dump_vpd_ident_type(vpd, buf, VPD_TMP_BUF_SIZE); \ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 882 | if (len + strlen(buf) >= PAGE_SIZE) \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 883 | break; \ |
| 884 | len += sprintf(page+len, "%s", buf); \ |
| 885 | \ |
| 886 | memset(buf, 0, VPD_TMP_BUF_SIZE); \ |
| 887 | transport_dump_vpd_ident(vpd, buf, VPD_TMP_BUF_SIZE); \ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 888 | if (len + strlen(buf) >= PAGE_SIZE) \ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 889 | break; \ |
| 890 | len += sprintf(page+len, "%s", buf); \ |
| 891 | } \ |
| 892 | spin_unlock(&t10_wwn->t10_vpd_lock); \ |
| 893 | \ |
| 894 | return len; \ |
| 895 | } |
| 896 | |
| 897 | /* |
Andy Shevchenko | 163cd5f | 2011-07-18 22:17:43 -0700 | [diff] [blame] | 898 | * VPD page 0x83 Association: Logical Unit |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 899 | */ |
| 900 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_logical_unit, 0x00); |
| 901 | |
| 902 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_logical_unit( |
| 903 | struct t10_wwn *t10_wwn, |
| 904 | const char *page, |
| 905 | size_t count) |
| 906 | { |
| 907 | return -ENOSYS; |
| 908 | } |
| 909 | |
| 910 | SE_DEV_WWN_ATTR(vpd_assoc_logical_unit, S_IRUGO | S_IWUSR); |
| 911 | |
| 912 | /* |
| 913 | * VPD page 0x83 Association: Target Port |
| 914 | */ |
| 915 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_target_port, 0x10); |
| 916 | |
| 917 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_target_port( |
| 918 | struct t10_wwn *t10_wwn, |
| 919 | const char *page, |
| 920 | size_t count) |
| 921 | { |
| 922 | return -ENOSYS; |
| 923 | } |
| 924 | |
| 925 | SE_DEV_WWN_ATTR(vpd_assoc_target_port, S_IRUGO | S_IWUSR); |
| 926 | |
| 927 | /* |
| 928 | * VPD page 0x83 Association: SCSI Target Device |
| 929 | */ |
| 930 | DEF_DEV_WWN_ASSOC_SHOW(vpd_assoc_scsi_target_device, 0x20); |
| 931 | |
| 932 | static ssize_t target_core_dev_wwn_store_attr_vpd_assoc_scsi_target_device( |
| 933 | struct t10_wwn *t10_wwn, |
| 934 | const char *page, |
| 935 | size_t count) |
| 936 | { |
| 937 | return -ENOSYS; |
| 938 | } |
| 939 | |
| 940 | SE_DEV_WWN_ATTR(vpd_assoc_scsi_target_device, S_IRUGO | S_IWUSR); |
| 941 | |
| 942 | CONFIGFS_EATTR_OPS(target_core_dev_wwn, t10_wwn, t10_wwn_group); |
| 943 | |
| 944 | static struct configfs_attribute *target_core_dev_wwn_attrs[] = { |
| 945 | &target_core_dev_wwn_vpd_unit_serial.attr, |
| 946 | &target_core_dev_wwn_vpd_protocol_identifier.attr, |
| 947 | &target_core_dev_wwn_vpd_assoc_logical_unit.attr, |
| 948 | &target_core_dev_wwn_vpd_assoc_target_port.attr, |
| 949 | &target_core_dev_wwn_vpd_assoc_scsi_target_device.attr, |
| 950 | NULL, |
| 951 | }; |
| 952 | |
| 953 | static struct configfs_item_operations target_core_dev_wwn_ops = { |
| 954 | .show_attribute = target_core_dev_wwn_attr_show, |
| 955 | .store_attribute = target_core_dev_wwn_attr_store, |
| 956 | }; |
| 957 | |
| 958 | static struct config_item_type target_core_dev_wwn_cit = { |
| 959 | .ct_item_ops = &target_core_dev_wwn_ops, |
| 960 | .ct_attrs = target_core_dev_wwn_attrs, |
| 961 | .ct_owner = THIS_MODULE, |
| 962 | }; |
| 963 | |
| 964 | /* End functions for struct config_item_type target_core_dev_wwn_cit */ |
| 965 | |
| 966 | /* Start functions for struct config_item_type target_core_dev_pr_cit */ |
| 967 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 968 | CONFIGFS_EATTR_STRUCT(target_core_dev_pr, se_device); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 969 | #define SE_DEV_PR_ATTR(_name, _mode) \ |
| 970 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ |
| 971 | __CONFIGFS_EATTR(_name, _mode, \ |
| 972 | target_core_dev_pr_show_attr_##_name, \ |
| 973 | target_core_dev_pr_store_attr_##_name); |
| 974 | |
| 975 | #define SE_DEV_PR_ATTR_RO(_name); \ |
| 976 | static struct target_core_dev_pr_attribute target_core_dev_pr_##_name = \ |
| 977 | __CONFIGFS_EATTR_RO(_name, \ |
| 978 | target_core_dev_pr_show_attr_##_name); |
| 979 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 980 | static ssize_t target_core_dev_pr_show_spc3_res(struct se_device *dev, |
| 981 | char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 982 | { |
| 983 | struct se_node_acl *se_nacl; |
| 984 | struct t10_pr_registration *pr_reg; |
| 985 | char i_buf[PR_REG_ISID_ID_LEN]; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 986 | |
| 987 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); |
| 988 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 989 | pr_reg = dev->dev_pr_res_holder; |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 990 | if (!pr_reg) |
| 991 | return sprintf(page, "No SPC-3 Reservation holder\n"); |
| 992 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 993 | se_nacl = pr_reg->pr_reg_nacl; |
Andy Grover | d2843c1 | 2013-05-16 10:40:55 -0700 | [diff] [blame] | 994 | core_pr_dump_initiator_port(pr_reg, i_buf, PR_REG_ISID_ID_LEN); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 995 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 996 | return sprintf(page, "SPC-3 Reservation: %s Initiator: %s%s\n", |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 997 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
Andy Grover | d2843c1 | 2013-05-16 10:40:55 -0700 | [diff] [blame] | 998 | se_nacl->initiatorname, i_buf); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 999 | } |
| 1000 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1001 | static ssize_t target_core_dev_pr_show_spc2_res(struct se_device *dev, |
| 1002 | char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1003 | { |
| 1004 | struct se_node_acl *se_nacl; |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1005 | ssize_t len; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1006 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1007 | se_nacl = dev->dev_reserved_node_acl; |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1008 | if (se_nacl) { |
| 1009 | len = sprintf(page, |
| 1010 | "SPC-2 Reservation: %s Initiator: %s\n", |
| 1011 | se_nacl->se_tpg->se_tpg_tfo->get_fabric_name(), |
| 1012 | se_nacl->initiatorname); |
| 1013 | } else { |
| 1014 | len = sprintf(page, "No SPC-2 Reservation holder\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1015 | } |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1016 | return len; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1017 | } |
| 1018 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1019 | static ssize_t target_core_dev_pr_show_attr_res_holder(struct se_device *dev, |
| 1020 | char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1021 | { |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1022 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1023 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1024 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
| 1025 | return sprintf(page, "Passthrough\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1026 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1027 | spin_lock(&dev->dev_reservation_lock); |
| 1028 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
| 1029 | ret = target_core_dev_pr_show_spc2_res(dev, page); |
| 1030 | else |
| 1031 | ret = target_core_dev_pr_show_spc3_res(dev, page); |
| 1032 | spin_unlock(&dev->dev_reservation_lock); |
| 1033 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1034 | } |
| 1035 | |
| 1036 | SE_DEV_PR_ATTR_RO(res_holder); |
| 1037 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1038 | static ssize_t target_core_dev_pr_show_attr_res_pr_all_tgt_pts( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1039 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1040 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1041 | ssize_t len = 0; |
| 1042 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1043 | spin_lock(&dev->dev_reservation_lock); |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1044 | if (!dev->dev_pr_res_holder) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1045 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1046 | } else if (dev->dev_pr_res_holder->pr_reg_all_tg_pt) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1047 | len = sprintf(page, "SPC-3 Reservation: All Target" |
| 1048 | " Ports registration\n"); |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1049 | } else { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1050 | len = sprintf(page, "SPC-3 Reservation: Single" |
| 1051 | " Target Port registration\n"); |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1052 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1053 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1054 | spin_unlock(&dev->dev_reservation_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1055 | return len; |
| 1056 | } |
| 1057 | |
| 1058 | SE_DEV_PR_ATTR_RO(res_pr_all_tgt_pts); |
| 1059 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1060 | static ssize_t target_core_dev_pr_show_attr_res_pr_generation( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1061 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1062 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1063 | return sprintf(page, "0x%08x\n", dev->t10_pr.pr_generation); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1064 | } |
| 1065 | |
| 1066 | SE_DEV_PR_ATTR_RO(res_pr_generation); |
| 1067 | |
| 1068 | /* |
| 1069 | * res_pr_holder_tg_port |
| 1070 | */ |
| 1071 | static ssize_t target_core_dev_pr_show_attr_res_pr_holder_tg_port( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1072 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1073 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1074 | struct se_node_acl *se_nacl; |
| 1075 | struct se_lun *lun; |
| 1076 | struct se_portal_group *se_tpg; |
| 1077 | struct t10_pr_registration *pr_reg; |
| 1078 | struct target_core_fabric_ops *tfo; |
| 1079 | ssize_t len = 0; |
| 1080 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1081 | spin_lock(&dev->dev_reservation_lock); |
| 1082 | pr_reg = dev->dev_pr_res_holder; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1083 | if (!pr_reg) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1084 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1085 | goto out_unlock; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1086 | } |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1087 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1088 | se_nacl = pr_reg->pr_reg_nacl; |
| 1089 | se_tpg = se_nacl->se_tpg; |
| 1090 | lun = pr_reg->pr_reg_tg_pt_lun; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 1091 | tfo = se_tpg->se_tpg_tfo; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1092 | |
| 1093 | len += sprintf(page+len, "SPC-3 Reservation: %s" |
| 1094 | " Target Node Endpoint: %s\n", tfo->get_fabric_name(), |
| 1095 | tfo->tpg_get_wwn(se_tpg)); |
| 1096 | len += sprintf(page+len, "SPC-3 Reservation: Relative Port" |
Masanari Iida | 35d1efe | 2012-08-16 22:43:13 +0900 | [diff] [blame] | 1097 | " Identifier Tag: %hu %s Portal Group Tag: %hu" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1098 | " %s Logical Unit: %u\n", lun->lun_sep->sep_rtpi, |
| 1099 | tfo->get_fabric_name(), tfo->tpg_get_tag(se_tpg), |
| 1100 | tfo->get_fabric_name(), lun->unpacked_lun); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1101 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1102 | out_unlock: |
| 1103 | spin_unlock(&dev->dev_reservation_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1104 | return len; |
| 1105 | } |
| 1106 | |
| 1107 | SE_DEV_PR_ATTR_RO(res_pr_holder_tg_port); |
| 1108 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1109 | static ssize_t target_core_dev_pr_show_attr_res_pr_registered_i_pts( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1110 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1111 | { |
| 1112 | struct target_core_fabric_ops *tfo; |
| 1113 | struct t10_pr_registration *pr_reg; |
| 1114 | unsigned char buf[384]; |
| 1115 | char i_buf[PR_REG_ISID_ID_LEN]; |
| 1116 | ssize_t len = 0; |
Andy Grover | d2843c1 | 2013-05-16 10:40:55 -0700 | [diff] [blame] | 1117 | int reg_count = 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1118 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1119 | len += sprintf(page+len, "SPC-3 PR Registrations:\n"); |
| 1120 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1121 | spin_lock(&dev->t10_pr.registration_lock); |
| 1122 | list_for_each_entry(pr_reg, &dev->t10_pr.registration_list, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1123 | pr_reg_list) { |
| 1124 | |
| 1125 | memset(buf, 0, 384); |
| 1126 | memset(i_buf, 0, PR_REG_ISID_ID_LEN); |
| 1127 | tfo = pr_reg->pr_reg_nacl->se_tpg->se_tpg_tfo; |
