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  * (c) Copyright 2010-2013 Datera, Inc.
   8  *
   9  * Nicholas A. Bellinger <nab@linux-iscsi.org>
  10 *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  ****************************************************************************/
  21
  22 #include <linux/module.h>
  23 #include <linux/moduleparam.h>
  24 #include <linux/utsname.h>
  25 #include <linux/init.h>
  26 #include <linux/fs.h>
  27 #include <linux/namei.h>
  28 #include <linux/slab.h>
  29 #include <linux/types.h>
  30 #include <linux/delay.h>
  31 #include <linux/unistd.h>
  32 #include <linux/string.h>
  33 #include <linux/syscalls.h>
  34 #include <linux/configfs.h>
  35
  36 #include <target/target_core_base.h>
  37 #include <target/target_core_fabric.h>
  38 #include <target/target_core_fabric_configfs.h>
  39 #include <target/target_core_configfs.h>
  40 #include <target/configfs_macros.h>
  41
  42 #include "target_core_internal.h"
  43 #include "target_core_alua.h"
  44 #include "target_core_pr.h"
  45
  46 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs)              \
  47 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
  48 {                                                                       \
  49         struct config_item_type *cit = &tf->tf_##_name##_cit;           \
  50                                                                         \
  51         cit->ct_item_ops = _item_ops;                                   \
  52         cit->ct_group_ops = _group_ops;                                 \
  53         cit->ct_attrs = _attrs;                                         \
  54         cit->ct_owner = tf->tf_ops->module;                             \
  55         pr_debug("Setup generic %s\n", __stringify(_name));             \
  56 }
  57
  58 #define TF_CIT_SETUP_DRV(_name, _item_ops, _group_ops)          \
  59 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
  60 {                                                                       \
  61         struct config_item_type *cit = &tf->tf_##_name##_cit;           \
  62         struct configfs_attribute **attrs = tf->tf_ops->tfc_##_name##_attrs; \
  63                                                                         \
  64         cit->ct_item_ops = _item_ops;                                   \
  65         cit->ct_group_ops = _group_ops;                                 \
  66         cit->ct_attrs = attrs;                                          \
  67         cit->ct_owner = tf->tf_ops->module;                             \
  68         pr_debug("Setup generic %s\n", __stringify(_name));             \
  69 }
  70
  71 /* Start of tfc_tpg_mappedlun_cit */
  72
  73 static int target_fabric_mappedlun_link(
  74         struct config_item *lun_acl_ci,
  75         struct config_item *lun_ci)
  76 {
  77         struct se_dev_entry *deve;
  78         struct se_lun *lun = container_of(to_config_group(lun_ci),
  79                         struct se_lun, lun_group);
  80         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
  81                         struct se_lun_acl, se_lun_group);
  82         struct se_portal_group *se_tpg;
  83         struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
  84         int lun_access;
  85
  86         if (lun->lun_link_magic != SE_LUN_LINK_MAGIC) {
  87                 pr_err("Bad lun->lun_link_magic, not a valid lun_ci pointer:"
  88                         " %p to struct lun: %p\n", lun_ci, lun);
  89                 return -EFAULT;
  90         }
  91         /*
  92          * Ensure that the source port exists
  93          */
  94         if (!lun->lun_se_dev) {
  95                 pr_err("Source se_lun->lun_se_dev does not exist\n");
  96                 return -EINVAL;
  97         }
  98         se_tpg = lun->lun_tpg;
  99
 100         nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
 101         tpg_ci = &nacl_ci->ci_group->cg_item;
 102         wwn_ci = &tpg_ci->ci_group->cg_item;
 103         tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
 104         wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
 105         /*
 106          * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
 107          */
 108         if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
 109                 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
 110                         config_item_name(wwn_ci));
 111                 return -EINVAL;
 112         }
 113         if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
 114                 pr_err("Illegal Initiator ACL Symlink outside of %s"
 115                         " TPGT: %s\n", config_item_name(wwn_ci),
 116                         config_item_name(tpg_ci));
 117                 return -EINVAL;
 118         }
 119         /*
 120          * If this struct se_node_acl was dynamically generated with
 121          * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
 122          * which be will write protected (READ-ONLY) when
 123          * tpg_1/attrib/demo_mode_write_protect=1
 124          */
 125         rcu_read_lock();
 126         deve = target_nacl_find_deve(lacl->se_lun_nacl, lacl->mapped_lun);
 127         if (deve)
 128                 lun_access = deve->lun_flags;
 129         else
 130                 lun_access =
 131                         (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
 132                                 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
 133                                            TRANSPORT_LUNFLAGS_READ_WRITE;
 134         rcu_read_unlock();
 135         /*
 136          * Determine the actual mapped LUN value user wants..
