drivers/target/target_core_fabric_configfs.c

   1 /*******************************************************************************
   2 * Filename: target_core_fabric_configfs.c
   3  *
   4  * This file contains generic fabric module configfs infrastructure for
   5  * TCM v4.x code
   6  *
   7  * Copyright (c) 2010,2011 Rising Tide Systems
   8  * Copyright (c) 2010,2011 Linux-iSCSI.org
   9  *
  10  * Copyright (c) Nicholas A. Bellinger <nab@linux-iscsi.org>
  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>
  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/syscalls.h>
  36 #include <linux/configfs.h>
  37
  38 #include <target/target_core_base.h>
  39 #include <target/target_core_device.h>
  40 #include <target/target_core_tpg.h>
  41 #include <target/target_core_transport.h>
  42 #include <target/target_core_fabric_ops.h>
  43 #include <target/target_core_fabric_configfs.h>
  44 #include <target/target_core_configfs.h>
  45 #include <target/configfs_macros.h>
  46
  47 #include "target_core_alua.h"
  48 #include "target_core_hba.h"
  49 #include "target_core_pr.h"
  50 #include "target_core_stat.h"
  51
  52 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs)              \
  53 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
  54 {                                                                       \
  55         struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
  56         struct config_item_type *cit = &tfc->tfc_##_name##_cit;         \
  57                                                                         \
  58         cit->ct_item_ops = _item_ops;                                   \
  59         cit->ct_group_ops = _group_ops;                                 \
  60         cit->ct_attrs = _attrs;                                         \
  61         cit->ct_owner = tf->tf_module;                                  \
  62         pr_debug("Setup generic %s\n", __stringify(_name));             \
  63 }
  64
  65 /* Start of tfc_tpg_mappedlun_cit */
  66
  67 static int target_fabric_mappedlun_link(
  68         struct config_item *lun_acl_ci,
  69         struct config_item *lun_ci)
  70 {
  71         struct se_dev_entry *deve;
  72         struct se_lun *lun = container_of(to_config_group(lun_ci),
  73                         struct se_lun, lun_group);
  74         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
  75                         struct se_lun_acl, se_lun_group);
  76         struct se_portal_group *se_tpg;
  77         struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
  78         int ret = 0, lun_access;
  79         /*
  80          * Ensure that the source port exists
  81          */
  82         if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
  83                 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
  84                                 "_tpg does not exist\n");
  85                 return -EINVAL;
  86         }
  87         se_tpg = lun->lun_sep->sep_tpg;
  88
  89         nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
  90         tpg_ci = &nacl_ci->ci_group->cg_item;
  91         wwn_ci = &tpg_ci->ci_group->cg_item;
  92         tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
  93         wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
  94         /*
  95          * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
  96          */
  97         if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
  98                 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
  99                         config_item_name(wwn_ci));
 100                 return -EINVAL;
 101         }
 102         if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
 103                 pr_err("Illegal Initiator ACL Symlink outside of %s"
 104                         " TPGT: %s\n", config_item_name(wwn_ci),
 105                         config_item_name(tpg_ci));
 106                 return -EINVAL;
 107         }
 108         /*
 109          * If this struct se_node_acl was dynamically generated with
 110          * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
 111          * which be will write protected (READ-ONLY) when
 112          * tpg_1/attrib/demo_mode_write_protect=1
 113          */
 114         spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
 115         deve = &lacl->se_lun_nacl->device_list[lacl->mapped_lun];
 116         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
 117                 lun_access = deve->lun_flags;
 118         else
 119                 lun_access =
 120                         (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
 121                                 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
 122                                            TRANSPORT_LUNFLAGS_READ_WRITE;
 123         spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
 124         /*
 125          * Determine the actual mapped LUN value user wants..
 126          *
 127          * This value is what the SCSI Initiator actually sees the
 128          * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
 129          */
 130         ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
 131                         lun->unpacked_lun, lun_access);
 132
 133         return (ret < 0) ? -EINVAL : 0;
 134 }
 135
 136 static int target_fabric_mappedlun_unlink(
 137         struct config_item *lun_acl_ci,
 138         struct config_item *lun_ci)
 139 {
 140         struct se_lun *lun;
 141         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
 142                         struct se_lun_acl, se_lun_group);
 143         struct se_node_acl *nacl = lacl->se_lun_nacl;
 144         struct se_dev_entry *deve = &nacl->device_list[lacl->mapped_lun];
 145         struct se_portal_group *se_tpg;
 146         /*
 147          * Determine if the underlying MappedLUN has already been released..