Andy Grover | d2843c1 | 2013-05-16 10:40:55 -0700 | [diff] [blame] | 1128 | core_pr_dump_initiator_port(pr_reg, i_buf, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1129 | PR_REG_ISID_ID_LEN); |
| 1130 | sprintf(buf, "%s Node: %s%s Key: 0x%016Lx PRgen: 0x%08x\n", |
| 1131 | tfo->get_fabric_name(), |
Andy Grover | d2843c1 | 2013-05-16 10:40:55 -0700 | [diff] [blame] | 1132 | pr_reg->pr_reg_nacl->initiatorname, i_buf, pr_reg->pr_res_key, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1133 | pr_reg->pr_res_generation); |
| 1134 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1135 | if (len + strlen(buf) >= PAGE_SIZE) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1136 | break; |
| 1137 | |
| 1138 | len += sprintf(page+len, "%s", buf); |
| 1139 | reg_count++; |
| 1140 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1141 | spin_unlock(&dev->t10_pr.registration_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1142 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1143 | if (!reg_count) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1144 | len += sprintf(page+len, "None\n"); |
| 1145 | |
| 1146 | return len; |
| 1147 | } |
| 1148 | |
| 1149 | SE_DEV_PR_ATTR_RO(res_pr_registered_i_pts); |
| 1150 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1151 | static ssize_t target_core_dev_pr_show_attr_res_pr_type( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1152 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1153 | { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1154 | struct t10_pr_registration *pr_reg; |
| 1155 | ssize_t len = 0; |
| 1156 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1157 | spin_lock(&dev->dev_reservation_lock); |
| 1158 | pr_reg = dev->dev_pr_res_holder; |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1159 | if (pr_reg) { |
| 1160 | len = sprintf(page, "SPC-3 Reservation Type: %s\n", |
| 1161 | core_scsi3_pr_dump_type(pr_reg->pr_res_type)); |
| 1162 | } else { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1163 | len = sprintf(page, "No SPC-3 Reservation holder\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1164 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1165 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1166 | spin_unlock(&dev->dev_reservation_lock); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1167 | return len; |
| 1168 | } |
| 1169 | |
| 1170 | SE_DEV_PR_ATTR_RO(res_pr_type); |
| 1171 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1172 | static ssize_t target_core_dev_pr_show_attr_res_type( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1173 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1174 | { |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1175 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
| 1176 | return sprintf(page, "SPC_PASSTHROUGH\n"); |
| 1177 | else if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
| 1178 | return sprintf(page, "SPC2_RESERVATIONS\n"); |
| 1179 | else |
| 1180 | return sprintf(page, "SPC3_PERSISTENT_RESERVATIONS\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1181 | } |
| 1182 | |
| 1183 | SE_DEV_PR_ATTR_RO(res_type); |
| 1184 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1185 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_active( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1186 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1187 | { |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1188 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1189 | return 0; |
| 1190 | |
| 1191 | return sprintf(page, "APTPL Bit Status: %s\n", |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1192 | (dev->t10_pr.pr_aptpl_active) ? "Activated" : "Disabled"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1193 | } |
| 1194 | |
| 1195 | SE_DEV_PR_ATTR_RO(res_aptpl_active); |
| 1196 | |
| 1197 | /* |
| 1198 | * res_aptpl_metadata |
| 1199 | */ |
| 1200 | static ssize_t target_core_dev_pr_show_attr_res_aptpl_metadata( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1201 | struct se_device *dev, char *page) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1202 | { |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1203 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1204 | return 0; |
| 1205 | |
| 1206 | return sprintf(page, "Ready to process PR APTPL metadata..\n"); |
| 1207 | } |
| 1208 | |
| 1209 | enum { |
| 1210 | Opt_initiator_fabric, Opt_initiator_node, Opt_initiator_sid, |
| 1211 | Opt_sa_res_key, Opt_res_holder, Opt_res_type, Opt_res_scope, |
| 1212 | Opt_res_all_tg_pt, Opt_mapped_lun, Opt_target_fabric, |
| 1213 | Opt_target_node, Opt_tpgt, Opt_port_rtpi, Opt_target_lun, Opt_err |
| 1214 | }; |
| 1215 | |
| 1216 | static match_table_t tokens = { |
| 1217 | {Opt_initiator_fabric, "initiator_fabric=%s"}, |
| 1218 | {Opt_initiator_node, "initiator_node=%s"}, |
| 1219 | {Opt_initiator_sid, "initiator_sid=%s"}, |
| 1220 | {Opt_sa_res_key, "sa_res_key=%s"}, |
| 1221 | {Opt_res_holder, "res_holder=%d"}, |
| 1222 | {Opt_res_type, "res_type=%d"}, |
| 1223 | {Opt_res_scope, "res_scope=%d"}, |
| 1224 | {Opt_res_all_tg_pt, "res_all_tg_pt=%d"}, |
| 1225 | {Opt_mapped_lun, "mapped_lun=%d"}, |
| 1226 | {Opt_target_fabric, "target_fabric=%s"}, |
| 1227 | {Opt_target_node, "target_node=%s"}, |
| 1228 | {Opt_tpgt, "tpgt=%d"}, |
| 1229 | {Opt_port_rtpi, "port_rtpi=%d"}, |
| 1230 | {Opt_target_lun, "target_lun=%d"}, |
| 1231 | {Opt_err, NULL} |
| 1232 | }; |
| 1233 | |
| 1234 | static ssize_t target_core_dev_pr_store_attr_res_aptpl_metadata( |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1235 | struct se_device *dev, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1236 | const char *page, |
| 1237 | size_t count) |
| 1238 | { |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1239 | unsigned char *i_fabric = NULL, *i_port = NULL, *isid = NULL; |
| 1240 | unsigned char *t_fabric = NULL, *t_port = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1241 | char *orig, *ptr, *arg_p, *opts; |
| 1242 | substring_t args[MAX_OPT_ARGS]; |
| 1243 | unsigned long long tmp_ll; |
| 1244 | u64 sa_res_key = 0; |
| 1245 | u32 mapped_lun = 0, target_lun = 0; |
| 1246 | int ret = -1, res_holder = 0, all_tg_pt = 0, arg, token; |
| 1247 | u16 port_rpti = 0, tpgt = 0; |
| 1248 | u8 type = 0, scope; |
| 1249 | |
Christoph Hellwig | d977f43 | 2012-10-10 17:37:15 -0400 | [diff] [blame] | 1250 | if (dev->transport->transport_type == TRANSPORT_PLUGIN_PHBA_PDEV) |
| 1251 | return 0; |
| 1252 | if (dev->dev_reservation_flags & DRF_SPC2_RESERVATIONS) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1253 | return 0; |
| 1254 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1255 | if (dev->export_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1256 | pr_debug("Unable to process APTPL metadata while" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1257 | " active fabric exports exist\n"); |
| 1258 | return -EINVAL; |
| 1259 | } |
| 1260 | |
| 1261 | opts = kstrdup(page, GFP_KERNEL); |
| 1262 | if (!opts) |
| 1263 | return -ENOMEM; |
| 1264 | |
| 1265 | orig = opts; |
Sebastian Andrzej Siewior | 90c161b | 2011-11-23 20:53:17 +0100 | [diff] [blame] | 1266 | while ((ptr = strsep(&opts, ",\n")) != NULL) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1267 | if (!*ptr) |
| 1268 | continue; |
| 1269 | |
| 1270 | token = match_token(ptr, tokens, args); |
| 1271 | switch (token) { |
| 1272 | case Opt_initiator_fabric: |
| 1273 | i_fabric = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1274 | if (!i_fabric) { |
| 1275 | ret = -ENOMEM; |
| 1276 | goto out; |
| 1277 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1278 | break; |
| 1279 | case Opt_initiator_node: |
| 1280 | i_port = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1281 | if (!i_port) { |
| 1282 | ret = -ENOMEM; |
| 1283 | goto out; |
| 1284 | } |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1285 | if (strlen(i_port) >= PR_APTPL_MAX_IPORT_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1286 | pr_err("APTPL metadata initiator_node=" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1287 | " exceeds PR_APTPL_MAX_IPORT_LEN: %d\n", |
| 1288 | PR_APTPL_MAX_IPORT_LEN); |
| 1289 | ret = -EINVAL; |
| 1290 | break; |
| 1291 | } |
| 1292 | break; |
| 1293 | case Opt_initiator_sid: |
| 1294 | isid = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1295 | if (!isid) { |
| 1296 | ret = -ENOMEM; |
| 1297 | goto out; |
| 1298 | } |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1299 | if (strlen(isid) >= PR_REG_ISID_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1300 | pr_err("APTPL metadata initiator_isid" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1301 | "= exceeds PR_REG_ISID_LEN: %d\n", |
| 1302 | PR_REG_ISID_LEN); |
| 1303 | ret = -EINVAL; |
| 1304 | break; |
| 1305 | } |
| 1306 | break; |
| 1307 | case Opt_sa_res_key: |
| 1308 | arg_p = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1309 | if (!arg_p) { |
| 1310 | ret = -ENOMEM; |
| 1311 | goto out; |
| 1312 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1313 | ret = strict_strtoull(arg_p, 0, &tmp_ll); |
| 1314 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1315 | pr_err("strict_strtoull() failed for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1316 | " sa_res_key=\n"); |
| 1317 | goto out; |
| 1318 | } |
| 1319 | sa_res_key = (u64)tmp_ll; |
| 1320 | break; |
| 1321 | /* |
| 1322 | * PR APTPL Metadata for Reservation |
| 1323 | */ |
| 1324 | case Opt_res_holder: |
| 1325 | match_int(args, &arg); |
| 1326 | res_holder = arg; |
| 1327 | break; |
| 1328 | case Opt_res_type: |
| 1329 | match_int(args, &arg); |
| 1330 | type = (u8)arg; |
| 1331 | break; |
| 1332 | case Opt_res_scope: |
| 1333 | match_int(args, &arg); |
| 1334 | scope = (u8)arg; |
| 1335 | break; |
| 1336 | case Opt_res_all_tg_pt: |
| 1337 | match_int(args, &arg); |
| 1338 | all_tg_pt = (int)arg; |
| 1339 | break; |
| 1340 | case Opt_mapped_lun: |
| 1341 | match_int(args, &arg); |
| 1342 | mapped_lun = (u32)arg; |
| 1343 | break; |
| 1344 | /* |
| 1345 | * PR APTPL Metadata for Target Port |
| 1346 | */ |
| 1347 | case Opt_target_fabric: |
| 1348 | t_fabric = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1349 | if (!t_fabric) { |
| 1350 | ret = -ENOMEM; |
| 1351 | goto out; |
| 1352 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1353 | break; |
| 1354 | case Opt_target_node: |
| 1355 | t_port = match_strdup(&args[0]); |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1356 | if (!t_port) { |
| 1357 | ret = -ENOMEM; |
| 1358 | goto out; |
| 1359 | } |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 1360 | if (strlen(t_port) >= PR_APTPL_MAX_TPORT_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1361 | pr_err("APTPL metadata target_node=" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1362 | " exceeds PR_APTPL_MAX_TPORT_LEN: %d\n", |
| 1363 | PR_APTPL_MAX_TPORT_LEN); |
| 1364 | ret = -EINVAL; |
| 1365 | break; |
| 1366 | } |
| 1367 | break; |
| 1368 | case Opt_tpgt: |
| 1369 | match_int(args, &arg); |
| 1370 | tpgt = (u16)arg; |
| 1371 | break; |
| 1372 | case Opt_port_rtpi: |
| 1373 | match_int(args, &arg); |
| 1374 | port_rpti = (u16)arg; |
| 1375 | break; |
| 1376 | case Opt_target_lun: |
| 1377 | match_int(args, &arg); |
| 1378 | target_lun = (u32)arg; |
| 1379 | break; |
| 1380 | default: |
| 1381 | break; |
| 1382 | } |
| 1383 | } |
| 1384 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1385 | if (!i_port || !t_port || !sa_res_key) { |
| 1386 | pr_err("Illegal parameters for APTPL registration\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1387 | ret = -EINVAL; |
| 1388 | goto out; |
| 1389 | } |
| 1390 | |
| 1391 | if (res_holder && !(type)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1392 | pr_err("Illegal PR type: 0x%02x for reservation" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1393 | " holder\n", type); |
| 1394 | ret = -EINVAL; |
| 1395 | goto out; |
| 1396 | } |
| 1397 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1398 | ret = core_scsi3_alloc_aptpl_registration(&dev->t10_pr, sa_res_key, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1399 | i_port, isid, mapped_lun, t_port, tpgt, target_lun, |
| 1400 | res_holder, all_tg_pt, type); |
| 1401 | out: |
Jesper Juhl | 6d18025 | 2011-03-14 04:05:56 -0700 | [diff] [blame] | 1402 | kfree(i_fabric); |
| 1403 | kfree(i_port); |
| 1404 | kfree(isid); |
| 1405 | kfree(t_fabric); |
| 1406 | kfree(t_port); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1407 | kfree(orig); |
| 1408 | return (ret == 0) ? count : ret; |
| 1409 | } |
| 1410 | |
| 1411 | SE_DEV_PR_ATTR(res_aptpl_metadata, S_IRUGO | S_IWUSR); |
| 1412 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1413 | CONFIGFS_EATTR_OPS(target_core_dev_pr, se_device, dev_pr_group); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1414 | |