 137          *
 138          * This value is what the SCSI Initiator actually sees the
 139          * $FABRIC/$WWPN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
 140          */
 141         return core_dev_add_initiator_node_lun_acl(se_tpg, lacl, lun, lun_access);
 142 }
 143
 144 static int target_fabric_mappedlun_unlink(
 145         struct config_item *lun_acl_ci,
 146         struct config_item *lun_ci)
 147 {
 148         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
 149                         struct se_lun_acl, se_lun_group);
 150         struct se_lun *lun = container_of(to_config_group(lun_ci),
 151                         struct se_lun, lun_group);
 152
 153         return core_dev_del_initiator_node_lun_acl(lun, lacl);
 154 }
 155
 156 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
 157 #define TCM_MAPPEDLUN_ATTR(_name, _mode)                                \
 158 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
 159         __CONFIGFS_EATTR(_name, _mode,                                  \
 160         target_fabric_mappedlun_show_##_name,                           \
 161         target_fabric_mappedlun_store_##_name);
 162
 163 static ssize_t target_fabric_mappedlun_show_write_protect(
 164         struct se_lun_acl *lacl,
 165         char *page)
 166 {
 167         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 168         struct se_dev_entry *deve;
 169         ssize_t len = 0;
 170
 171         rcu_read_lock();
 172         deve = target_nacl_find_deve(se_nacl, lacl->mapped_lun);
 173         if (deve) {
 174                 len = sprintf(page, "%d\n",
 175                         (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ? 1 : 0);
 176         }
 177         rcu_read_unlock();
 178
 179         return len;
 180 }
 181
 182 static ssize_t target_fabric_mappedlun_store_write_protect(
 183         struct se_lun_acl *lacl,
 184         const char *page,
 185         size_t count)
 186 {
 187         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 188         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 189         unsigned long op;
 190         int ret;
 191
 192         ret = kstrtoul(page, 0, &op);
 193         if (ret)
 194                 return ret;
 195
 196         if ((op != 1) && (op != 0))
 197                 return -EINVAL;
 198
 199         core_update_device_list_access(lacl->mapped_lun, (op) ?
 200                         TRANSPORT_LUNFLAGS_READ_ONLY :
 201                         TRANSPORT_LUNFLAGS_READ_WRITE,
 202                         lacl->se_lun_nacl);
 203
 204         pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
 205                 " Mapped LUN: %llu Write Protect bit to %s\n",
 206                 se_tpg->se_tpg_tfo->get_fabric_name(),
 207                 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
 208
 209         return count;
 210
 211 }
 212
 213 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
 214
 215 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
 216
 217 static void target_fabric_mappedlun_release(struct config_item *item)
 218 {
 219         struct se_lun_acl *lacl = container_of(to_config_group(item),
 220                                 struct se_lun_acl, se_lun_group);
 221         struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
 222
 223         core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
 224 }
 225
 226 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
 227         &target_fabric_mappedlun_write_protect.attr,
 228         NULL,
 229 };
 230
 231 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
 232         .release                = target_fabric_mappedlun_release,
 233         .show_attribute         = target_fabric_mappedlun_attr_show,
 234         .store_attribute        = target_fabric_mappedlun_attr_store,
 235         .allow_link             = target_fabric_mappedlun_link,
 236         .drop_link              = target_fabric_mappedlun_unlink,
 237 };
 238
 239 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
 240                 target_fabric_mappedlun_attrs);
 241
 242 /* End of tfc_tpg_mappedlun_cit */
 243
 244 /* Start of tfc_tpg_mappedlun_port_cit */
 245
 246 static struct config_group *target_core_mappedlun_stat_mkdir(
 247         struct config_group *group,
 248         const char *name)
 249 {
 250         return ERR_PTR(-ENOSYS);
 251 }
 252
 253 static void target_core_mappedlun_stat_rmdir(
 254         struct config_group *group,
 255         struct config_item *item)
 256 {
 257         return;
 258 }
 259
 260 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
 261         .make_group             = target_core_mappedlun_stat_mkdir,
 262         .drop_item              = target_core_mappedlun_stat_rmdir,
 263 };
 264
 265 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
 266                 NULL);
 267
 268 /* End of tfc_tpg_mappedlun_port_cit */
 269
 270 /* Start of tfc_tpg_nacl_attrib_cit */
 271