 148          */
 149         if (!deve->se_lun)
 150                 return 0;
 151
 152         lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
 153         se_tpg = lun->lun_sep->sep_tpg;
 154
 155         core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
 156         return 0;
 157 }
 158
 159 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
 160 #define TCM_MAPPEDLUN_ATTR(_name, _mode)                                \
 161 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
 162         __CONFIGFS_EATTR(_name, _mode,                                  \
 163         target_fabric_mappedlun_show_##_name,                           \
 164         target_fabric_mappedlun_store_##_name);
 165
 166 static ssize_t target_fabric_mappedlun_show_write_protect(
 167         struct se_lun_acl *lacl,
 168         char *page)
 169 {
 170         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 171         struct se_dev_entry *deve;
 172         ssize_t len;
 173
 174         spin_lock_irq(&se_nacl->device_list_lock);
 175         deve = &se_nacl->device_list[lacl->mapped_lun];
 176         len = sprintf(page, "%d\n",
 177                         (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
 178                         1 : 0);
 179         spin_unlock_irq(&se_nacl->device_list_lock);
 180
 181         return len;
 182 }
 183
 184 static ssize_t target_fabric_mappedlun_store_write_protect(
 185         struct se_lun_acl *lacl,
 186         const char *page,
 187         size_t count)
 188 {
 189         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 190         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 191         unsigned long op;
 192
 193         if (strict_strtoul(page, 0, &op))
 194                 return -EINVAL;
 195
 196         if ((op != 1) && (op != 0))
 197                 return -EINVAL;
 198
 199         core_update_device_list_access(lacl->mapped_lun, (op) ?
 200                         TRANSPORT_LUNFLAGS_READ_ONLY :
 201                         TRANSPORT_LUNFLAGS_READ_WRITE,
 202                         lacl->se_lun_nacl);
 203
 204         pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
 205                 " Mapped LUN: %u Write Protect bit to %s\n",
 206                 se_tpg->se_tpg_tfo->get_fabric_name(),
 207                 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
 208
 209         return count;
 210
 211 }
 212
 213 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
 214
 215 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
 216
 217 static void target_fabric_mappedlun_release(struct config_item *item)
 218 {
 219         struct se_lun_acl *lacl = container_of(to_config_group(item),
 220                                 struct se_lun_acl, se_lun_group);
 221         struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
 222
 223         core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
 224 }
 225
 226 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
 227         &target_fabric_mappedlun_write_protect.attr,
 228         NULL,
 229 };
 230
 231 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
 232         .release                = target_fabric_mappedlun_release,
 233         .show_attribute         = target_fabric_mappedlun_attr_show,
 234         .store_attribute        = target_fabric_mappedlun_attr_store,
 235         .allow_link             = target_fabric_mappedlun_link,
 236         .drop_link              = target_fabric_mappedlun_unlink,
 237 };
 238
 239 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
 240                 target_fabric_mappedlun_attrs);
 241
 242 /* End of tfc_tpg_mappedlun_cit */
 243
 244 /* Start of tfc_tpg_mappedlun_port_cit */
 245
 246 static struct config_group *target_core_mappedlun_stat_mkdir(
 247         struct config_group *group,
 248         const char *name)
 249 {
 250         return ERR_PTR(-ENOSYS);
 251 }
 252
 253 static void target_core_mappedlun_stat_rmdir(
 254         struct config_group *group,
 255         struct config_item *item)
 256 {
 257         return;
 258 }
 259
 260 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
 261         .make_group             = target_core_mappedlun_stat_mkdir,
 262         .drop_item              = target_core_mappedlun_stat_rmdir,
 263 };
 264
 265 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
 266                 NULL);
 267
 268 /* End of tfc_tpg_mappedlun_port_cit */
 269
 270 /* Start of tfc_tpg_nacl_attrib_cit */
 271
 272 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
 273
 274 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
 275         .show_attribute         = target_fabric_nacl_attrib_attr_show,
 276         .store_attribute        = target_fabric_nacl_attrib_attr_store,
 277 };
 278
 279 TF_CIT_SETUP(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, NULL);
 280
 281 /* End of tfc_tpg_nacl_attrib_cit */
 282
 283 /* Start of tfc_tpg_nacl_auth_cit */
 284
 285 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
 286
 287 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
 288         .show_attribute         = target_fabric_nacl_auth_attr_show,
 289         .store_attribute        = target_fabric_nacl_auth_attr_store,
 290 };
 291
 292 TF_CIT_SETUP(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, NULL);
 293
 294 /* End of tfc_tpg_nacl_auth_cit */
 295
 296 /* Start of tfc_tpg_nacl_param_cit */
 297
 298 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
 299
 300 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
 301         .show_attribute         = target_fabric_nacl_param_attr_show,
 302         .store_attribute        = target_fabric_nacl_param_attr_store,
 303 };
 304
 305 TF_CIT_SETUP(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, NULL);
 306
 307 /* End of tfc_tpg_nacl_param_cit */
 308
 309 /* Start of tfc_tpg_nacl_base_cit */
 310
 311 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
 312
 313 static struct config_group *target_fabric_make_mappedlun(
 314         struct config_group *group,
 315         const char *name)
 316 {
 317         struct se_node_acl *se_nacl = container_of(group,
 318                         struct se_node_acl, acl_group);
 319         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 320         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 321         struct se_lun_acl *lacl;
 322         struct config_item *acl_ci;
 323         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 324         char *buf;
 325         unsigned long mapped_lun;
 326         int ret = 0;
 327
 328         acl_ci = &group->cg_item;
 329         if (!acl_ci) {
 330                 pr_err("Unable to locatel acl_ci\n");
 331                 return NULL;
 332         }
 333
 334         buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
 335         if (!buf) {
 336                 pr_err("Unable to allocate memory for name buf\n");
 337                 return ERR_PTR(-ENOMEM);
 338         }
 339         snprintf(buf, strlen(name) + 1, "%s", name);
 340         /*
 341          * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
 342          */
 343         if (strstr(buf, "lun_") != buf) {
 344                 pr_err("Unable to locate \"lun_\" from buf: %s"
 345                         " name: %s\n", buf, name);
 346                 ret = -EINVAL;
 347                 goto out;
 348         }
 349         /*
 350          * Determine the Mapped LUN value.  This is what the SCSI Initiator
 351          * Port will actually see.