| 1415 | static struct configfs_attribute *target_core_dev_pr_attrs[] = { |
| 1416 | &target_core_dev_pr_res_holder.attr, |
| 1417 | &target_core_dev_pr_res_pr_all_tgt_pts.attr, |
| 1418 | &target_core_dev_pr_res_pr_generation.attr, |
| 1419 | &target_core_dev_pr_res_pr_holder_tg_port.attr, |
| 1420 | &target_core_dev_pr_res_pr_registered_i_pts.attr, |
| 1421 | &target_core_dev_pr_res_pr_type.attr, |
| 1422 | &target_core_dev_pr_res_type.attr, |
| 1423 | &target_core_dev_pr_res_aptpl_active.attr, |
| 1424 | &target_core_dev_pr_res_aptpl_metadata.attr, |
| 1425 | NULL, |
| 1426 | }; |
| 1427 | |
| 1428 | static struct configfs_item_operations target_core_dev_pr_ops = { |
| 1429 | .show_attribute = target_core_dev_pr_attr_show, |
| 1430 | .store_attribute = target_core_dev_pr_attr_store, |
| 1431 | }; |
| 1432 | |
| 1433 | static struct config_item_type target_core_dev_pr_cit = { |
| 1434 | .ct_item_ops = &target_core_dev_pr_ops, |
| 1435 | .ct_attrs = target_core_dev_pr_attrs, |
| 1436 | .ct_owner = THIS_MODULE, |
| 1437 | }; |
| 1438 | |
| 1439 | /* End functions for struct config_item_type target_core_dev_pr_cit */ |
| 1440 | |
| 1441 | /* Start functions for struct config_item_type target_core_dev_cit */ |
| 1442 | |
| 1443 | static ssize_t target_core_show_dev_info(void *p, char *page) |
| 1444 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1445 | struct se_device *dev = p; |
| 1446 | struct se_subsystem_api *t = dev->transport; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1447 | int bl = 0; |
| 1448 | ssize_t read_bytes = 0; |
| 1449 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1450 | transport_dump_dev_state(dev, page, &bl); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1451 | read_bytes += bl; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1452 | read_bytes += t->show_configfs_dev_params(dev, page+read_bytes); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1453 | return read_bytes; |
| 1454 | } |
| 1455 | |
| 1456 | static struct target_core_configfs_attribute target_core_attr_dev_info = { |
| 1457 | .attr = { .ca_owner = THIS_MODULE, |
| 1458 | .ca_name = "info", |
| 1459 | .ca_mode = S_IRUGO }, |
| 1460 | .show = target_core_show_dev_info, |
| 1461 | .store = NULL, |
| 1462 | }; |
| 1463 | |
| 1464 | static ssize_t target_core_store_dev_control( |
| 1465 | void *p, |
| 1466 | const char *page, |
| 1467 | size_t count) |
| 1468 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1469 | struct se_device *dev = p; |
| 1470 | struct se_subsystem_api *t = dev->transport; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1471 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1472 | return t->set_configfs_dev_params(dev, page, count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1473 | } |
| 1474 | |
| 1475 | static struct target_core_configfs_attribute target_core_attr_dev_control = { |
| 1476 | .attr = { .ca_owner = THIS_MODULE, |
| 1477 | .ca_name = "control", |
| 1478 | .ca_mode = S_IWUSR }, |
| 1479 | .show = NULL, |
| 1480 | .store = target_core_store_dev_control, |
| 1481 | }; |
| 1482 | |
| 1483 | static ssize_t target_core_show_dev_alias(void *p, char *page) |
| 1484 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1485 | struct se_device *dev = p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1486 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1487 | if (!(dev->dev_flags & DF_USING_ALIAS)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1488 | return 0; |
| 1489 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1490 | return snprintf(page, PAGE_SIZE, "%s\n", dev->dev_alias); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1491 | } |
| 1492 | |
| 1493 | static ssize_t target_core_store_dev_alias( |
| 1494 | void *p, |
| 1495 | const char *page, |
| 1496 | size_t count) |
| 1497 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1498 | struct se_device *dev = p; |
| 1499 | struct se_hba *hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1500 | ssize_t read_bytes; |
| 1501 | |
| 1502 | if (count > (SE_DEV_ALIAS_LEN-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1503 | pr_err("alias count: %d exceeds" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1504 | " SE_DEV_ALIAS_LEN-1: %u\n", (int)count, |
| 1505 | SE_DEV_ALIAS_LEN-1); |
| 1506 | return -EINVAL; |
| 1507 | } |
| 1508 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1509 | read_bytes = snprintf(&dev->dev_alias[0], SE_DEV_ALIAS_LEN, "%s", page); |
Dan Carpenter | 3011684 | 2012-01-27 15:50:55 +0300 | [diff] [blame] | 1510 | if (!read_bytes) |
| 1511 | return -EINVAL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1512 | if (dev->dev_alias[read_bytes - 1] == '\n') |
| 1513 | dev->dev_alias[read_bytes - 1] = '\0'; |
Sebastian Andrzej Siewior | 0877eafd | 2011-11-28 13:57:25 +0100 | [diff] [blame] | 1514 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1515 | dev->dev_flags |= DF_USING_ALIAS; |
Dan Carpenter | 3011684 | 2012-01-27 15:50:55 +0300 | [diff] [blame] | 1516 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1517 | pr_debug("Target_Core_ConfigFS: %s/%s set alias: %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1518 | config_item_name(&hba->hba_group.cg_item), |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1519 | config_item_name(&dev->dev_group.cg_item), |
| 1520 | dev->dev_alias); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1521 | |
| 1522 | return read_bytes; |
| 1523 | } |
| 1524 | |
| 1525 | static struct target_core_configfs_attribute target_core_attr_dev_alias = { |
| 1526 | .attr = { .ca_owner = THIS_MODULE, |
| 1527 | .ca_name = "alias", |
| 1528 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 1529 | .show = target_core_show_dev_alias, |
| 1530 | .store = target_core_store_dev_alias, |
| 1531 | }; |
| 1532 | |
| 1533 | static ssize_t target_core_show_dev_udev_path(void *p, char *page) |
| 1534 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1535 | struct se_device *dev = p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1536 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1537 | if (!(dev->dev_flags & DF_USING_UDEV_PATH)) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1538 | return 0; |
| 1539 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1540 | return snprintf(page, PAGE_SIZE, "%s\n", dev->udev_path); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1541 | } |
| 1542 | |
| 1543 | static ssize_t target_core_store_dev_udev_path( |
| 1544 | void *p, |
| 1545 | const char *page, |
| 1546 | size_t count) |
| 1547 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1548 | struct se_device *dev = p; |
| 1549 | struct se_hba *hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1550 | ssize_t read_bytes; |
| 1551 | |
| 1552 | if (count > (SE_UDEV_PATH_LEN-1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1553 | pr_err("udev_path count: %d exceeds" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1554 | " SE_UDEV_PATH_LEN-1: %u\n", (int)count, |
| 1555 | SE_UDEV_PATH_LEN-1); |
| 1556 | return -EINVAL; |
| 1557 | } |
| 1558 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1559 | read_bytes = snprintf(&dev->udev_path[0], SE_UDEV_PATH_LEN, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1560 | "%s", page); |
Dan Carpenter | 3011684 | 2012-01-27 15:50:55 +0300 | [diff] [blame] | 1561 | if (!read_bytes) |
| 1562 | return -EINVAL; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1563 | if (dev->udev_path[read_bytes - 1] == '\n') |
| 1564 | dev->udev_path[read_bytes - 1] = '\0'; |
Sebastian Andrzej Siewior | 0877eafd | 2011-11-28 13:57:25 +0100 | [diff] [blame] | 1565 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1566 | dev->dev_flags |= DF_USING_UDEV_PATH; |
Dan Carpenter | 3011684 | 2012-01-27 15:50:55 +0300 | [diff] [blame] | 1567 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1568 | pr_debug("Target_Core_ConfigFS: %s/%s set udev_path: %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1569 | config_item_name(&hba->hba_group.cg_item), |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1570 | config_item_name(&dev->dev_group.cg_item), |
| 1571 | dev->udev_path); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1572 | |
| 1573 | return read_bytes; |
| 1574 | } |
| 1575 | |
| 1576 | static struct target_core_configfs_attribute target_core_attr_dev_udev_path = { |
| 1577 | .attr = { .ca_owner = THIS_MODULE, |
| 1578 | .ca_name = "udev_path", |
| 1579 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 1580 | .show = target_core_show_dev_udev_path, |
| 1581 | .store = target_core_store_dev_udev_path, |
| 1582 | }; |
| 1583 | |
Andy Grover | 64146db | 2013-04-30 11:59:15 -0700 | [diff] [blame] | 1584 | static ssize_t target_core_show_dev_enable(void *p, char *page) |
| 1585 | { |
| 1586 | struct se_device *dev = p; |
| 1587 | |
| 1588 | return snprintf(page, PAGE_SIZE, "%d\n", !!(dev->dev_flags & DF_CONFIGURED)); |
| 1589 | } |
| 1590 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1591 | static ssize_t target_core_store_dev_enable( |
| 1592 | void *p, |
| 1593 | const char *page, |
| 1594 | size_t count) |
| 1595 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1596 | struct se_device *dev = p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1597 | char *ptr; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1598 | int ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1599 | |
| 1600 | ptr = strstr(page, "1"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1601 | if (!ptr) { |
| 1602 | pr_err("For dev_enable ops, only valid value" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1603 | " is \"1\"\n"); |
| 1604 | return -EINVAL; |
| 1605 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1606 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1607 | ret = target_configure_device(dev); |
| 1608 | if (ret) |
| 1609 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1610 | return count; |
| 1611 | } |
| 1612 | |
| 1613 | static struct target_core_configfs_attribute target_core_attr_dev_enable = { |
| 1614 | .attr = { .ca_owner = THIS_MODULE, |
| 1615 | .ca_name = "enable", |
Andy Grover | 64146db | 2013-04-30 11:59:15 -0700 | [diff] [blame] | 1616 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 1617 | .show = target_core_show_dev_enable, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1618 | .store = target_core_store_dev_enable, |
| 1619 | }; |
| 1620 | |
| 1621 | static ssize_t target_core_show_alua_lu_gp(void *p, char *page) |
| 1622 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1623 | struct se_device *dev = p; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1624 | struct config_item *lu_ci; |
| 1625 | struct t10_alua_lu_gp *lu_gp; |
| 1626 | struct t10_alua_lu_gp_member *lu_gp_mem; |
| 1627 | ssize_t len = 0; |
| 1628 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1629 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
Christoph Hellwig | c87fbd5 | 2012-10-10 17:37:16 -0400 | [diff] [blame] | 1630 | if (!lu_gp_mem) |
| 1631 | return 0; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1632 | |
| 1633 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); |
| 1634 | lu_gp = lu_gp_mem->lu_gp; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1635 | if (lu_gp) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1636 | lu_ci = &lu_gp->lu_gp_group.cg_item; |
| 1637 | len += sprintf(page, "LU Group Alias: %s\nLU Group ID: %hu\n", |
| 1638 | config_item_name(lu_ci), lu_gp->lu_gp_id); |
| 1639 | } |
| 1640 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); |
| 1641 | |
| 1642 | return len; |
| 1643 | } |
| 1644 | |
| 1645 | static ssize_t target_core_store_alua_lu_gp( |
| 1646 | void *p, |
| 1647 | const char *page, |
| 1648 | size_t count) |
| 1649 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1650 | struct se_device *dev = p; |
| 1651 | struct se_hba *hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1652 | struct t10_alua_lu_gp *lu_gp = NULL, *lu_gp_new = NULL; |
| 1653 | struct t10_alua_lu_gp_member *lu_gp_mem; |
| 1654 | unsigned char buf[LU_GROUP_NAME_BUF]; |
| 1655 | int move = 0; |
| 1656 | |
Christoph Hellwig | c87fbd5 | 2012-10-10 17:37:16 -0400 | [diff] [blame] | 1657 | lu_gp_mem = dev->dev_alua_lu_gp_mem; |
| 1658 | if (!lu_gp_mem) |
| 1659 | return 0; |
| 1660 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1661 | if (count > LU_GROUP_NAME_BUF) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1662 | pr_err("ALUA LU Group Alias too large!\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1663 | return -EINVAL; |
| 1664 | } |
| 1665 | memset(buf, 0, LU_GROUP_NAME_BUF); |
| 1666 | memcpy(buf, page, count); |
| 1667 | /* |
| 1668 | * Any ALUA logical unit alias besides "NULL" means we will be |