 272 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
 273
 274 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
 275         .show_attribute         = target_fabric_nacl_attrib_attr_show,
 276         .store_attribute        = target_fabric_nacl_attrib_attr_store,
 277 };
 278
 279 TF_CIT_SETUP_DRV(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL);
 280
 281 /* End of tfc_tpg_nacl_attrib_cit */
 282
 283 /* Start of tfc_tpg_nacl_auth_cit */
 284
 285 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
 286
 287 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
 288         .show_attribute         = target_fabric_nacl_auth_attr_show,
 289         .store_attribute        = target_fabric_nacl_auth_attr_store,
 290 };
 291
 292 TF_CIT_SETUP_DRV(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL);
 293
 294 /* End of tfc_tpg_nacl_auth_cit */
 295
 296 /* Start of tfc_tpg_nacl_param_cit */
 297
 298 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
 299
 300 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
 301         .show_attribute         = target_fabric_nacl_param_attr_show,
 302         .store_attribute        = target_fabric_nacl_param_attr_store,
 303 };
 304
 305 TF_CIT_SETUP_DRV(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL);
 306
 307 /* End of tfc_tpg_nacl_param_cit */
 308
 309 /* Start of tfc_tpg_nacl_base_cit */
 310
 311 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
 312
 313 static struct config_group *target_fabric_make_mappedlun(
 314         struct config_group *group,
 315         const char *name)
 316 {
 317         struct se_node_acl *se_nacl = container_of(group,
 318                         struct se_node_acl, acl_group);
 319         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 320         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 321         struct se_lun_acl *lacl = NULL;
 322         struct config_item *acl_ci;
 323         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 324         char *buf;
 325         unsigned long long mapped_lun;
 326         int ret = 0;
 327
 328         acl_ci = &group->cg_item;
 329         if (!acl_ci) {
 330                 pr_err("Unable to locatel acl_ci\n");
 331                 return NULL;
 332         }
 333
 334         buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
 335         if (!buf) {
 336                 pr_err("Unable to allocate memory for name buf\n");
 337                 return ERR_PTR(-ENOMEM);
 338         }
 339         snprintf(buf, strlen(name) + 1, "%s", name);
 340         /*
 341          * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
 342          */
 343         if (strstr(buf, "lun_") != buf) {
 344                 pr_err("Unable to locate \"lun_\" from buf: %s"
 345                         " name: %s\n", buf, name);
 346                 ret = -EINVAL;
 347                 goto out;
 348         }
 349         /*
 350          * Determine the Mapped LUN value.  This is what the SCSI Initiator
 351          * Port will actually see.
 352          */
 353         ret = kstrtoull(buf + 4, 0, &mapped_lun);
 354         if (ret)
 355                 goto out;
 356
 357         lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
 358                         mapped_lun, &ret);
 359         if (!lacl) {
 360                 ret = -EINVAL;
 361                 goto out;
 362         }
 363
 364         lacl_cg = &lacl->se_lun_group;
 365         lacl_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 366                                 GFP_KERNEL);
 367         if (!lacl_cg->default_groups) {
 368                 pr_err("Unable to allocate lacl_cg->default_groups\n");
 369                 ret = -ENOMEM;
 370                 goto out;
 371         }
 372
 373         config_group_init_type_name(&lacl->se_lun_group, name,
 374                         &tf->tf_tpg_mappedlun_cit);
 375         config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
 376                         "statistics", &tf->tf_tpg_mappedlun_stat_cit);
 377         lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
 378         lacl_cg->default_groups[1] = NULL;
 379
 380         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 381         ml_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 3,
 382                                 GFP_KERNEL);
 383         if (!ml_stat_grp->default_groups) {
 384                 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
 385                 ret = -ENOMEM;
 386                 goto out;
 387         }
 388         target_stat_setup_mappedlun_default_groups(lacl);
 389
 390         kfree(buf);
 391         return &lacl->se_lun_group;
 392 out:
 393         if (lacl_cg)
 394                 kfree(lacl_cg->default_groups);
 395         kfree(lacl);
 396         kfree(buf);
 397         return ERR_PTR(ret);
 398 }
 399
 400 static void target_fabric_drop_mappedlun(
 401         struct config_group *group,
 402         struct config_item *item)