 352          */
 353         if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
 354                 ret = -EINVAL;
 355                 goto out;
 356         }
 357
 358         lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun,
 359                         config_item_name(acl_ci), &ret);
 360         if (!lacl) {
 361                 ret = -EINVAL;
 362                 goto out;
 363         }
 364
 365         lacl_cg = &lacl->se_lun_group;
 366         lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
 367                                 GFP_KERNEL);
 368         if (!lacl_cg->default_groups) {
 369                 pr_err("Unable to allocate lacl_cg->default_groups\n");
 370                 ret = -ENOMEM;
 371                 goto out;
 372         }
 373
 374         config_group_init_type_name(&lacl->se_lun_group, name,
 375                         &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
 376         config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
 377                         "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
 378         lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
 379         lacl_cg->default_groups[1] = NULL;
 380
 381         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 382         ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
 383                                 GFP_KERNEL);
 384         if (!ml_stat_grp->default_groups) {
 385                 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
 386                 ret = -ENOMEM;
 387                 goto out;
 388         }
 389         target_stat_setup_mappedlun_default_groups(lacl);
 390
 391         kfree(buf);
 392         return &lacl->se_lun_group;
 393 out:
 394         if (lacl_cg)
 395                 kfree(lacl_cg->default_groups);
 396         kfree(buf);
 397         return ERR_PTR(ret);
 398 }
 399
 400 static void target_fabric_drop_mappedlun(
 401         struct config_group *group,
 402         struct config_item *item)
 403 {
 404         struct se_lun_acl *lacl = container_of(to_config_group(item),
 405                         struct se_lun_acl, se_lun_group);
 406         struct config_item *df_item;
 407         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 408         int i;
 409
 410         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 411         for (i = 0; ml_stat_grp->default_groups[i]; i++) {
 412                 df_item = &ml_stat_grp->default_groups[i]->cg_item;
 413                 ml_stat_grp->default_groups[i] = NULL;
 414                 config_item_put(df_item);
 415         }
 416         kfree(ml_stat_grp->default_groups);
 417
 418         lacl_cg = &lacl->se_lun_group;
 419         for (i = 0; lacl_cg->default_groups[i]; i++) {
 420                 df_item = &lacl_cg->default_groups[i]->cg_item;
 421                 lacl_cg->default_groups[i] = NULL;
 422                 config_item_put(df_item);
 423         }
 424         kfree(lacl_cg->default_groups);
 425
 426         config_item_put(item);
 427 }
 428
 429 static void target_fabric_nacl_base_release(struct config_item *item)
 430 {
 431         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 432                         struct se_node_acl, acl_group);
 433         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 434         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 435
 436         tf->tf_ops.fabric_drop_nodeacl(se_nacl);
 437 }
 438
 439 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
 440         .release                = target_fabric_nacl_base_release,
 441         .show_attribute         = target_fabric_nacl_base_attr_show,
 442         .store_attribute        = target_fabric_nacl_base_attr_store,
 443 };
 444
 445 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
 446         .make_group             = target_fabric_make_mappedlun,
 447         .drop_item              = target_fabric_drop_mappedlun,
 448 };
 449
 450 TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
 451                 &target_fabric_nacl_base_group_ops, NULL);
 452
 453 /* End of tfc_tpg_nacl_base_cit */
 454
 455 /* Start of tfc_node_fabric_stats_cit */
 456 /*
 457  * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
 458  * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
 459  */
 460 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
 461
 462 /* End of tfc_wwn_fabric_stats_cit */
 463
 464 /* Start of tfc_tpg_nacl_cit */
 465
 466 static struct config_group *target_fabric_make_nodeacl(
 467         struct config_group *group,
 468         const char *name)
 469 {
 470         struct se_portal_group *se_tpg = container_of(group,
 471                         struct se_portal_group, tpg_acl_group);
 472         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 473         struct se_node_acl *se_nacl;
 474         struct config_group *nacl_cg;
 475
 476         if (!tf->tf_ops.fabric_make_nodeacl) {
 477                 pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
 478                 return ERR_PTR(-ENOSYS);
 479         }
 480
 481         se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
 482         if (IS_ERR(se_nacl))
 483                 return ERR_CAST(se_nacl);
 484
 485         nacl_cg = &se_nacl->acl_group;
 486         nacl_cg->default_groups = se_nacl->acl_default_groups;