| 1669 | * making a new group association. |
| 1670 | */ |
| 1671 | if (strcmp(strstrip(buf), "NULL")) { |
| 1672 | /* |
| 1673 | * core_alua_get_lu_gp_by_name() will increment reference to |
| 1674 | * struct t10_alua_lu_gp. This reference is released with |
| 1675 | * core_alua_get_lu_gp_by_name below(). |
| 1676 | */ |
| 1677 | lu_gp_new = core_alua_get_lu_gp_by_name(strstrip(buf)); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1678 | if (!lu_gp_new) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1679 | return -ENODEV; |
| 1680 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1681 | |
| 1682 | spin_lock(&lu_gp_mem->lu_gp_mem_lock); |
| 1683 | lu_gp = lu_gp_mem->lu_gp; |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1684 | if (lu_gp) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1685 | /* |
| 1686 | * Clearing an existing lu_gp association, and replacing |
| 1687 | * with NULL |
| 1688 | */ |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1689 | if (!lu_gp_new) { |
| 1690 | pr_debug("Target_Core_ConfigFS: Releasing %s/%s" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1691 | " from ALUA LU Group: core/alua/lu_gps/%s, ID:" |
| 1692 | " %hu\n", |
| 1693 | config_item_name(&hba->hba_group.cg_item), |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1694 | config_item_name(&dev->dev_group.cg_item), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1695 | config_item_name(&lu_gp->lu_gp_group.cg_item), |
| 1696 | lu_gp->lu_gp_id); |
| 1697 | |
| 1698 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); |
| 1699 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); |
| 1700 | |
| 1701 | return count; |
| 1702 | } |
| 1703 | /* |
| 1704 | * Removing existing association of lu_gp_mem with lu_gp |
| 1705 | */ |
| 1706 | __core_alua_drop_lu_gp_mem(lu_gp_mem, lu_gp); |
| 1707 | move = 1; |
| 1708 | } |
| 1709 | /* |
| 1710 | * Associate lu_gp_mem with lu_gp_new. |
| 1711 | */ |
| 1712 | __core_alua_attach_lu_gp_mem(lu_gp_mem, lu_gp_new); |
| 1713 | spin_unlock(&lu_gp_mem->lu_gp_mem_lock); |
| 1714 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1715 | pr_debug("Target_Core_ConfigFS: %s %s/%s to ALUA LU Group:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1716 | " core/alua/lu_gps/%s, ID: %hu\n", |
| 1717 | (move) ? "Moving" : "Adding", |
| 1718 | config_item_name(&hba->hba_group.cg_item), |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1719 | config_item_name(&dev->dev_group.cg_item), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1720 | config_item_name(&lu_gp_new->lu_gp_group.cg_item), |
| 1721 | lu_gp_new->lu_gp_id); |
| 1722 | |
| 1723 | core_alua_put_lu_gp_from_name(lu_gp_new); |
| 1724 | return count; |
| 1725 | } |
| 1726 | |
| 1727 | static struct target_core_configfs_attribute target_core_attr_dev_alua_lu_gp = { |
| 1728 | .attr = { .ca_owner = THIS_MODULE, |
| 1729 | .ca_name = "alua_lu_gp", |
| 1730 | .ca_mode = S_IRUGO | S_IWUSR }, |
| 1731 | .show = target_core_show_alua_lu_gp, |
| 1732 | .store = target_core_store_alua_lu_gp, |
| 1733 | }; |
| 1734 | |
| 1735 | static struct configfs_attribute *lio_core_dev_attrs[] = { |
| 1736 | &target_core_attr_dev_info.attr, |
| 1737 | &target_core_attr_dev_control.attr, |
| 1738 | &target_core_attr_dev_alias.attr, |
| 1739 | &target_core_attr_dev_udev_path.attr, |
| 1740 | &target_core_attr_dev_enable.attr, |
| 1741 | &target_core_attr_dev_alua_lu_gp.attr, |
| 1742 | NULL, |
| 1743 | }; |
| 1744 | |
| 1745 | static void target_core_dev_release(struct config_item *item) |
| 1746 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1747 | struct config_group *dev_cg = to_config_group(item); |
| 1748 | struct se_device *dev = |
| 1749 | container_of(dev_cg, struct se_device, dev_group); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1750 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1751 | kfree(dev_cg->default_groups); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1752 | target_free_device(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1753 | } |
| 1754 | |
| 1755 | static ssize_t target_core_dev_show(struct config_item *item, |
| 1756 | struct configfs_attribute *attr, |
| 1757 | char *page) |
| 1758 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1759 | struct config_group *dev_cg = to_config_group(item); |
| 1760 | struct se_device *dev = |
| 1761 | container_of(dev_cg, struct se_device, dev_group); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1762 | struct target_core_configfs_attribute *tc_attr = container_of( |
| 1763 | attr, struct target_core_configfs_attribute, attr); |
| 1764 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1765 | if (!tc_attr->show) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1766 | return -EINVAL; |
| 1767 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1768 | return tc_attr->show(dev, page); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1769 | } |
| 1770 | |
| 1771 | static ssize_t target_core_dev_store(struct config_item *item, |
| 1772 | struct configfs_attribute *attr, |
| 1773 | const char *page, size_t count) |
| 1774 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1775 | struct config_group *dev_cg = to_config_group(item); |
| 1776 | struct se_device *dev = |
| 1777 | container_of(dev_cg, struct se_device, dev_group); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1778 | struct target_core_configfs_attribute *tc_attr = container_of( |
| 1779 | attr, struct target_core_configfs_attribute, attr); |
| 1780 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1781 | if (!tc_attr->store) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1782 | return -EINVAL; |
| 1783 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1784 | return tc_attr->store(dev, page, count); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1785 | } |
| 1786 | |
| 1787 | static struct configfs_item_operations target_core_dev_item_ops = { |
| 1788 | .release = target_core_dev_release, |
| 1789 | .show_attribute = target_core_dev_show, |
| 1790 | .store_attribute = target_core_dev_store, |
| 1791 | }; |
| 1792 | |
| 1793 | static struct config_item_type target_core_dev_cit = { |
| 1794 | .ct_item_ops = &target_core_dev_item_ops, |
| 1795 | .ct_attrs = lio_core_dev_attrs, |
| 1796 | .ct_owner = THIS_MODULE, |
| 1797 | }; |
| 1798 | |
| 1799 | /* End functions for struct config_item_type target_core_dev_cit */ |
| 1800 | |
| 1801 | /* Start functions for struct config_item_type target_core_alua_lu_gp_cit */ |
| 1802 | |
| 1803 | CONFIGFS_EATTR_STRUCT(target_core_alua_lu_gp, t10_alua_lu_gp); |
| 1804 | #define SE_DEV_ALUA_LU_ATTR(_name, _mode) \ |
| 1805 | static struct target_core_alua_lu_gp_attribute \ |
| 1806 | target_core_alua_lu_gp_##_name = \ |
| 1807 | __CONFIGFS_EATTR(_name, _mode, \ |
| 1808 | target_core_alua_lu_gp_show_attr_##_name, \ |
| 1809 | target_core_alua_lu_gp_store_attr_##_name); |
| 1810 | |
| 1811 | #define SE_DEV_ALUA_LU_ATTR_RO(_name) \ |
| 1812 | static struct target_core_alua_lu_gp_attribute \ |
| 1813 | target_core_alua_lu_gp_##_name = \ |
| 1814 | __CONFIGFS_EATTR_RO(_name, \ |
| 1815 | target_core_alua_lu_gp_show_attr_##_name); |
| 1816 | |
| 1817 | /* |
| 1818 | * lu_gp_id |
| 1819 | */ |
| 1820 | static ssize_t target_core_alua_lu_gp_show_attr_lu_gp_id( |
| 1821 | struct t10_alua_lu_gp *lu_gp, |
| 1822 | char *page) |
| 1823 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1824 | if (!lu_gp->lu_gp_valid_id) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1825 | return 0; |
| 1826 | |
| 1827 | return sprintf(page, "%hu\n", lu_gp->lu_gp_id); |
| 1828 | } |
| 1829 | |
| 1830 | static ssize_t target_core_alua_lu_gp_store_attr_lu_gp_id( |
| 1831 | struct t10_alua_lu_gp *lu_gp, |
| 1832 | const char *page, |
| 1833 | size_t count) |
| 1834 | { |
| 1835 | struct config_group *alua_lu_gp_cg = &lu_gp->lu_gp_group; |
| 1836 | unsigned long lu_gp_id; |
| 1837 | int ret; |
| 1838 | |
| 1839 | ret = strict_strtoul(page, 0, &lu_gp_id); |
| 1840 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1841 | pr_err("strict_strtoul() returned %d for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1842 | " lu_gp_id\n", ret); |
| 1843 | return -EINVAL; |
| 1844 | } |
| 1845 | if (lu_gp_id > 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1846 | pr_err("ALUA lu_gp_id: %lu exceeds maximum:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1847 | " 0x0000ffff\n", lu_gp_id); |
| 1848 | return -EINVAL; |
| 1849 | } |
| 1850 | |
| 1851 | ret = core_alua_set_lu_gp_id(lu_gp, (u16)lu_gp_id); |
| 1852 | if (ret < 0) |
| 1853 | return -EINVAL; |
| 1854 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1855 | pr_debug("Target_Core_ConfigFS: Set ALUA Logical Unit" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1856 | " Group: core/alua/lu_gps/%s to ID: %hu\n", |
| 1857 | config_item_name(&alua_lu_gp_cg->cg_item), |
| 1858 | lu_gp->lu_gp_id); |
| 1859 | |
| 1860 | return count; |
| 1861 | } |
| 1862 | |
| 1863 | SE_DEV_ALUA_LU_ATTR(lu_gp_id, S_IRUGO | S_IWUSR); |
| 1864 | |
| 1865 | /* |
| 1866 | * members |
| 1867 | */ |
| 1868 | static ssize_t target_core_alua_lu_gp_show_attr_members( |
| 1869 | struct t10_alua_lu_gp *lu_gp, |
| 1870 | char *page) |
| 1871 | { |
| 1872 | struct se_device *dev; |
| 1873 | struct se_hba *hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1874 | struct t10_alua_lu_gp_member *lu_gp_mem; |
| 1875 | ssize_t len = 0, cur_len; |
| 1876 | unsigned char buf[LU_GROUP_NAME_BUF]; |
| 1877 | |
| 1878 | memset(buf, 0, LU_GROUP_NAME_BUF); |
| 1879 | |
| 1880 | spin_lock(&lu_gp->lu_gp_lock); |
| 1881 | list_for_each_entry(lu_gp_mem, &lu_gp->lu_gp_mem_list, lu_gp_mem_list) { |
| 1882 | dev = lu_gp_mem->lu_gp_mem_dev; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1883 | hba = dev->se_hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1884 | |
| 1885 | cur_len = snprintf(buf, LU_GROUP_NAME_BUF, "%s/%s\n", |
| 1886 | config_item_name(&hba->hba_group.cg_item), |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 1887 | config_item_name(&dev->dev_group.cg_item)); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1888 | cur_len++; /* Extra byte for NULL terminator */ |
| 1889 | |
| 1890 | if ((cur_len + len) > PAGE_SIZE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1891 | pr_warn("Ran out of lu_gp_show_attr" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1892 | "_members buffer\n"); |
| 1893 | break; |
| 1894 | } |
| 1895 | memcpy(page+len, buf, cur_len); |
| 1896 | len += cur_len; |
| 1897 | } |
| 1898 | spin_unlock(&lu_gp->lu_gp_lock); |
| 1899 | |
| 1900 | return len; |
| 1901 | } |
| 1902 | |
| 1903 | SE_DEV_ALUA_LU_ATTR_RO(members); |
| 1904 | |
| 1905 | CONFIGFS_EATTR_OPS(target_core_alua_lu_gp, t10_alua_lu_gp, lu_gp_group); |
| 1906 | |
| 1907 | static struct configfs_attribute *target_core_alua_lu_gp_attrs[] = { |
| 1908 | &target_core_alua_lu_gp_lu_gp_id.attr, |
| 1909 | &target_core_alua_lu_gp_members.attr, |
| 1910 | NULL, |
| 1911 | }; |
| 1912 | |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 1913 | static void target_core_alua_lu_gp_release(struct config_item *item) |
| 1914 | { |
| 1915 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), |
| 1916 | struct t10_alua_lu_gp, lu_gp_group); |
| 1917 | |
| 1918 | core_alua_free_lu_gp(lu_gp); |
| 1919 | } |
| 1920 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1921 | static struct configfs_item_operations target_core_alua_lu_gp_ops = { |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 1922 | .release = target_core_alua_lu_gp_release, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1923 | .show_attribute = target_core_alua_lu_gp_attr_show, |
| 1924 | .store_attribute = target_core_alua_lu_gp_attr_store, |
| 1925 | }; |
| 1926 | |
| 1927 | static struct config_item_type target_core_alua_lu_gp_cit = { |
| 1928 | .ct_item_ops = &target_core_alua_lu_gp_ops, |
| 1929 | .ct_attrs = target_core_alua_lu_gp_attrs, |
| 1930 | .ct_owner = THIS_MODULE, |
| 1931 | }; |
| 1932 | |
| 1933 | /* End functions for struct config_item_type target_core_alua_lu_gp_cit */ |
| 1934 | |
| 1935 | /* Start functions for struct config_item_type target_core_alua_lu_gps_cit */ |
| 1936 | |
| 1937 | static struct config_group *target_core_alua_create_lu_gp( |
| 1938 | struct config_group *group, |
| 1939 | const char *name) |
| 1940 | { |
| 1941 | struct t10_alua_lu_gp *lu_gp; |
| 1942 | struct config_group *alua_lu_gp_cg = NULL; |
| 1943 | struct config_item *alua_lu_gp_ci = NULL; |
| 1944 | |
| 1945 | lu_gp = core_alua_allocate_lu_gp(name, 0); |
| 1946 | if (IS_ERR(lu_gp)) |
| 1947 | return NULL; |
| 1948 | |
| 1949 | alua_lu_gp_cg = &lu_gp->lu_gp_group; |
| 1950 | alua_lu_gp_ci = &alua_lu_gp_cg->cg_item; |
| 1951 | |
| 1952 | config_group_init_type_name(alua_lu_gp_cg, name, |
| 1953 | &target_core_alua_lu_gp_cit); |