 403 {
 404         struct se_lun_acl *lacl = container_of(to_config_group(item),
 405                         struct se_lun_acl, se_lun_group);
 406         struct config_item *df_item;
 407         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 408         int i;
 409
 410         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 411         for (i = 0; ml_stat_grp->default_groups[i]; i++) {
 412                 df_item = &ml_stat_grp->default_groups[i]->cg_item;
 413                 ml_stat_grp->default_groups[i] = NULL;
 414                 config_item_put(df_item);
 415         }
 416         kfree(ml_stat_grp->default_groups);
 417
 418         lacl_cg = &lacl->se_lun_group;
 419         for (i = 0; lacl_cg->default_groups[i]; i++) {
 420                 df_item = &lacl_cg->default_groups[i]->cg_item;
 421                 lacl_cg->default_groups[i] = NULL;
 422                 config_item_put(df_item);
 423         }
 424         kfree(lacl_cg->default_groups);
 425
 426         config_item_put(item);
 427 }
 428
 429 static void target_fabric_nacl_base_release(struct config_item *item)
 430 {
 431         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 432                         struct se_node_acl, acl_group);
 433         struct target_fabric_configfs *tf = se_nacl->se_tpg->se_tpg_wwn->wwn_tf;
 434
 435         if (tf->tf_ops->fabric_cleanup_nodeacl)
 436                 tf->tf_ops->fabric_cleanup_nodeacl(se_nacl);
 437         core_tpg_del_initiator_node_acl(se_nacl);
 438 }
 439
 440 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
 441         .release                = target_fabric_nacl_base_release,
 442         .show_attribute         = target_fabric_nacl_base_attr_show,
 443         .store_attribute        = target_fabric_nacl_base_attr_store,
 444 };
 445
 446 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
 447         .make_group             = target_fabric_make_mappedlun,
 448         .drop_item              = target_fabric_drop_mappedlun,
 449 };
 450
 451 TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
 452                 &target_fabric_nacl_base_group_ops);
 453
 454 /* End of tfc_tpg_nacl_base_cit */
 455
 456 /* Start of tfc_node_fabric_stats_cit */
 457 /*
 458  * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
 459  * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
 460  */
 461 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
 462
 463 /* End of tfc_wwn_fabric_stats_cit */
 464
 465 /* Start of tfc_tpg_nacl_cit */
 466
 467 static struct config_group *target_fabric_make_nodeacl(
 468         struct config_group *group,
 469         const char *name)
 470 {
 471         struct se_portal_group *se_tpg = container_of(group,
 472                         struct se_portal_group, tpg_acl_group);
 473         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 474         struct se_node_acl *se_nacl;
 475         struct config_group *nacl_cg;
 476
 477         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
 478         if (IS_ERR(se_nacl))
 479                 return ERR_CAST(se_nacl);
 480
 481         if (tf->tf_ops->fabric_init_nodeacl) {
 482                 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
 483                 if (ret) {
 484                         core_tpg_del_initiator_node_acl(se_nacl);
 485                         return ERR_PTR(ret);
 486                 }
 487         }
 488
 489         nacl_cg = &se_nacl->acl_group;
 490         nacl_cg->default_groups = se_nacl->acl_default_groups;
 491         nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
 492         nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
 493         nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
 494         nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
 495         nacl_cg->default_groups[4] = NULL;
 496
 497         config_group_init_type_name(&se_nacl->acl_group, name,
 498                         &tf->tf_tpg_nacl_base_cit);
 499         config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
 500                         &tf->tf_tpg_nacl_attrib_cit);
 501         config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
 502                         &tf->tf_tpg_nacl_auth_cit);
 503         config_group_init_type_name(&se_nacl->acl_param_group, "param",
 504                         &tf->tf_tpg_nacl_param_cit);
 505         config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
 506                         "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
 507
 508         return &se_nacl->acl_group;
 509 }
 510
 511 static void target_fabric_drop_nodeacl(
 512         struct config_group *group,
 513         struct config_item *item)
 514 {
 515         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 516                         struct se_node_acl, acl_group);
 517         struct config_item *df_item;
 518         struct config_group *nacl_cg;
 519         int i;
 520
 521         nacl_cg = &se_nacl->acl_group;