 487         nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
 488         nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
 489         nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
 490         nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
 491         nacl_cg->default_groups[4] = NULL;
 492
 493         config_group_init_type_name(&se_nacl->acl_group, name,
 494                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
 495         config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
 496                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
 497         config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
 498                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
 499         config_group_init_type_name(&se_nacl->acl_param_group, "param",
 500                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
 501         config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
 502                         "fabric_statistics",
 503                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
 504
 505         return &se_nacl->acl_group;
 506 }
 507
 508 static void target_fabric_drop_nodeacl(
 509         struct config_group *group,
 510         struct config_item *item)
 511 {
 512         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 513                         struct se_node_acl, acl_group);
 514         struct config_item *df_item;
 515         struct config_group *nacl_cg;
 516         int i;
 517
 518         nacl_cg = &se_nacl->acl_group;
 519         for (i = 0; nacl_cg->default_groups[i]; i++) {
 520                 df_item = &nacl_cg->default_groups[i]->cg_item;
 521                 nacl_cg->default_groups[i] = NULL;
 522                 config_item_put(df_item);
 523         }
 524         /*
 525          * struct se_node_acl free is done in target_fabric_nacl_base_release()
 526          */
 527         config_item_put(item);
 528 }
 529
 530 static struct configfs_group_operations target_fabric_nacl_group_ops = {
 531         .make_group     = target_fabric_make_nodeacl,
 532         .drop_item      = target_fabric_drop_nodeacl,
 533 };
 534
 535 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
 536
 537 /* End of tfc_tpg_nacl_cit */
 538
 539 /* Start of tfc_tpg_np_base_cit */
 540
 541 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
 542
 543 static void target_fabric_np_base_release(struct config_item *item)
 544 {
 545         struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
 546                                 struct se_tpg_np, tpg_np_group);
 547         struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
 548         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 549
 550         tf->tf_ops.fabric_drop_np(se_tpg_np);
 551 }
 552
 553 static struct configfs_item_operations target_fabric_np_base_item_ops = {
 554         .release                = target_fabric_np_base_release,
 555         .show_attribute         = target_fabric_np_base_attr_show,
 556         .store_attribute        = target_fabric_np_base_attr_store,
 557 };
 558
 559 TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
 560
 561 /* End of tfc_tpg_np_base_cit */
 562
 563 /* Start of tfc_tpg_np_cit */
 564
 565 static struct config_group *target_fabric_make_np(
 566         struct config_group *group,
 567         const char *name)
 568 {
 569         struct se_portal_group *se_tpg = container_of(group,
 570                                 struct se_portal_group, tpg_np_group);
 571         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 572         struct se_tpg_np *se_tpg_np;
 573
 574         if (!tf->tf_ops.fabric_make_np) {
 575                 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
 576                 return ERR_PTR(-ENOSYS);
 577         }
 578
 579         se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
 580         if (!se_tpg_np || IS_ERR(se_tpg_np))
 581                 return ERR_PTR(-EINVAL);
 582
 583         se_tpg_np->tpg_np_parent = se_tpg;
 584         config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
 585                         &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
 586
 587         return &se_tpg_np->tpg_np_group;
 588 }
 589
 590 static void target_fabric_drop_np(
 591         struct config_group *group,
 592         struct config_item *item)
 593 {
 594         /*
 595          * struct se_tpg_np is released via target_fabric_np_base_release()
 596          */
 597         config_item_put(item);
 598 }
 599
 600 static struct configfs_group_operations target_fabric_np_group_ops = {
 601         .make_group     = &target_fabric_make_np,
 602         .drop_item      = &target_fabric_drop_np,
 603 };
 604
 605 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
 606
 607 /* End of tfc_tpg_np_cit */
 608
 609 /* Start of tfc_tpg_port_cit */
 610
 611 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
 612 #define TCM_PORT_ATTR(_name, _mode)                                     \
 613 static struct target_fabric_port_attribute target_fabric_port_##_name = \
 614         __CONFIGFS_EATTR(_name, _mode,                                  \
 615         target_fabric_port_show_attr_##_name,                           \
 616         target_fabric_port_store_attr_##_name);
 617
 618 #define TCM_PORT_ATTOR_RO(_name)                                        \