| 1954 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1955 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Logical Unit" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1956 | " Group: core/alua/lu_gps/%s\n", |
| 1957 | config_item_name(alua_lu_gp_ci)); |
| 1958 | |
| 1959 | return alua_lu_gp_cg; |
| 1960 | |
| 1961 | } |
| 1962 | |
| 1963 | static void target_core_alua_drop_lu_gp( |
| 1964 | struct config_group *group, |
| 1965 | struct config_item *item) |
| 1966 | { |
| 1967 | struct t10_alua_lu_gp *lu_gp = container_of(to_config_group(item), |
| 1968 | struct t10_alua_lu_gp, lu_gp_group); |
| 1969 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 1970 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Logical Unit" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1971 | " Group: core/alua/lu_gps/%s, ID: %hu\n", |
| 1972 | config_item_name(item), lu_gp->lu_gp_id); |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 1973 | /* |
| 1974 | * core_alua_free_lu_gp() is called from target_core_alua_lu_gp_ops->release() |
| 1975 | * -> target_core_alua_lu_gp_release() |
| 1976 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1977 | config_item_put(item); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 1978 | } |
| 1979 | |
| 1980 | static struct configfs_group_operations target_core_alua_lu_gps_group_ops = { |
| 1981 | .make_group = &target_core_alua_create_lu_gp, |
| 1982 | .drop_item = &target_core_alua_drop_lu_gp, |
| 1983 | }; |
| 1984 | |
| 1985 | static struct config_item_type target_core_alua_lu_gps_cit = { |
| 1986 | .ct_item_ops = NULL, |
| 1987 | .ct_group_ops = &target_core_alua_lu_gps_group_ops, |
| 1988 | .ct_owner = THIS_MODULE, |
| 1989 | }; |
| 1990 | |
| 1991 | /* End functions for struct config_item_type target_core_alua_lu_gps_cit */ |
| 1992 | |
| 1993 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ |
| 1994 | |
| 1995 | CONFIGFS_EATTR_STRUCT(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp); |
| 1996 | #define SE_DEV_ALUA_TG_PT_ATTR(_name, _mode) \ |
| 1997 | static struct target_core_alua_tg_pt_gp_attribute \ |
| 1998 | target_core_alua_tg_pt_gp_##_name = \ |
| 1999 | __CONFIGFS_EATTR(_name, _mode, \ |
| 2000 | target_core_alua_tg_pt_gp_show_attr_##_name, \ |
| 2001 | target_core_alua_tg_pt_gp_store_attr_##_name); |
| 2002 | |
| 2003 | #define SE_DEV_ALUA_TG_PT_ATTR_RO(_name) \ |
| 2004 | static struct target_core_alua_tg_pt_gp_attribute \ |
| 2005 | target_core_alua_tg_pt_gp_##_name = \ |
| 2006 | __CONFIGFS_EATTR_RO(_name, \ |
| 2007 | target_core_alua_tg_pt_gp_show_attr_##_name); |
| 2008 | |
| 2009 | /* |
| 2010 | * alua_access_state |
| 2011 | */ |
| 2012 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_state( |
| 2013 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2014 | char *page) |
| 2015 | { |
| 2016 | return sprintf(page, "%d\n", |
| 2017 | atomic_read(&tg_pt_gp->tg_pt_gp_alua_access_state)); |
| 2018 | } |
| 2019 | |
| 2020 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_state( |
| 2021 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2022 | const char *page, |
| 2023 | size_t count) |
| 2024 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2025 | struct se_device *dev = tg_pt_gp->tg_pt_gp_dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2026 | unsigned long tmp; |
| 2027 | int new_state, ret; |
| 2028 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2029 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
| 2030 | pr_err("Unable to do implict ALUA on non valid" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2031 | " tg_pt_gp ID: %hu\n", tg_pt_gp->tg_pt_gp_valid_id); |
| 2032 | return -EINVAL; |
| 2033 | } |
| 2034 | |
| 2035 | ret = strict_strtoul(page, 0, &tmp); |
| 2036 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2037 | pr_err("Unable to extract new ALUA access state from" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2038 | " %s\n", page); |
| 2039 | return -EINVAL; |
| 2040 | } |
| 2041 | new_state = (int)tmp; |
| 2042 | |
| 2043 | if (!(tg_pt_gp->tg_pt_gp_alua_access_type & TPGS_IMPLICT_ALUA)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2044 | pr_err("Unable to process implict configfs ALUA" |
Masanari Iida | 5e58b02 | 2012-02-27 23:18:15 +0900 | [diff] [blame] | 2045 | " transition while TPGS_IMPLICT_ALUA is disabled\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2046 | return -EINVAL; |
| 2047 | } |
| 2048 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2049 | ret = core_alua_do_port_transition(tg_pt_gp, dev, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2050 | NULL, NULL, new_state, 0); |
| 2051 | return (!ret) ? count : -EINVAL; |
| 2052 | } |
| 2053 | |
| 2054 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_state, S_IRUGO | S_IWUSR); |
| 2055 | |
| 2056 | /* |
| 2057 | * alua_access_status |
| 2058 | */ |
| 2059 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_status( |
| 2060 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2061 | char *page) |
| 2062 | { |
| 2063 | return sprintf(page, "%s\n", |
| 2064 | core_alua_dump_status(tg_pt_gp->tg_pt_gp_alua_access_status)); |
| 2065 | } |
| 2066 | |
| 2067 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_status( |
| 2068 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2069 | const char *page, |
| 2070 | size_t count) |
| 2071 | { |
| 2072 | unsigned long tmp; |
| 2073 | int new_status, ret; |
| 2074 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2075 | if (!tg_pt_gp->tg_pt_gp_valid_id) { |
| 2076 | pr_err("Unable to do set ALUA access status on non" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2077 | " valid tg_pt_gp ID: %hu\n", |
| 2078 | tg_pt_gp->tg_pt_gp_valid_id); |
| 2079 | return -EINVAL; |
| 2080 | } |
| 2081 | |
| 2082 | ret = strict_strtoul(page, 0, &tmp); |
| 2083 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2084 | pr_err("Unable to extract new ALUA access status" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2085 | " from %s\n", page); |
| 2086 | return -EINVAL; |
| 2087 | } |
| 2088 | new_status = (int)tmp; |
| 2089 | |
| 2090 | if ((new_status != ALUA_STATUS_NONE) && |
| 2091 | (new_status != ALUA_STATUS_ALTERED_BY_EXPLICT_STPG) && |
| 2092 | (new_status != ALUA_STATUS_ALTERED_BY_IMPLICT_ALUA)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2093 | pr_err("Illegal ALUA access status: 0x%02x\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2094 | new_status); |
| 2095 | return -EINVAL; |
| 2096 | } |
| 2097 | |
| 2098 | tg_pt_gp->tg_pt_gp_alua_access_status = new_status; |
| 2099 | return count; |
| 2100 | } |
| 2101 | |
| 2102 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_status, S_IRUGO | S_IWUSR); |
| 2103 | |
| 2104 | /* |
| 2105 | * alua_access_type |
| 2106 | */ |
| 2107 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_access_type( |
| 2108 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2109 | char *page) |
| 2110 | { |
| 2111 | return core_alua_show_access_type(tg_pt_gp, page); |
| 2112 | } |
| 2113 | |
| 2114 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_access_type( |
| 2115 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2116 | const char *page, |
| 2117 | size_t count) |
| 2118 | { |
| 2119 | return core_alua_store_access_type(tg_pt_gp, page, count); |
| 2120 | } |
| 2121 | |
| 2122 | SE_DEV_ALUA_TG_PT_ATTR(alua_access_type, S_IRUGO | S_IWUSR); |
| 2123 | |
| 2124 | /* |
| 2125 | * alua_write_metadata |
| 2126 | */ |
| 2127 | static ssize_t target_core_alua_tg_pt_gp_show_attr_alua_write_metadata( |
| 2128 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2129 | char *page) |
| 2130 | { |
| 2131 | return sprintf(page, "%d\n", tg_pt_gp->tg_pt_gp_write_metadata); |
| 2132 | } |
| 2133 | |
| 2134 | static ssize_t target_core_alua_tg_pt_gp_store_attr_alua_write_metadata( |
| 2135 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2136 | const char *page, |
| 2137 | size_t count) |
| 2138 | { |
| 2139 | unsigned long tmp; |
| 2140 | int ret; |
| 2141 | |
| 2142 | ret = strict_strtoul(page, 0, &tmp); |
| 2143 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2144 | pr_err("Unable to extract alua_write_metadata\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2145 | return -EINVAL; |
| 2146 | } |
| 2147 | |
| 2148 | if ((tmp != 0) && (tmp != 1)) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2149 | pr_err("Illegal value for alua_write_metadata:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2150 | " %lu\n", tmp); |
| 2151 | return -EINVAL; |
| 2152 | } |
| 2153 | tg_pt_gp->tg_pt_gp_write_metadata = (int)tmp; |
| 2154 | |
| 2155 | return count; |
| 2156 | } |
| 2157 | |
| 2158 | SE_DEV_ALUA_TG_PT_ATTR(alua_write_metadata, S_IRUGO | S_IWUSR); |
| 2159 | |
| 2160 | |
| 2161 | |
| 2162 | /* |
| 2163 | * nonop_delay_msecs |
| 2164 | */ |
| 2165 | static ssize_t target_core_alua_tg_pt_gp_show_attr_nonop_delay_msecs( |
| 2166 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2167 | char *page) |
| 2168 | { |
| 2169 | return core_alua_show_nonop_delay_msecs(tg_pt_gp, page); |
| 2170 | |
| 2171 | } |
| 2172 | |
| 2173 | static ssize_t target_core_alua_tg_pt_gp_store_attr_nonop_delay_msecs( |
| 2174 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2175 | const char *page, |
| 2176 | size_t count) |
| 2177 | { |
| 2178 | return core_alua_store_nonop_delay_msecs(tg_pt_gp, page, count); |
| 2179 | } |
| 2180 | |
| 2181 | SE_DEV_ALUA_TG_PT_ATTR(nonop_delay_msecs, S_IRUGO | S_IWUSR); |
| 2182 | |
| 2183 | /* |
| 2184 | * trans_delay_msecs |
| 2185 | */ |
| 2186 | static ssize_t target_core_alua_tg_pt_gp_show_attr_trans_delay_msecs( |
| 2187 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2188 | char *page) |
| 2189 | { |
| 2190 | return core_alua_show_trans_delay_msecs(tg_pt_gp, page); |
| 2191 | } |
| 2192 | |
| 2193 | static ssize_t target_core_alua_tg_pt_gp_store_attr_trans_delay_msecs( |
| 2194 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2195 | const char *page, |
| 2196 | size_t count) |
| 2197 | { |
| 2198 | return core_alua_store_trans_delay_msecs(tg_pt_gp, page, count); |
| 2199 | } |
| 2200 | |
| 2201 | SE_DEV_ALUA_TG_PT_ATTR(trans_delay_msecs, S_IRUGO | S_IWUSR); |
| 2202 | |
| 2203 | /* |
Nicholas Bellinger | 5b9a4d7 | 2012-05-16 22:02:34 -0700 | [diff] [blame] | 2204 | * implict_trans_secs |
| 2205 | */ |
| 2206 | static ssize_t target_core_alua_tg_pt_gp_show_attr_implict_trans_secs( |
| 2207 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2208 | char *page) |
| 2209 | { |
| 2210 | return core_alua_show_implict_trans_secs(tg_pt_gp, page); |
| 2211 | } |
| 2212 | |
| 2213 | static ssize_t target_core_alua_tg_pt_gp_store_attr_implict_trans_secs( |
| 2214 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2215 | const char *page, |
| 2216 | size_t count) |
| 2217 | { |
| 2218 | return core_alua_store_implict_trans_secs(tg_pt_gp, page, count); |
| 2219 | } |
| 2220 | |
| 2221 | SE_DEV_ALUA_TG_PT_ATTR(implict_trans_secs, S_IRUGO | S_IWUSR); |
| 2222 | |
| 2223 | /* |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2224 | * preferred |
| 2225 | */ |
| 2226 | |
| 2227 | static ssize_t target_core_alua_tg_pt_gp_show_attr_preferred( |
| 2228 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2229 | char *page) |
| 2230 | { |
| 2231 | return core_alua_show_preferred_bit(tg_pt_gp, page); |
| 2232 | } |
| 2233 | |
| 2234 | static ssize_t target_core_alua_tg_pt_gp_store_attr_preferred( |
| 2235 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2236 | const char *page, |
| 2237 | size_t count) |
| 2238 | { |
| 2239 | return core_alua_store_preferred_bit(tg_pt_gp, page, count); |
| 2240 | } |
| 2241 | |
| 2242 | SE_DEV_ALUA_TG_PT_ATTR(preferred, S_IRUGO | S_IWUSR); |
| 2243 | |
| 2244 | /* |
| 2245 | * tg_pt_gp_id |
| 2246 | */ |
| 2247 | static ssize_t target_core_alua_tg_pt_gp_show_attr_tg_pt_gp_id( |
| 2248 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2249 | char *page) |
| 2250 | { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2251 | if (!tg_pt_gp->tg_pt_gp_valid_id) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2252 | return 0; |
| 2253 | |
| 2254 | return sprintf(page, "%hu\n", tg_pt_gp->tg_pt_gp_id); |
| 2255 | } |
| 2256 | |
| 2257 | static ssize_t target_core_alua_tg_pt_gp_store_attr_tg_pt_gp_id( |
| 2258 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2259 | const char *page, |
| 2260 | size_t count) |
| 2261 | { |
| 2262 | struct config_group *alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; |
| 2263 | unsigned long tg_pt_gp_id; |
| 2264 | int ret; |
| 2265 | |
| 2266 | ret = strict_strtoul(page, 0, &tg_pt_gp_id); |
| 2267 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2268 | pr_err("strict_strtoul() returned %d for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2269 | " tg_pt_gp_id\n", ret); |
