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