 522         for (i = 0; nacl_cg->default_groups[i]; i++) {
 523                 df_item = &nacl_cg->default_groups[i]->cg_item;
 524                 nacl_cg->default_groups[i] = NULL;
 525                 config_item_put(df_item);
 526         }
 527         /*
 528          * struct se_node_acl free is done in target_fabric_nacl_base_release()
 529          */
 530         config_item_put(item);
 531 }
 532
 533 static struct configfs_group_operations target_fabric_nacl_group_ops = {
 534         .make_group     = target_fabric_make_nodeacl,
 535         .drop_item      = target_fabric_drop_nodeacl,
 536 };
 537
 538 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
 539
 540 /* End of tfc_tpg_nacl_cit */
 541
 542 /* Start of tfc_tpg_np_base_cit */
 543
 544 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
 545
 546 static void target_fabric_np_base_release(struct config_item *item)
 547 {
 548         struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
 549                                 struct se_tpg_np, tpg_np_group);
 550         struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
 551         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 552
 553         tf->tf_ops->fabric_drop_np(se_tpg_np);
 554 }
 555
 556 static struct configfs_item_operations target_fabric_np_base_item_ops = {
 557         .release                = target_fabric_np_base_release,
 558         .show_attribute         = target_fabric_np_base_attr_show,
 559         .store_attribute        = target_fabric_np_base_attr_store,
 560 };
 561
 562 TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
 563
 564 /* End of tfc_tpg_np_base_cit */
 565
 566 /* Start of tfc_tpg_np_cit */
 567
 568 static struct config_group *target_fabric_make_np(
 569         struct config_group *group,
 570         const char *name)
 571 {
 572         struct se_portal_group *se_tpg = container_of(group,
 573                                 struct se_portal_group, tpg_np_group);
 574         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 575         struct se_tpg_np *se_tpg_np;
 576
 577         if (!tf->tf_ops->fabric_make_np) {
 578                 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
 579                 return ERR_PTR(-ENOSYS);
 580         }
 581
 582         se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
 583         if (!se_tpg_np || IS_ERR(se_tpg_np))
 584                 return ERR_PTR(-EINVAL);
 585
 586         se_tpg_np->tpg_np_parent = se_tpg;
 587         config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
 588                         &tf->tf_tpg_np_base_cit);
 589
 590         return &se_tpg_np->tpg_np_group;
 591 }
 592
 593 static void target_fabric_drop_np(
 594         struct config_group *group,
 595         struct config_item *item)
 596 {
 597         /*
 598          * struct se_tpg_np is released via target_fabric_np_base_release()
 599          */
 600         config_item_put(item);
 601 }
 602
 603 static struct configfs_group_operations target_fabric_np_group_ops = {
 604         .make_group     = &target_fabric_make_np,
 605         .drop_item      = &target_fabric_drop_np,
 606 };
 607
 608 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
 609
 610 /* End of tfc_tpg_np_cit */
 611
 612 /* Start of tfc_tpg_port_cit */
 613
 614 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
 615 #define TCM_PORT_ATTR(_name, _mode)                                     \
 616 static struct target_fabric_port_attribute target_fabric_port_##_name = \
 617         __CONFIGFS_EATTR(_name, _mode,                                  \
 618         target_fabric_port_show_attr_##_name,                           \
 619         target_fabric_port_store_attr_##_name);
 620
 621 #define TCM_PORT_ATTOR_RO(_name)                                        \
 622         __CONFIGFS_EATTR_RO(_name,                                      \
 623         target_fabric_port_show_attr_##_name);
 624
 625 /*
 626  * alua_tg_pt_gp
 627  */
 628 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
 629         struct se_lun *lun,
 630         char *page)
 631 {
 632         if (!lun || !lun->lun_se_dev)
 633                 return -ENODEV;
 634
 635         return core_alua_show_tg_pt_gp_info(lun, page);
 636 }
 637
 638 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
 639         struct se_lun *lun,
 640         const char *page,
 641         size_t count)
 642 {
 643         if (!lun || !lun->lun_se_dev)
 644                 return -ENODEV;
 645
 646         return core_alua_store_tg_pt_gp_info(lun, page, count);
 647 }
 648
 649 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
 650
 651 /*
 652  * alua_tg_pt_offline
 653  */
 654 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
 655         struct se_lun *lun,
 656         char *page)
 657 {
 658         if (!lun || !lun->lun_se_dev)
 659                 return -ENODEV;
 660
 661         return core_alua_show_offline_bit(lun, page);