| 2270 | return -EINVAL; |
| 2271 | } |
| 2272 | if (tg_pt_gp_id > 0x0000ffff) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2273 | pr_err("ALUA tg_pt_gp_id: %lu exceeds maximum:" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2274 | " 0x0000ffff\n", tg_pt_gp_id); |
| 2275 | return -EINVAL; |
| 2276 | } |
| 2277 | |
| 2278 | ret = core_alua_set_tg_pt_gp_id(tg_pt_gp, (u16)tg_pt_gp_id); |
| 2279 | if (ret < 0) |
| 2280 | return -EINVAL; |
| 2281 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2282 | pr_debug("Target_Core_ConfigFS: Set ALUA Target Port Group: " |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2283 | "core/alua/tg_pt_gps/%s to ID: %hu\n", |
| 2284 | config_item_name(&alua_tg_pt_gp_cg->cg_item), |
| 2285 | tg_pt_gp->tg_pt_gp_id); |
| 2286 | |
| 2287 | return count; |
| 2288 | } |
| 2289 | |
| 2290 | SE_DEV_ALUA_TG_PT_ATTR(tg_pt_gp_id, S_IRUGO | S_IWUSR); |
| 2291 | |
| 2292 | /* |
| 2293 | * members |
| 2294 | */ |
| 2295 | static ssize_t target_core_alua_tg_pt_gp_show_attr_members( |
| 2296 | struct t10_alua_tg_pt_gp *tg_pt_gp, |
| 2297 | char *page) |
| 2298 | { |
| 2299 | struct se_port *port; |
| 2300 | struct se_portal_group *tpg; |
| 2301 | struct se_lun *lun; |
| 2302 | struct t10_alua_tg_pt_gp_member *tg_pt_gp_mem; |
| 2303 | ssize_t len = 0, cur_len; |
| 2304 | unsigned char buf[TG_PT_GROUP_NAME_BUF]; |
| 2305 | |
| 2306 | memset(buf, 0, TG_PT_GROUP_NAME_BUF); |
| 2307 | |
| 2308 | spin_lock(&tg_pt_gp->tg_pt_gp_lock); |
| 2309 | list_for_each_entry(tg_pt_gp_mem, &tg_pt_gp->tg_pt_gp_mem_list, |
| 2310 | tg_pt_gp_mem_list) { |
| 2311 | port = tg_pt_gp_mem->tg_pt; |
| 2312 | tpg = port->sep_tpg; |
| 2313 | lun = port->sep_lun; |
| 2314 | |
| 2315 | cur_len = snprintf(buf, TG_PT_GROUP_NAME_BUF, "%s/%s/tpgt_%hu" |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2316 | "/%s\n", tpg->se_tpg_tfo->get_fabric_name(), |
| 2317 | tpg->se_tpg_tfo->tpg_get_wwn(tpg), |
| 2318 | tpg->se_tpg_tfo->tpg_get_tag(tpg), |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2319 | config_item_name(&lun->lun_group.cg_item)); |
| 2320 | cur_len++; /* Extra byte for NULL terminator */ |
| 2321 | |
| 2322 | if ((cur_len + len) > PAGE_SIZE) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2323 | pr_warn("Ran out of lu_gp_show_attr" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2324 | "_members buffer\n"); |
| 2325 | break; |
| 2326 | } |
| 2327 | memcpy(page+len, buf, cur_len); |
| 2328 | len += cur_len; |
| 2329 | } |
| 2330 | spin_unlock(&tg_pt_gp->tg_pt_gp_lock); |
| 2331 | |
| 2332 | return len; |
| 2333 | } |
| 2334 | |
| 2335 | SE_DEV_ALUA_TG_PT_ATTR_RO(members); |
| 2336 | |
| 2337 | CONFIGFS_EATTR_OPS(target_core_alua_tg_pt_gp, t10_alua_tg_pt_gp, |
| 2338 | tg_pt_gp_group); |
| 2339 | |
| 2340 | static struct configfs_attribute *target_core_alua_tg_pt_gp_attrs[] = { |
| 2341 | &target_core_alua_tg_pt_gp_alua_access_state.attr, |
| 2342 | &target_core_alua_tg_pt_gp_alua_access_status.attr, |
| 2343 | &target_core_alua_tg_pt_gp_alua_access_type.attr, |
| 2344 | &target_core_alua_tg_pt_gp_alua_write_metadata.attr, |
| 2345 | &target_core_alua_tg_pt_gp_nonop_delay_msecs.attr, |
| 2346 | &target_core_alua_tg_pt_gp_trans_delay_msecs.attr, |
Nicholas Bellinger | 5b9a4d7 | 2012-05-16 22:02:34 -0700 | [diff] [blame] | 2347 | &target_core_alua_tg_pt_gp_implict_trans_secs.attr, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2348 | &target_core_alua_tg_pt_gp_preferred.attr, |
| 2349 | &target_core_alua_tg_pt_gp_tg_pt_gp_id.attr, |
| 2350 | &target_core_alua_tg_pt_gp_members.attr, |
| 2351 | NULL, |
| 2352 | }; |
| 2353 | |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2354 | static void target_core_alua_tg_pt_gp_release(struct config_item *item) |
| 2355 | { |
| 2356 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), |
| 2357 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); |
| 2358 | |
| 2359 | core_alua_free_tg_pt_gp(tg_pt_gp); |
| 2360 | } |
| 2361 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2362 | static struct configfs_item_operations target_core_alua_tg_pt_gp_ops = { |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2363 | .release = target_core_alua_tg_pt_gp_release, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2364 | .show_attribute = target_core_alua_tg_pt_gp_attr_show, |
| 2365 | .store_attribute = target_core_alua_tg_pt_gp_attr_store, |
| 2366 | }; |
| 2367 | |
| 2368 | static struct config_item_type target_core_alua_tg_pt_gp_cit = { |
| 2369 | .ct_item_ops = &target_core_alua_tg_pt_gp_ops, |
| 2370 | .ct_attrs = target_core_alua_tg_pt_gp_attrs, |
| 2371 | .ct_owner = THIS_MODULE, |
| 2372 | }; |
| 2373 | |
| 2374 | /* End functions for struct config_item_type target_core_alua_tg_pt_gp_cit */ |
| 2375 | |
| 2376 | /* Start functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ |
| 2377 | |
| 2378 | static struct config_group *target_core_alua_create_tg_pt_gp( |
| 2379 | struct config_group *group, |
| 2380 | const char *name) |
| 2381 | { |
| 2382 | struct t10_alua *alua = container_of(group, struct t10_alua, |
| 2383 | alua_tg_pt_gps_group); |
| 2384 | struct t10_alua_tg_pt_gp *tg_pt_gp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2385 | struct config_group *alua_tg_pt_gp_cg = NULL; |
| 2386 | struct config_item *alua_tg_pt_gp_ci = NULL; |
| 2387 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2388 | tg_pt_gp = core_alua_allocate_tg_pt_gp(alua->t10_dev, name, 0); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2389 | if (!tg_pt_gp) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2390 | return NULL; |
| 2391 | |
| 2392 | alua_tg_pt_gp_cg = &tg_pt_gp->tg_pt_gp_group; |
| 2393 | alua_tg_pt_gp_ci = &alua_tg_pt_gp_cg->cg_item; |
| 2394 | |
| 2395 | config_group_init_type_name(alua_tg_pt_gp_cg, name, |
| 2396 | &target_core_alua_tg_pt_gp_cit); |
| 2397 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2398 | pr_debug("Target_Core_ConfigFS: Allocated ALUA Target Port" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2399 | " Group: alua/tg_pt_gps/%s\n", |
| 2400 | config_item_name(alua_tg_pt_gp_ci)); |
| 2401 | |
| 2402 | return alua_tg_pt_gp_cg; |
| 2403 | } |
| 2404 | |
| 2405 | static void target_core_alua_drop_tg_pt_gp( |
| 2406 | struct config_group *group, |
| 2407 | struct config_item *item) |
| 2408 | { |
| 2409 | struct t10_alua_tg_pt_gp *tg_pt_gp = container_of(to_config_group(item), |
| 2410 | struct t10_alua_tg_pt_gp, tg_pt_gp_group); |
| 2411 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2412 | pr_debug("Target_Core_ConfigFS: Releasing ALUA Target Port" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2413 | " Group: alua/tg_pt_gps/%s, ID: %hu\n", |
| 2414 | config_item_name(item), tg_pt_gp->tg_pt_gp_id); |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2415 | /* |
| 2416 | * core_alua_free_tg_pt_gp() is called from target_core_alua_tg_pt_gp_ops->release() |
| 2417 | * -> target_core_alua_tg_pt_gp_release(). |
| 2418 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2419 | config_item_put(item); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2420 | } |
| 2421 | |
| 2422 | static struct configfs_group_operations target_core_alua_tg_pt_gps_group_ops = { |
| 2423 | .make_group = &target_core_alua_create_tg_pt_gp, |
| 2424 | .drop_item = &target_core_alua_drop_tg_pt_gp, |
| 2425 | }; |
| 2426 | |
| 2427 | static struct config_item_type target_core_alua_tg_pt_gps_cit = { |
| 2428 | .ct_group_ops = &target_core_alua_tg_pt_gps_group_ops, |
| 2429 | .ct_owner = THIS_MODULE, |
| 2430 | }; |
| 2431 | |
| 2432 | /* End functions for struct config_item_type target_core_alua_tg_pt_gps_cit */ |
| 2433 | |
| 2434 | /* Start functions for struct config_item_type target_core_alua_cit */ |
| 2435 | |
| 2436 | /* |
| 2437 | * target_core_alua_cit is a ConfigFS group that lives under |
| 2438 | * /sys/kernel/config/target/core/alua. There are default groups |
| 2439 | * core/alua/lu_gps and core/alua/tg_pt_gps that are attached to |
| 2440 | * target_core_alua_cit in target_core_init_configfs() below. |
| 2441 | */ |
| 2442 | static struct config_item_type target_core_alua_cit = { |
| 2443 | .ct_item_ops = NULL, |
| 2444 | .ct_attrs = NULL, |
| 2445 | .ct_owner = THIS_MODULE, |
| 2446 | }; |
| 2447 | |
| 2448 | /* End functions for struct config_item_type target_core_alua_cit */ |
| 2449 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2450 | /* Start functions for struct config_item_type target_core_stat_cit */ |
| 2451 | |
| 2452 | static struct config_group *target_core_stat_mkdir( |
| 2453 | struct config_group *group, |
| 2454 | const char *name) |
| 2455 | { |
| 2456 | return ERR_PTR(-ENOSYS); |
| 2457 | } |
| 2458 | |
| 2459 | static void target_core_stat_rmdir( |
| 2460 | struct config_group *group, |
| 2461 | struct config_item *item) |
| 2462 | { |
| 2463 | return; |
| 2464 | } |
| 2465 | |
| 2466 | static struct configfs_group_operations target_core_stat_group_ops = { |
| 2467 | .make_group = &target_core_stat_mkdir, |
| 2468 | .drop_item = &target_core_stat_rmdir, |
| 2469 | }; |
| 2470 | |
| 2471 | static struct config_item_type target_core_stat_cit = { |
| 2472 | .ct_group_ops = &target_core_stat_group_ops, |
| 2473 | .ct_owner = THIS_MODULE, |
| 2474 | }; |
| 2475 | |
| 2476 | /* End functions for struct config_item_type target_core_stat_cit */ |
| 2477 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2478 | /* Start functions for struct config_item_type target_core_hba_cit */ |
| 2479 | |
| 2480 | static struct config_group *target_core_make_subdev( |
| 2481 | struct config_group *group, |
| 2482 | const char *name) |
| 2483 | { |
| 2484 | struct t10_alua_tg_pt_gp *tg_pt_gp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2485 | struct se_subsystem_api *t; |
| 2486 | struct config_item *hba_ci = &group->cg_item; |
| 2487 | struct se_hba *hba = item_to_hba(hba_ci); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2488 | struct se_device *dev; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2489 | struct config_group *dev_cg = NULL, *tg_pt_gp_cg = NULL; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2490 | struct config_group *dev_stat_grp = NULL; |
| 2491 | int errno = -ENOMEM, ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2492 | |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2493 | ret = mutex_lock_interruptible(&hba->hba_access_mutex); |
| 2494 | if (ret) |
| 2495 | return ERR_PTR(ret); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2496 | /* |
| 2497 | * Locate the struct se_subsystem_api from parent's struct se_hba. |
| 2498 | */ |
| 2499 | t = hba->transport; |
| 2500 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2501 | dev = target_alloc_device(hba, name); |
| 2502 | if (!dev) |
| 2503 | goto out_unlock; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2504 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2505 | dev_cg = &dev->dev_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2506 | |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2507 | dev_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2508 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2509 | if (!dev_cg->default_groups) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2510 | goto out_free_device; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2511 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2512 | config_group_init_type_name(dev_cg, name, &target_core_dev_cit); |
| 2513 | config_group_init_type_name(&dev->dev_attrib.da_group, "attrib", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2514 | &target_core_dev_attrib_cit); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2515 | config_group_init_type_name(&dev->dev_pr_group, "pr", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2516 | &target_core_dev_pr_cit); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2517 | config_group_init_type_name(&dev->t10_wwn.t10_wwn_group, "wwn", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2518 | &target_core_dev_wwn_cit); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2519 | config_group_init_type_name(&dev->t10_alua.alua_tg_pt_gps_group, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2520 | "alua", &target_core_alua_tg_pt_gps_cit); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2521 | config_group_init_type_name(&dev->dev_stat_grps.stat_group, |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2522 | "statistics", &target_core_stat_cit); |
| 2523 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2524 | dev_cg->default_groups[0] = &dev->dev_attrib.da_group; |
| 2525 | dev_cg->default_groups[1] = &dev->dev_pr_group; |
| 2526 | dev_cg->default_groups[2] = &dev->t10_wwn.t10_wwn_group; |
| 2527 | dev_cg->default_groups[3] = &dev->t10_alua.alua_tg_pt_gps_group; |
