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