 662 }
 663
 664 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
 665         struct se_lun *lun,
 666         const char *page,
 667         size_t count)
 668 {
 669         if (!lun || !lun->lun_se_dev)
 670                 return -ENODEV;
 671
 672         return core_alua_store_offline_bit(lun, page, count);
 673 }
 674
 675 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
 676
 677 /*
 678  * alua_tg_pt_status
 679  */
 680 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
 681         struct se_lun *lun,
 682         char *page)
 683 {
 684         if (!lun || !lun->lun_se_dev)
 685                 return -ENODEV;
 686
 687         return core_alua_show_secondary_status(lun, page);
 688 }
 689
 690 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
 691         struct se_lun *lun,
 692         const char *page,
 693         size_t count)
 694 {
 695         if (!lun || !lun->lun_se_dev)
 696                 return -ENODEV;
 697
 698         return core_alua_store_secondary_status(lun, page, count);
 699 }
 700
 701 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
 702
 703 /*
 704  * alua_tg_pt_write_md
 705  */
 706 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
 707         struct se_lun *lun,
 708         char *page)
 709 {
 710         if (!lun || !lun->lun_se_dev)
 711                 return -ENODEV;
 712
 713         return core_alua_show_secondary_write_metadata(lun, page);
 714 }
 715
 716 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
 717         struct se_lun *lun,
 718         const char *page,
 719         size_t count)
 720 {
 721         if (!lun || !lun->lun_se_dev)
 722                 return -ENODEV;
 723
 724         return core_alua_store_secondary_write_metadata(lun, page, count);
 725 }
 726
 727 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
 728
 729
 730 static struct configfs_attribute *target_fabric_port_attrs[] = {
 731         &target_fabric_port_alua_tg_pt_gp.attr,
 732         &target_fabric_port_alua_tg_pt_offline.attr,
 733         &target_fabric_port_alua_tg_pt_status.attr,
 734         &target_fabric_port_alua_tg_pt_write_md.attr,
 735         NULL,
 736 };
 737
 738 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
 739
 740 static int target_fabric_port_link(
 741         struct config_item *lun_ci,
 742         struct config_item *se_dev_ci)
 743 {
 744         struct config_item *tpg_ci;
 745         struct se_lun *lun = container_of(to_config_group(lun_ci),
 746                                 struct se_lun, lun_group);
 747         struct se_portal_group *se_tpg;
 748         struct se_device *dev =
 749                 container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
 750         struct target_fabric_configfs *tf;
 751         int ret;
 752
 753         if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
 754                 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
 755                         " %p to struct se_device: %p\n", se_dev_ci, dev);
 756                 return -EFAULT;
 757         }
 758
 759         if (!(dev->dev_flags & DF_CONFIGURED)) {
 760                 pr_err("se_device not configured yet, cannot port link\n");
 761                 return -ENODEV;
 762         }
 763
 764         tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
 765         se_tpg = container_of(to_config_group(tpg_ci),
 766                                 struct se_portal_group, tpg_group);
 767         tf = se_tpg->se_tpg_wwn->wwn_tf;
 768
 769         if (lun->lun_se_dev !=  NULL) {
 770                 pr_err("Port Symlink already exists\n");
 771                 return -EEXIST;
 772         }
 773
 774         ret = core_dev_add_lun(se_tpg, dev, lun);
 775         if (ret) {
 776                 pr_err("core_dev_add_lun() failed: %d\n", ret);
 777                 goto out;
 778         }
 779
 780         if (tf->tf_ops->fabric_post_link) {
 781                 /*
 782                  * Call the optional fabric_post_link() to allow a
 783                  * fabric module to setup any additional state once
 784                  * core_dev_add_lun() has been called..
 785                  */
 786                 tf->tf_ops->fabric_post_link(se_tpg, lun);
 787         }
 788
 789         return 0;
 790 out:
 791         return ret;
 792 }
 793
 794 static int target_fabric_port_unlink(
 795         struct config_item *lun_ci,
 796         struct config_item *se_dev_ci)
 797 {
 798         struct se_lun *lun = container_of(to_config_group(lun_ci),
 799                                 struct se_lun, lun_group);
 800         struct se_portal_group *se_tpg = lun->lun_tpg;
 801         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 802
 803         if (tf->tf_ops->fabric_pre_unlink) {
 804                 /*
 805                  * Call the optional fabric_pre_unlink() to allow a
 806                  * fabric module to release any additional stat before
 807                  * core_dev_del_lun() is called.