| 2528 | dev_cg->default_groups[4] = &dev->dev_stat_grps.stat_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2529 | dev_cg->default_groups[5] = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2530 | /* |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2531 | * Add core/$HBA/$DEV/alua/default_tg_pt_gp |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2532 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2533 | tg_pt_gp = core_alua_allocate_tg_pt_gp(dev, "default_tg_pt_gp", 1); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2534 | if (!tg_pt_gp) |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2535 | goto out_free_dev_cg_default_groups; |
| 2536 | dev->t10_alua.default_tg_pt_gp = tg_pt_gp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2537 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2538 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2539 | tg_pt_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2540 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2541 | if (!tg_pt_gp_cg->default_groups) { |
| 2542 | pr_err("Unable to allocate tg_pt_gp_cg->" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2543 | "default_groups\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2544 | goto out_free_tg_pt_gp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2545 | } |
| 2546 | |
| 2547 | config_group_init_type_name(&tg_pt_gp->tg_pt_gp_group, |
| 2548 | "default_tg_pt_gp", &target_core_alua_tg_pt_gp_cit); |
| 2549 | tg_pt_gp_cg->default_groups[0] = &tg_pt_gp->tg_pt_gp_group; |
| 2550 | tg_pt_gp_cg->default_groups[1] = NULL; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2551 | /* |
| 2552 | * Add core/$HBA/$DEV/statistics/ default groups |
| 2553 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2554 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2555 | dev_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 4, |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2556 | GFP_KERNEL); |
| 2557 | if (!dev_stat_grp->default_groups) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2558 | pr_err("Unable to allocate dev_stat_grp->default_groups\n"); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2559 | goto out_free_tg_pt_gp_cg_default_groups; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2560 | } |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2561 | target_stat_setup_dev_default_groups(dev); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2562 | |
| 2563 | mutex_unlock(&hba->hba_access_mutex); |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2564 | return dev_cg; |
| 2565 | |
| 2566 | out_free_tg_pt_gp_cg_default_groups: |
| 2567 | kfree(tg_pt_gp_cg->default_groups); |
| 2568 | out_free_tg_pt_gp: |
| 2569 | core_alua_free_tg_pt_gp(tg_pt_gp); |
| 2570 | out_free_dev_cg_default_groups: |
| 2571 | kfree(dev_cg->default_groups); |
| 2572 | out_free_device: |
| 2573 | target_free_device(dev); |
| 2574 | out_unlock: |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2575 | mutex_unlock(&hba->hba_access_mutex); |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2576 | return ERR_PTR(errno); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2577 | } |
| 2578 | |
| 2579 | static void target_core_drop_subdev( |
| 2580 | struct config_group *group, |
| 2581 | struct config_item *item) |
| 2582 | { |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2583 | struct config_group *dev_cg = to_config_group(item); |
| 2584 | struct se_device *dev = |
| 2585 | container_of(dev_cg, struct se_device, dev_group); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2586 | struct se_hba *hba; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2587 | struct config_item *df_item; |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2588 | struct config_group *tg_pt_gp_cg, *dev_stat_grp; |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2589 | int i; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2590 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2591 | hba = item_to_hba(&dev->se_hba->hba_group.cg_item); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2592 | |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2593 | mutex_lock(&hba->hba_access_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2594 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2595 | dev_stat_grp = &dev->dev_stat_grps.stat_group; |
Nicholas Bellinger | 12d233842 | 2011-03-14 04:06:11 -0700 | [diff] [blame] | 2596 | for (i = 0; dev_stat_grp->default_groups[i]; i++) { |
| 2597 | df_item = &dev_stat_grp->default_groups[i]->cg_item; |
| 2598 | dev_stat_grp->default_groups[i] = NULL; |
| 2599 | config_item_put(df_item); |
| 2600 | } |
| 2601 | kfree(dev_stat_grp->default_groups); |
| 2602 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2603 | tg_pt_gp_cg = &dev->t10_alua.alua_tg_pt_gps_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2604 | for (i = 0; tg_pt_gp_cg->default_groups[i]; i++) { |
| 2605 | df_item = &tg_pt_gp_cg->default_groups[i]->cg_item; |
| 2606 | tg_pt_gp_cg->default_groups[i] = NULL; |
| 2607 | config_item_put(df_item); |
| 2608 | } |
| 2609 | kfree(tg_pt_gp_cg->default_groups); |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2610 | /* |
| 2611 | * core_alua_free_tg_pt_gp() is called from ->default_tg_pt_gp |
| 2612 | * directly from target_core_alua_tg_pt_gp_release(). |
| 2613 | */ |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2614 | dev->t10_alua.default_tg_pt_gp = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2615 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2616 | for (i = 0; dev_cg->default_groups[i]; i++) { |
| 2617 | df_item = &dev_cg->default_groups[i]->cg_item; |
| 2618 | dev_cg->default_groups[i] = NULL; |
| 2619 | config_item_put(df_item); |
| 2620 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2621 | /* |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2622 | * se_dev is released from target_core_dev_item_ops->release() |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2623 | */ |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2624 | config_item_put(item); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2625 | mutex_unlock(&hba->hba_access_mutex); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2626 | } |
| 2627 | |
| 2628 | static struct configfs_group_operations target_core_hba_group_ops = { |
| 2629 | .make_group = target_core_make_subdev, |
| 2630 | .drop_item = target_core_drop_subdev, |
| 2631 | }; |
| 2632 | |
| 2633 | CONFIGFS_EATTR_STRUCT(target_core_hba, se_hba); |
| 2634 | #define SE_HBA_ATTR(_name, _mode) \ |
| 2635 | static struct target_core_hba_attribute \ |
| 2636 | target_core_hba_##_name = \ |
| 2637 | __CONFIGFS_EATTR(_name, _mode, \ |
| 2638 | target_core_hba_show_attr_##_name, \ |
| 2639 | target_core_hba_store_attr_##_name); |
| 2640 | |
| 2641 | #define SE_HBA_ATTR_RO(_name) \ |
| 2642 | static struct target_core_hba_attribute \ |
| 2643 | target_core_hba_##_name = \ |
| 2644 | __CONFIGFS_EATTR_RO(_name, \ |
| 2645 | target_core_hba_show_attr_##_name); |
| 2646 | |
| 2647 | static ssize_t target_core_hba_show_attr_hba_info( |
| 2648 | struct se_hba *hba, |
| 2649 | char *page) |
| 2650 | { |
| 2651 | return sprintf(page, "HBA Index: %d plugin: %s version: %s\n", |
| 2652 | hba->hba_id, hba->transport->name, |
| 2653 | TARGET_CORE_CONFIGFS_VERSION); |
| 2654 | } |
| 2655 | |
| 2656 | SE_HBA_ATTR_RO(hba_info); |
| 2657 | |
| 2658 | static ssize_t target_core_hba_show_attr_hba_mode(struct se_hba *hba, |
| 2659 | char *page) |
| 2660 | { |
| 2661 | int hba_mode = 0; |
| 2662 | |
| 2663 | if (hba->hba_flags & HBA_FLAGS_PSCSI_MODE) |
| 2664 | hba_mode = 1; |
| 2665 | |
| 2666 | return sprintf(page, "%d\n", hba_mode); |
| 2667 | } |
| 2668 | |
| 2669 | static ssize_t target_core_hba_store_attr_hba_mode(struct se_hba *hba, |
| 2670 | const char *page, size_t count) |
| 2671 | { |
| 2672 | struct se_subsystem_api *transport = hba->transport; |
| 2673 | unsigned long mode_flag; |
| 2674 | int ret; |
| 2675 | |
| 2676 | if (transport->pmode_enable_hba == NULL) |
| 2677 | return -EINVAL; |
| 2678 | |
| 2679 | ret = strict_strtoul(page, 0, &mode_flag); |
| 2680 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2681 | pr_err("Unable to extract hba mode flag: %d\n", ret); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2682 | return -EINVAL; |
| 2683 | } |
| 2684 | |
Christoph Hellwig | 0fd97cc | 2012-10-08 00:03:19 -0400 | [diff] [blame] | 2685 | if (hba->dev_count) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2686 | pr_err("Unable to set hba_mode with active devices\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2687 | return -EINVAL; |
| 2688 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2689 | |
| 2690 | ret = transport->pmode_enable_hba(hba, mode_flag); |
| 2691 | if (ret < 0) |
| 2692 | return -EINVAL; |
| 2693 | if (ret > 0) |
| 2694 | hba->hba_flags |= HBA_FLAGS_PSCSI_MODE; |
| 2695 | else if (ret == 0) |
| 2696 | hba->hba_flags &= ~HBA_FLAGS_PSCSI_MODE; |
| 2697 | |
| 2698 | return count; |
| 2699 | } |
| 2700 | |
| 2701 | SE_HBA_ATTR(hba_mode, S_IRUGO | S_IWUSR); |
| 2702 | |
| 2703 | CONFIGFS_EATTR_OPS(target_core_hba, se_hba, hba_group); |
| 2704 | |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2705 | static void target_core_hba_release(struct config_item *item) |
| 2706 | { |
| 2707 | struct se_hba *hba = container_of(to_config_group(item), |
| 2708 | struct se_hba, hba_group); |
| 2709 | core_delete_hba(hba); |
| 2710 | } |
| 2711 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2712 | static struct configfs_attribute *target_core_hba_attrs[] = { |
| 2713 | &target_core_hba_hba_info.attr, |
| 2714 | &target_core_hba_hba_mode.attr, |
| 2715 | NULL, |
| 2716 | }; |
| 2717 | |
| 2718 | static struct configfs_item_operations target_core_hba_item_ops = { |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2719 | .release = target_core_hba_release, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2720 | .show_attribute = target_core_hba_attr_show, |
| 2721 | .store_attribute = target_core_hba_attr_store, |
| 2722 | }; |
| 2723 | |
| 2724 | static struct config_item_type target_core_hba_cit = { |
| 2725 | .ct_item_ops = &target_core_hba_item_ops, |
| 2726 | .ct_group_ops = &target_core_hba_group_ops, |
| 2727 | .ct_attrs = target_core_hba_attrs, |
| 2728 | .ct_owner = THIS_MODULE, |
| 2729 | }; |
| 2730 | |
| 2731 | static struct config_group *target_core_call_addhbatotarget( |
| 2732 | struct config_group *group, |
| 2733 | const char *name) |
| 2734 | { |
| 2735 | char *se_plugin_str, *str, *str2; |
| 2736 | struct se_hba *hba; |
| 2737 | char buf[TARGET_CORE_NAME_MAX_LEN]; |
| 2738 | unsigned long plugin_dep_id = 0; |
| 2739 | int ret; |
| 2740 | |
| 2741 | memset(buf, 0, TARGET_CORE_NAME_MAX_LEN); |
Dan Carpenter | 60d645a | 2011-06-15 10:03:05 -0700 | [diff] [blame] | 2742 | if (strlen(name) >= TARGET_CORE_NAME_MAX_LEN) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2743 | pr_err("Passed *name strlen(): %d exceeds" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2744 | " TARGET_CORE_NAME_MAX_LEN: %d\n", (int)strlen(name), |
| 2745 | TARGET_CORE_NAME_MAX_LEN); |
| 2746 | return ERR_PTR(-ENAMETOOLONG); |
| 2747 | } |
| 2748 | snprintf(buf, TARGET_CORE_NAME_MAX_LEN, "%s", name); |
| 2749 | |
| 2750 | str = strstr(buf, "_"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2751 | if (!str) { |
| 2752 | pr_err("Unable to locate \"_\" for $SUBSYSTEM_PLUGIN_$HOST_ID\n"); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2753 | return ERR_PTR(-EINVAL); |
| 2754 | } |
| 2755 | se_plugin_str = buf; |
| 2756 | /* |
| 2757 | * Special case for subsystem plugins that have "_" in their names. |
| 2758 | * Namely rd_direct and rd_mcp.. |
| 2759 | */ |
| 2760 | str2 = strstr(str+1, "_"); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2761 | if (str2) { |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2762 | *str2 = '\0'; /* Terminate for *se_plugin_str */ |
| 2763 | str2++; /* Skip to start of plugin dependent ID */ |
| 2764 | str = str2; |
| 2765 | } else { |
| 2766 | *str = '\0'; /* Terminate for *se_plugin_str */ |
| 2767 | str++; /* Skip to start of plugin dependent ID */ |
| 2768 | } |
| 2769 | |
| 2770 | ret = strict_strtoul(str, 0, &plugin_dep_id); |
| 2771 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2772 | pr_err("strict_strtoul() returned %d for" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2773 | " plugin_dep_id\n", ret); |
| 2774 | return ERR_PTR(-EINVAL); |
| 2775 | } |
| 2776 | /* |
| 2777 | * Load up TCM subsystem plugins if they have not already been loaded. |
| 2778 | */ |
Nicholas Bellinger | dbc5623 | 2011-10-22 01:03:54 -0700 | [diff] [blame] | 2779 | transport_subsystem_check_init(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2780 | |