 619         __CONFIGFS_EATTR_RO(_name,                                      \
 620         target_fabric_port_show_attr_##_name);
 621
 622 /*
 623  * alua_tg_pt_gp
 624  */
 625 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
 626         struct se_lun *lun,
 627         char *page)
 628 {
 629         if (!lun || !lun->lun_sep)
 630                 return -ENODEV;
 631
 632         return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
 633 }
 634
 635 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
 636         struct se_lun *lun,
 637         const char *page,
 638         size_t count)
 639 {
 640         if (!lun || !lun->lun_sep)
 641                 return -ENODEV;
 642
 643         return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
 644 }
 645
 646 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
 647
 648 /*
 649  * alua_tg_pt_offline
 650  */
 651 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
 652         struct se_lun *lun,
 653         char *page)
 654 {
 655         if (!lun || !lun->lun_sep)
 656                 return -ENODEV;
 657
 658         return core_alua_show_offline_bit(lun, page);
 659 }
 660
 661 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
 662         struct se_lun *lun,
 663         const char *page,
 664         size_t count)
 665 {
 666         if (!lun || !lun->lun_sep)
 667                 return -ENODEV;
 668
 669         return core_alua_store_offline_bit(lun, page, count);
 670 }
 671
 672 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
 673
 674 /*
 675  * alua_tg_pt_status
 676  */
 677 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
 678         struct se_lun *lun,
 679         char *page)
 680 {
 681         if (!lun || !lun->lun_sep)
 682                 return -ENODEV;
 683
 684         return core_alua_show_secondary_status(lun, page);
 685 }
 686
 687 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
 688         struct se_lun *lun,
 689         const char *page,
 690         size_t count)
 691 {
 692         if (!lun || !lun->lun_sep)
 693                 return -ENODEV;
 694
 695         return core_alua_store_secondary_status(lun, page, count);
 696 }
 697
 698 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
 699
 700 /*
 701  * alua_tg_pt_write_md
 702  */
 703 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
 704         struct se_lun *lun,
 705         char *page)
 706 {
 707         if (!lun || !lun->lun_sep)
 708                 return -ENODEV;
 709
 710         return core_alua_show_secondary_write_metadata(lun, page);
 711 }
 712
 713 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
 714         struct se_lun *lun,
 715         const char *page,
 716         size_t count)
 717 {
 718         if (!lun || !lun->lun_sep)
 719                 return -ENODEV;
 720
 721         return core_alua_store_secondary_write_metadata(lun, page, count);
 722 }
 723
 724 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
 725
 726
 727 static struct configfs_attribute *target_fabric_port_attrs[] = {
 728         &target_fabric_port_alua_tg_pt_gp.attr,
 729         &target_fabric_port_alua_tg_pt_offline.attr,
 730         &target_fabric_port_alua_tg_pt_status.attr,
 731         &target_fabric_port_alua_tg_pt_write_md.attr,
 732         NULL,
 733 };
 734
 735 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
 736
 737 static int target_fabric_port_link(
 738         struct config_item *lun_ci,
 739         struct config_item *se_dev_ci)
 740 {
 741         struct config_item *tpg_ci;
 742         struct se_device *dev;
 743         struct se_lun *lun = container_of(to_config_group(lun_ci),
 744                                 struct se_lun, lun_group);
 745         struct se_lun *lun_p;
 746         struct se_portal_group *se_tpg;
 747         struct se_subsystem_dev *se_dev = container_of(
 748                                 to_config_group(se_dev_ci), struct se_subsystem_dev,
 749                                 se_dev_group);
 750         struct target_fabric_configfs *tf;
 751         int ret;
 752
 753         tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
 754         se_tpg = container_of(to_config_group(tpg_ci),
 755                                 struct se_portal_group, tpg_group);
 756         tf = se_tpg->se_tpg_wwn->wwn_tf;
 757
 758         if (lun->lun_se_dev !=  NULL) {
 759                 pr_err("Port Symlink already exists\n");
 760                 return -EEXIST;
 761         }
 762
 763         dev = se_dev->se_dev_ptr;
 764         if (!dev) {
 765                 pr_err("Unable to locate struct se_device pointer from"
 766                         " %s\n", config_item_name(se_dev_ci));
 767                 ret = -ENODEV;
 768                 goto out;
 769         }
 770
 771         lun_p = core_dev_add_lun(se_tpg, dev->se_hba, dev,
 772                                 lun->unpacked_lun);
 773         if (IS_ERR(lun_p) || !lun_p) {
 774                 pr_err("core_dev_add_lun() failed\n");
 775                 ret = -EINVAL;
 776                 goto out;
 777         }
 778
 779         if (tf->tf_ops.fabric_post_link) {
 780                 /*
 781                  * Call the optional fabric_post_link() to allow a
 782                  * fabric module to setup any additional state once
 783                  * core_dev_add_lun() has been called..