 808                 */
 809                 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
 810         }
 811
 812         core_dev_del_lun(se_tpg, lun);
 813         return 0;
 814 }
 815
 816 static void target_fabric_port_release(struct config_item *item)
 817 {
 818         struct se_lun *lun = container_of(to_config_group(item),
 819                                           struct se_lun, lun_group);
 820
 821         kfree_rcu(lun, rcu_head);
 822 }
 823
 824 static struct configfs_item_operations target_fabric_port_item_ops = {
 825         .show_attribute         = target_fabric_port_attr_show,
 826         .store_attribute        = target_fabric_port_attr_store,
 827         .release                = target_fabric_port_release,
 828         .allow_link             = target_fabric_port_link,
 829         .drop_link              = target_fabric_port_unlink,
 830 };
 831
 832 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
 833
 834 /* End of tfc_tpg_port_cit */
 835
 836 /* Start of tfc_tpg_port_stat_cit */
 837
 838 static struct config_group *target_core_port_stat_mkdir(
 839         struct config_group *group,
 840         const char *name)
 841 {
 842         return ERR_PTR(-ENOSYS);
 843 }
 844
 845 static void target_core_port_stat_rmdir(
 846         struct config_group *group,
 847         struct config_item *item)
 848 {
 849         return;
 850 }
 851
 852 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
 853         .make_group             = target_core_port_stat_mkdir,
 854         .drop_item              = target_core_port_stat_rmdir,
 855 };
 856
 857 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
 858
 859 /* End of tfc_tpg_port_stat_cit */
 860
 861 /* Start of tfc_tpg_lun_cit */
 862
 863 static struct config_group *target_fabric_make_lun(
 864         struct config_group *group,
 865         const char *name)
 866 {
 867         struct se_lun *lun;
 868         struct se_portal_group *se_tpg = container_of(group,
 869                         struct se_portal_group, tpg_lun_group);
 870         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 871         struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
 872         unsigned long long unpacked_lun;
 873         int errno;
 874
 875         if (strstr(name, "lun_") != name) {
 876                 pr_err("Unable to locate \'_\" in"
 877                                 " \"lun_$LUN_NUMBER\"\n");
 878                 return ERR_PTR(-EINVAL);
 879         }
 880         errno = kstrtoull(name + 4, 0, &unpacked_lun);
 881         if (errno)
 882                 return ERR_PTR(errno);
 883
 884         lun = core_tpg_alloc_lun(se_tpg, unpacked_lun);
 885         if (IS_ERR(lun))
 886                 return ERR_CAST(lun);
 887
 888         lun_cg = &lun->lun_group;
 889         lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 890                                 GFP_KERNEL);
 891         if (!lun_cg->default_groups) {
 892                 pr_err("Unable to allocate lun_cg->default_groups\n");
 893                 kfree(lun);
 894                 return ERR_PTR(-ENOMEM);
 895         }
 896
 897         config_group_init_type_name(&lun->lun_group, name,
 898                         &tf->tf_tpg_port_cit);
 899         config_group_init_type_name(&lun->port_stat_grps.stat_group,
 900                         "statistics", &tf->tf_tpg_port_stat_cit);
 901         lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
 902         lun_cg->default_groups[1] = NULL;
 903
 904         port_stat_grp = &lun->port_stat_grps.stat_group;
 905         port_stat_grp->default_groups =  kzalloc(sizeof(struct config_group *) * 4,
 906                                 GFP_KERNEL);
 907         if (!port_stat_grp->default_groups) {
 908                 pr_err("Unable to allocate port_stat_grp->default_groups\n");
 909                 kfree(lun_cg->default_groups);
 910                 kfree(lun);
 911                 return ERR_PTR(-ENOMEM);
 912         }
 913         target_stat_setup_port_default_groups(lun);
 914
 915         return &lun->lun_group;
 916 }
 917
 918 static void target_fabric_drop_lun(
 919         struct config_group *group,
 920         struct config_item *item)
 921 {
 922         struct se_lun *lun = container_of(to_config_group(item),
 923                                 struct se_lun, lun_group);
 924         struct config_item *df_item;
 925         struct config_group *lun_cg, *port_stat_grp;
 926         int i;
 927
 928         port_stat_grp = &lun->port_stat_grps.stat_group;
 929         for (i = 0; port_stat_grp->default_groups[i]; i++) {
 930                 df_item = &port_stat_grp->default_groups[i]->cg_item;
 931                 port_stat_grp->default_groups[i] = NULL;
 932                 config_item_put(df_item);
 933         }
 934         kfree(port_stat_grp->default_groups);
 935
 936         lun_cg = &lun->lun_group;
 937         for (i = 0; lun_cg->default_groups[i]; i++) {
 938                 df_item = &lun_cg->default_groups[i]->cg_item;
 939                 lun_cg->default_groups[i] = NULL;
 940                 config_item_put(df_item);
 941         }
 942         kfree(lun_cg->default_groups);
 943
 944         config_item_put(item);
 945 }
 946
 947 static struct configfs_group_operations target_fabric_lun_group_ops = {
 948         .make_group     = &target_fabric_make_lun,
 949         .drop_item      = &target_fabric_drop_lun,
 950 };
 951
 952 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
 953
 954 /* End of tfc_tpg_lun_cit */
 955
 956 /* Start of tfc_tpg_attrib_cit */
 957