| 2781 | hba = core_alloc_hba(se_plugin_str, plugin_dep_id, 0); |
| 2782 | if (IS_ERR(hba)) |
| 2783 | return ERR_CAST(hba); |
| 2784 | |
| 2785 | config_group_init_type_name(&hba->hba_group, name, |
| 2786 | &target_core_hba_cit); |
| 2787 | |
| 2788 | return &hba->hba_group; |
| 2789 | } |
| 2790 | |
| 2791 | static void target_core_call_delhbafromtarget( |
| 2792 | struct config_group *group, |
| 2793 | struct config_item *item) |
| 2794 | { |
Nicholas Bellinger | 1f6fe7c | 2011-02-09 15:34:54 -0800 | [diff] [blame] | 2795 | /* |
| 2796 | * core_delete_hba() is called from target_core_hba_item_ops->release() |
| 2797 | * -> target_core_hba_release() |
| 2798 | */ |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2799 | config_item_put(item); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2800 | } |
| 2801 | |
| 2802 | static struct configfs_group_operations target_core_group_ops = { |
| 2803 | .make_group = target_core_call_addhbatotarget, |
| 2804 | .drop_item = target_core_call_delhbafromtarget, |
| 2805 | }; |
| 2806 | |
| 2807 | static struct config_item_type target_core_cit = { |
| 2808 | .ct_item_ops = NULL, |
| 2809 | .ct_group_ops = &target_core_group_ops, |
| 2810 | .ct_attrs = NULL, |
| 2811 | .ct_owner = THIS_MODULE, |
| 2812 | }; |
| 2813 | |
| 2814 | /* Stop functions for struct config_item_type target_core_hba_cit */ |
| 2815 | |
Axel Lin | 54550fa | 2011-03-14 04:06:09 -0700 | [diff] [blame] | 2816 | static int __init target_core_init_configfs(void) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2817 | { |
| 2818 | struct config_group *target_cg, *hba_cg = NULL, *alua_cg = NULL; |
| 2819 | struct config_group *lu_gp_cg = NULL; |
| 2820 | struct configfs_subsystem *subsys; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2821 | struct t10_alua_lu_gp *lu_gp; |
| 2822 | int ret; |
| 2823 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2824 | pr_debug("TARGET_CORE[0]: Loading Generic Kernel Storage" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2825 | " Engine: %s on %s/%s on "UTS_RELEASE"\n", |
| 2826 | TARGET_CORE_VERSION, utsname()->sysname, utsname()->machine); |
| 2827 | |
| 2828 | subsys = target_core_subsystem[0]; |
| 2829 | config_group_init(&subsys->su_group); |
| 2830 | mutex_init(&subsys->su_mutex); |
| 2831 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2832 | ret = init_se_kmem_caches(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2833 | if (ret < 0) |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2834 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2835 | /* |
| 2836 | * Create $CONFIGFS/target/core default group for HBA <-> Storage Object |
| 2837 | * and ALUA Logical Unit Group and Target Port Group infrastructure. |
| 2838 | */ |
| 2839 | target_cg = &subsys->su_group; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2840 | target_cg->default_groups = kmalloc(sizeof(struct config_group) * 2, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2841 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2842 | if (!target_cg->default_groups) { |
| 2843 | pr_err("Unable to allocate target_cg->default_groups\n"); |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2844 | ret = -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2845 | goto out_global; |
| 2846 | } |
| 2847 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2848 | config_group_init_type_name(&target_core_hbagroup, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2849 | "core", &target_core_cit); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2850 | target_cg->default_groups[0] = &target_core_hbagroup; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2851 | target_cg->default_groups[1] = NULL; |
| 2852 | /* |
| 2853 | * Create ALUA infrastructure under /sys/kernel/config/target/core/alua/ |
| 2854 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2855 | hba_cg = &target_core_hbagroup; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2856 | hba_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2857 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2858 | if (!hba_cg->default_groups) { |
| 2859 | pr_err("Unable to allocate hba_cg->default_groups\n"); |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2860 | ret = -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2861 | goto out_global; |
| 2862 | } |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2863 | config_group_init_type_name(&alua_group, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2864 | "alua", &target_core_alua_cit); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2865 | hba_cg->default_groups[0] = &alua_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2866 | hba_cg->default_groups[1] = NULL; |
| 2867 | /* |
| 2868 | * Add ALUA Logical Unit Group and Target Port Group ConfigFS |
| 2869 | * groups under /sys/kernel/config/target/core/alua/ |
| 2870 | */ |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2871 | alua_cg = &alua_group; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2872 | alua_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2873 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2874 | if (!alua_cg->default_groups) { |
| 2875 | pr_err("Unable to allocate alua_cg->default_groups\n"); |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2876 | ret = -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2877 | goto out_global; |
| 2878 | } |
| 2879 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2880 | config_group_init_type_name(&alua_lu_gps_group, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2881 | "lu_gps", &target_core_alua_lu_gps_cit); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2882 | alua_cg->default_groups[0] = &alua_lu_gps_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2883 | alua_cg->default_groups[1] = NULL; |
| 2884 | /* |
| 2885 | * Add core/alua/lu_gps/default_lu_gp |
| 2886 | */ |
| 2887 | lu_gp = core_alua_allocate_lu_gp("default_lu_gp", 1); |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2888 | if (IS_ERR(lu_gp)) { |
| 2889 | ret = -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2890 | goto out_global; |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2891 | } |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2892 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2893 | lu_gp_cg = &alua_lu_gps_group; |
Sebastian Andrzej Siewior | 13f6a91 | 2012-11-27 18:54:21 +0100 | [diff] [blame] | 2894 | lu_gp_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2, |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2895 | GFP_KERNEL); |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2896 | if (!lu_gp_cg->default_groups) { |
| 2897 | pr_err("Unable to allocate lu_gp_cg->default_groups\n"); |
Peter Senna Tschudin | 37bb789 | 2012-09-17 20:05:33 +0200 | [diff] [blame] | 2898 | ret = -ENOMEM; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2899 | goto out_global; |
| 2900 | } |
| 2901 | |
| 2902 | config_group_init_type_name(&lu_gp->lu_gp_group, "default_lu_gp", |
| 2903 | &target_core_alua_lu_gp_cit); |
| 2904 | lu_gp_cg->default_groups[0] = &lu_gp->lu_gp_group; |
| 2905 | lu_gp_cg->default_groups[1] = NULL; |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2906 | default_lu_gp = lu_gp; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2907 | /* |
| 2908 | * Register the target_core_mod subsystem with configfs. |
| 2909 | */ |
| 2910 | ret = configfs_register_subsystem(subsys); |
| 2911 | if (ret < 0) { |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2912 | pr_err("Error %d while registering subsystem %s\n", |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2913 | ret, subsys->su_group.cg_item.ci_namebuf); |
| 2914 | goto out_global; |
| 2915 | } |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2916 | pr_debug("TARGET_CORE[0]: Initialized ConfigFS Fabric" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2917 | " Infrastructure: "TARGET_CORE_CONFIGFS_VERSION" on %s/%s" |
| 2918 | " on "UTS_RELEASE"\n", utsname()->sysname, utsname()->machine); |
| 2919 | /* |
| 2920 | * Register built-in RAMDISK subsystem logic for virtual LUN 0 |
| 2921 | */ |
| 2922 | ret = rd_module_init(); |
| 2923 | if (ret < 0) |
| 2924 | goto out; |
| 2925 | |
Roland Dreier | 0d0f9df | 2012-10-31 09:16:44 -0700 | [diff] [blame] | 2926 | ret = core_dev_setup_virtual_lun0(); |
| 2927 | if (ret < 0) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2928 | goto out; |
| 2929 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2930 | return 0; |
| 2931 | |
| 2932 | out: |
| 2933 | configfs_unregister_subsystem(subsys); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2934 | core_dev_release_virtual_lun0(); |
| 2935 | rd_module_exit(); |
| 2936 | out_global: |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2937 | if (default_lu_gp) { |
| 2938 | core_alua_free_lu_gp(default_lu_gp); |
| 2939 | default_lu_gp = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2940 | } |
| 2941 | if (lu_gp_cg) |
| 2942 | kfree(lu_gp_cg->default_groups); |
| 2943 | if (alua_cg) |
| 2944 | kfree(alua_cg->default_groups); |
| 2945 | if (hba_cg) |
| 2946 | kfree(hba_cg->default_groups); |
| 2947 | kfree(target_cg->default_groups); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2948 | release_se_kmem_caches(); |
| 2949 | return ret; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2950 | } |
| 2951 | |
Axel Lin | 54550fa | 2011-03-14 04:06:09 -0700 | [diff] [blame] | 2952 | static void __exit target_core_exit_configfs(void) |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2953 | { |
| 2954 | struct configfs_subsystem *subsys; |
| 2955 | struct config_group *hba_cg, *alua_cg, *lu_gp_cg; |
| 2956 | struct config_item *item; |
| 2957 | int i; |
| 2958 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2959 | subsys = target_core_subsystem[0]; |
| 2960 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2961 | lu_gp_cg = &alua_lu_gps_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2962 | for (i = 0; lu_gp_cg->default_groups[i]; i++) { |
| 2963 | item = &lu_gp_cg->default_groups[i]->cg_item; |
| 2964 | lu_gp_cg->default_groups[i] = NULL; |
| 2965 | config_item_put(item); |
| 2966 | } |
| 2967 | kfree(lu_gp_cg->default_groups); |
Nicholas Bellinger | 7c2bf6e | 2011-02-09 15:34:53 -0800 | [diff] [blame] | 2968 | lu_gp_cg->default_groups = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2969 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2970 | alua_cg = &alua_group; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2971 | for (i = 0; alua_cg->default_groups[i]; i++) { |
| 2972 | item = &alua_cg->default_groups[i]->cg_item; |
| 2973 | alua_cg->default_groups[i] = NULL; |
| 2974 | config_item_put(item); |
| 2975 | } |
| 2976 | kfree(alua_cg->default_groups); |
Nicholas Bellinger | 7c2bf6e | 2011-02-09 15:34:53 -0800 | [diff] [blame] | 2977 | alua_cg->default_groups = NULL; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2978 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2979 | hba_cg = &target_core_hbagroup; |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2980 | for (i = 0; hba_cg->default_groups[i]; i++) { |
| 2981 | item = &hba_cg->default_groups[i]->cg_item; |
| 2982 | hba_cg->default_groups[i] = NULL; |
| 2983 | config_item_put(item); |
| 2984 | } |
| 2985 | kfree(hba_cg->default_groups); |
Nicholas Bellinger | 7c2bf6e | 2011-02-09 15:34:53 -0800 | [diff] [blame] | 2986 | hba_cg->default_groups = NULL; |
| 2987 | /* |
| 2988 | * We expect subsys->su_group.default_groups to be released |
| 2989 | * by configfs subsystem provider logic.. |
| 2990 | */ |
| 2991 | configfs_unregister_subsystem(subsys); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2992 | kfree(subsys->su_group.default_groups); |
| 2993 | |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 2994 | core_alua_free_lu_gp(default_lu_gp); |
| 2995 | default_lu_gp = NULL; |
Nicholas Bellinger | 7c2bf6e | 2011-02-09 15:34:53 -0800 | [diff] [blame] | 2996 | |
Andy Grover | 6708bb2 | 2011-06-08 10:36:43 -0700 | [diff] [blame] | 2997 | pr_debug("TARGET_CORE[0]: Released ConfigFS Fabric" |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 2998 | " Infrastructure\n"); |
| 2999 | |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 3000 | core_dev_release_virtual_lun0(); |
| 3001 | rd_module_exit(); |
Andy Grover | e3d6f90 | 2011-07-19 08:55:10 +0000 | [diff] [blame] | 3002 | release_se_kmem_caches(); |
Nicholas Bellinger | c66ac9d | 2010-12-17 11:11:26 -0800 | [diff] [blame] | 3003 | } |
| 3004 | |
| 3005 | MODULE_DESCRIPTION("Target_Core_Mod/ConfigFS"); |
| 3006 | MODULE_AUTHOR("nab@Linux-iSCSI.org"); |
| 3007 | MODULE_LICENSE("GPL"); |
| 3008 | |
| 3009 | module_init(target_core_init_configfs); |
| 3010 | module_exit(target_core_exit_configfs); |