 784                  */
 785                 tf->tf_ops.fabric_post_link(se_tpg, lun);
 786         }
 787
 788         return 0;
 789 out:
 790         return ret;
 791 }
 792
 793 static int target_fabric_port_unlink(
 794         struct config_item *lun_ci,
 795         struct config_item *se_dev_ci)
 796 {
 797         struct se_lun *lun = container_of(to_config_group(lun_ci),
 798                                 struct se_lun, lun_group);
 799         struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
 800         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 801
 802         if (tf->tf_ops.fabric_pre_unlink) {
 803                 /*
 804                  * Call the optional fabric_pre_unlink() to allow a
 805                  * fabric module to release any additional stat before
 806                  * core_dev_del_lun() is called.
 807                 */
 808                 tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
 809         }
 810
 811         core_dev_del_lun(se_tpg, lun->unpacked_lun);
 812         return 0;
 813 }
 814
 815 static struct configfs_item_operations target_fabric_port_item_ops = {
 816         .show_attribute         = target_fabric_port_attr_show,
 817         .store_attribute        = target_fabric_port_attr_store,
 818         .allow_link             = target_fabric_port_link,
 819         .drop_link              = target_fabric_port_unlink,
 820 };
 821
 822 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
 823
 824 /* End of tfc_tpg_port_cit */
 825
 826 /* Start of tfc_tpg_port_stat_cit */
 827
 828 static struct config_group *target_core_port_stat_mkdir(
 829         struct config_group *group,
 830         const char *name)
 831 {
 832         return ERR_PTR(-ENOSYS);
 833 }
 834
 835 static void target_core_port_stat_rmdir(
 836         struct config_group *group,
 837         struct config_item *item)
 838 {
 839         return;
 840 }
 841
 842 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
 843         .make_group             = target_core_port_stat_mkdir,
 844         .drop_item              = target_core_port_stat_rmdir,
 845 };
 846
 847 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
 848
 849 /* End of tfc_tpg_port_stat_cit */
 850
 851 /* Start of tfc_tpg_lun_cit */
 852
 853 static struct config_group *target_fabric_make_lun(
 854         struct config_group *group,
 855         const char *name)
 856 {
 857         struct se_lun *lun;
 858         struct se_portal_group *se_tpg = container_of(group,
 859                         struct se_portal_group, tpg_lun_group);
 860         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 861         struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
 862         unsigned long unpacked_lun;
 863         int errno;
 864
 865         if (strstr(name, "lun_") != name) {
 866                 pr_err("Unable to locate \'_\" in"
 867                                 " \"lun_$LUN_NUMBER\"\n");
 868                 return ERR_PTR(-EINVAL);
 869         }
 870         if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
 871                 return ERR_PTR(-EINVAL);
 872
 873         lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
 874         if (!lun)
 875                 return ERR_PTR(-EINVAL);
 876
 877         lun_cg = &lun->lun_group;
 878         lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
 879                                 GFP_KERNEL);
 880         if (!lun_cg->default_groups) {
 881                 pr_err("Unable to allocate lun_cg->default_groups\n");
 882                 return ERR_PTR(-ENOMEM);
 883         }
 884
 885         config_group_init_type_name(&lun->lun_group, name,
 886                         &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
 887         config_group_init_type_name(&lun->port_stat_grps.stat_group,
 888                         "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
 889         lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
 890         lun_cg->default_groups[1] = NULL;
 891
 892         port_stat_grp = &lun->port_stat_grps.stat_group;
 893         port_stat_grp->default_groups =  kzalloc(sizeof(struct config_group) * 3,
 894                                 GFP_KERNEL);
 895         if (!port_stat_grp->default_groups) {
 896                 pr_err("Unable to allocate port_stat_grp->default_groups\n");
 897                 errno = -ENOMEM;
 898                 goto out;
 899         }
 900         target_stat_setup_port_default_groups(lun);
 901
 902         return &lun->lun_group;
 903 out:
 904         if (lun_cg)
 905                 kfree(lun_cg->default_groups);
 906         return ERR_PTR(errno);
 907 }
 908
 909 static void target_fabric_drop_lun(
 910         struct config_group *group,
 911         struct config_item *item)
 912 {
 913         struct se_lun *lun = container_of(to_config_group(item),
 914                                 struct se_lun, lun_group);
 915         struct config_item *df_item;
 916         struct config_group *lun_cg, *port_stat_grp;
 917         int i;
 918
 919         port_stat_grp = &lun->port_stat_grps.stat_group;
 920         for (i = 0; port_stat_grp->default_groups[i]; i++) {
 921                 df_item = &port_stat_grp->default_groups[i]->cg_item;
 922                 port_stat_grp->default_groups[i] = NULL;
 923                 config_item_put(df_item);
 924         }
 925         kfree(port_stat_grp->default_groups);
 926
 927         lun_cg = &lun->lun_group;
 928         for (i = 0; lun_cg->default_groups[i]; i++) {
 929                 df_item = &lun_cg->default_groups[i]->cg_item;
 930                 lun_cg->default_groups[i] = NULL;
 931                 config_item_put(df_item);
 932         }
 933         kfree(lun_cg->default_groups);
 934
 935         config_item_put(item);
 936 }
 937
 938 static struct configfs_group_operations target_fabric_lun_group_ops = {
 939         .make_group     = &target_fabric_make_lun,
 940         .drop_item      = &target_fabric_drop_lun,
 941 };
 942
 943 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
 944
 945 /* End of tfc_tpg_lun_cit */
 946
 947 /* Start of tfc_tpg_attrib_cit */
 948
 949 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
 950
 951 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
 952         .show_attribute         = target_fabric_tpg_attrib_attr_show,
 953         .store_attribute        = target_fabric_tpg_attrib_attr_store,
 954 };
 955
 956 TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
 957
 958 /* End of tfc_tpg_attrib_cit */
 959
 960 /* Start of tfc_tpg_param_cit */
 961
 962 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
 963
 964 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
 965         .show_attribute         = target_fabric_tpg_param_attr_show,
 966         .store_attribute        = target_fabric_tpg_param_attr_store,
 967 };
 968
 969 TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
 970
 971 /* End of tfc_tpg_param_cit */
 972
 973 /* Start of tfc_tpg_base_cit */
 974 /*
 975  * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
 976  */
 977 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
 978
 979 static void target_fabric_tpg_release(struct config_item *item)
 980 {
 981         struct se_portal_group *se_tpg = container_of(to_config_group(item),
 982                         struct se_portal_group, tpg_group);
 983         struct se_wwn *wwn = se_tpg->se_tpg_wwn;
 984         struct target_fabric_configfs *tf = wwn->wwn_tf;
 985
 986         tf->tf_ops.fabric_drop_tpg(se_tpg);
 987 }
 988
 989 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
 990         .release                = target_fabric_tpg_release,
 991         .show_attribute         = target_fabric_tpg_attr_show,
 992         .store_attribute        = target_fabric_tpg_attr_store,
 993 };
 994
 995 TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
 996
 997 /* End of tfc_tpg_base_cit */
 998
 999 /* Start of tfc_tpg_cit */
1000
1001 static struct config_group *target_fabric_make_tpg(
1002         struct config_group *group,
1003         const char *name)
1004 {
1005         struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1006         struct target_fabric_configfs *tf = wwn->wwn_tf;
1007         struct se_portal_group *se_tpg;
1008
1009         if (!tf->tf_ops.fabric_make_tpg) {
1010                 pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1011                 return ERR_PTR(-ENOSYS);
1012         }
1013
1014         se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1015         if (!se_tpg || IS_ERR(se_tpg))
1016                 return ERR_PTR(-EINVAL);
1017         /*
1018          * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1019          */
1020         se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1021         se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1022         se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1023         se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1024         se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1025         se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1026         se_tpg->tpg_group.default_groups[5] = NULL;
1027
1028         config_group_init_type_name(&se_tpg->tpg_group, name,
1029                         &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1030         config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1031                         &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1032         config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1033                         &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1034         config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1035                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1036         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1037                         &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1038         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1039                         &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1040
1041         return &se_tpg->tpg_group;
1042 }
1043
1044 static void target_fabric_drop_tpg(
1045         struct config_group *group,
1046         struct config_item *item)
1047 {
1048         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1049                                 struct se_portal_group, tpg_group);
1050         struct config_group *tpg_cg = &se_tpg->tpg_group;
1051         struct config_item *df_item;
1052         int i;
1053         /*
1054          * Release default groups, but do not release tpg_cg->default_groups
1055          * memory as it is statically allocated at se_tpg->tpg_default_groups.
1056          */
1057         for (i = 0; tpg_cg->default_groups[i]; i++) {
1058                 df_item = &tpg_cg->default_groups[i]->cg_item;
1059                 tpg_cg->default_groups[i] = NULL;
1060                 config_item_put(df_item);
1061         }
1062
1063         config_item_put(item);
1064 }
1065
1066 static void target_fabric_release_wwn(struct config_item *item)
1067 {
1068         struct se_wwn *wwn = container_of(to_config_group(item),
1069                                 struct se_wwn, wwn_group);
1070         struct target_fabric_configfs *tf = wwn->wwn_tf;
1071
1072         tf->tf_ops.fabric_drop_wwn(wwn);
1073 }
1074
1075 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1076         .release        = target_fabric_release_wwn,
1077 };
1078
1079 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1080         .make_group     = target_fabric_make_tpg,
1081         .drop_item      = target_fabric_drop_tpg,
1082 };
1083
1084 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1085                 NULL);
1086
1087 /* End of tfc_tpg_cit */
1088
1089 /* Start of tfc_wwn_fabric_stats_cit */
1090 /*
1091  * This is used as a placeholder for struct se_wwn->fabric_stat_group
1092  * to allow fabrics access to ->fabric_stat_group->default_groups[]
1093  */
1094 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1095
1096 /* End of tfc_wwn_fabric_stats_cit */
1097
1098 /* Start of tfc_wwn_cit */
1099
1100 static struct config_group *target_fabric_make_wwn(
1101         struct config_group *group,
1102         const char *name)
1103 {
1104         struct target_fabric_configfs *tf = container_of(group,
1105                                 struct target_fabric_configfs, tf_group);
1106         struct se_wwn *wwn;
1107
1108         if (!tf->tf_ops.fabric_make_wwn) {
1109                 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1110                 return ERR_PTR(-ENOSYS);
1111         }
1112
1113         wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1114         if (!wwn || IS_ERR(wwn))
1115                 return ERR_PTR(-EINVAL);
1116
1117         wwn->wwn_tf = tf;
1118         /*
1119          * Setup default groups from pre-allocated wwn->wwn_default_groups
1120          */
1121         wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1122         wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1123         wwn->wwn_group.default_groups[1] = NULL;
1124
1125         config_group_init_type_name(&wwn->wwn_group, name,
1126                         &TF_CIT_TMPL(tf)->tfc_tpg_cit);
1127         config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1128                         &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1129
1130         return &wwn->wwn_group;
1131 }
1132
1133 static void target_fabric_drop_wwn(
1134         struct config_group *group,
1135         struct config_item *item)
1136 {
1137         struct se_wwn *wwn = container_of(to_config_group(item),
1138                                 struct se_wwn, wwn_group);
1139         struct config_item *df_item;
1140         struct config_group *cg = &wwn->wwn_group;
1141         int i;
1142
1143         for (i = 0; cg->default_groups[i]; i++) {
1144                 df_item = &cg->default_groups[i]->cg_item;
1145                 cg->default_groups[i] = NULL;
1146                 config_item_put(df_item);
1147         }
1148
1149         config_item_put(item);
1150 }
1151
1152 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1153         .make_group     = target_fabric_make_wwn,
1154         .drop_item      = target_fabric_drop_wwn,
1155 };
1156 /*
1157  * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1158  */
1159 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1160
1161 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1162         .show_attribute         = target_fabric_wwn_attr_show,
1163         .store_attribute        = target_fabric_wwn_attr_store,
1164 };
1165
1166 TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1167
1168 /* End of tfc_wwn_cit */
1169
1170 /* Start of tfc_discovery_cit */
1171
1172 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1173                 tf_disc_group);
1174
1175 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1176         .show_attribute         = target_fabric_discovery_attr_show,
1177         .store_attribute        = target_fabric_discovery_attr_store,
1178 };
1179
1180 TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1181
1182 /* End of tfc_discovery_cit */
1183
1184 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1185 {
1186         target_fabric_setup_discovery_cit(tf);
1187         target_fabric_setup_wwn_cit(tf);
1188         target_fabric_setup_wwn_fabric_stats_cit(tf);
1189         target_fabric_setup_tpg_cit(tf);
1190         target_fabric_setup_tpg_base_cit(tf);
1191         target_fabric_setup_tpg_port_cit(tf);
1192         target_fabric_setup_tpg_port_stat_cit(tf);
1193         target_fabric_setup_tpg_lun_cit(tf);
1194         target_fabric_setup_tpg_np_cit(tf);
1195         target_fabric_setup_tpg_np_base_cit(tf);
1196         target_fabric_setup_tpg_attrib_cit(tf);
1197         target_fabric_setup_tpg_param_cit(tf);
1198         target_fabric_setup_tpg_nacl_cit(tf);
1199         target_fabric_setup_tpg_nacl_base_cit(tf);
1200         target_fabric_setup_tpg_nacl_attrib_cit(tf);
1201         target_fabric_setup_tpg_nacl_auth_cit(tf);
1202         target_fabric_setup_tpg_nacl_param_cit(tf);
1203         target_fabric_setup_tpg_nacl_stat_cit(tf);
1204         target_fabric_setup_tpg_mappedlun_cit(tf);
1205         target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1206
1207         return 0;
1208 }