 958 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
 959
 960 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
 961         .show_attribute         = target_fabric_tpg_attrib_attr_show,
 962         .store_attribute        = target_fabric_tpg_attrib_attr_store,
 963 };
 964
 965 TF_CIT_SETUP_DRV(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL);
 966
 967 /* End of tfc_tpg_attrib_cit */
 968
 969 /* Start of tfc_tpg_auth_cit */
 970
 971 CONFIGFS_EATTR_OPS(target_fabric_tpg_auth, se_portal_group, tpg_auth_group);
 972
 973 static struct configfs_item_operations target_fabric_tpg_auth_item_ops = {
 974         .show_attribute         = target_fabric_tpg_auth_attr_show,
 975         .store_attribute        = target_fabric_tpg_auth_attr_store,
 976 };
 977
 978 TF_CIT_SETUP_DRV(tpg_auth, &target_fabric_tpg_auth_item_ops, NULL);
 979
 980 /* End of tfc_tpg_attrib_cit */
 981
 982 /* Start of tfc_tpg_param_cit */
 983
 984 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
 985
 986 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
 987         .show_attribute         = target_fabric_tpg_param_attr_show,
 988         .store_attribute        = target_fabric_tpg_param_attr_store,
 989 };
 990
 991 TF_CIT_SETUP_DRV(tpg_param, &target_fabric_tpg_param_item_ops, NULL);
 992
 993 /* End of tfc_tpg_param_cit */
 994
 995 /* Start of tfc_tpg_base_cit */
 996 /*
 997  * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
 998  */
 999 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
1000
1001 static void target_fabric_tpg_release(struct config_item *item)
1002 {
1003         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1004                         struct se_portal_group, tpg_group);
1005         struct se_wwn *wwn = se_tpg->se_tpg_wwn;
1006         struct target_fabric_configfs *tf = wwn->wwn_tf;
1007
1008         tf->tf_ops->fabric_drop_tpg(se_tpg);
1009 }
1010
1011 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
1012         .release                = target_fabric_tpg_release,
1013         .show_attribute         = target_fabric_tpg_attr_show,
1014         .store_attribute        = target_fabric_tpg_attr_store,
1015 };
1016
1017 TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
1018
1019 /* End of tfc_tpg_base_cit */
1020
1021 /* Start of tfc_tpg_cit */
1022
1023 static struct config_group *target_fabric_make_tpg(
1024         struct config_group *group,
1025         const char *name)
1026 {
1027         struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1028         struct target_fabric_configfs *tf = wwn->wwn_tf;
1029         struct se_portal_group *se_tpg;
1030
1031         if (!tf->tf_ops->fabric_make_tpg) {
1032                 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
1033                 return ERR_PTR(-ENOSYS);
1034         }
1035
1036         se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
1037         if (!se_tpg || IS_ERR(se_tpg))
1038                 return ERR_PTR(-EINVAL);
1039         /*
1040          * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1041          */
1042         se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1043         se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1044         se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1045         se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1046         se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1047         se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_auth_group;
1048         se_tpg->tpg_group.default_groups[5] = &se_tpg->tpg_param_group;
1049         se_tpg->tpg_group.default_groups[6] = NULL;
1050
1051         config_group_init_type_name(&se_tpg->tpg_group, name,
1052                         &tf->tf_tpg_base_cit);
1053         config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1054                         &tf->tf_tpg_lun_cit);
1055         config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1056                         &tf->tf_tpg_np_cit);
1057         config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1058                         &tf->tf_tpg_nacl_cit);
1059         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1060                         &tf->tf_tpg_attrib_cit);
1061         config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
1062                         &tf->tf_tpg_auth_cit);
1063         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1064                         &tf->tf_tpg_param_cit);
1065
1066         return &se_tpg->tpg_group;
1067 }
1068
1069 static void target_fabric_drop_tpg(
1070         struct config_group *group,
1071         struct config_item *item)
1072 {
1073         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1074                                 struct se_portal_group, tpg_group);
1075         struct config_group *tpg_cg = &se_tpg->tpg_group;
1076         struct config_item *df_item;
1077         int i;
1078         /*
1079          * Release default groups, but do not release tpg_cg->default_groups
1080          * memory as it is statically allocated at se_tpg->tpg_default_groups.
1081          */
1082         for (i = 0; tpg_cg->default_groups[i]; i++) {
1083                 df_item = &tpg_cg->default_groups[i]->cg_item;
1084                 tpg_cg->default_groups[i] = NULL;
1085                 config_item_put(df_item);
1086         }
1087
1088         config_item_put(item);
1089 }
1090
1091 static void target_fabric_release_wwn(struct config_item *item)
1092 {
1093         struct se_wwn *wwn = container_of(to_config_group(item),
1094                                 struct se_wwn, wwn_group);
1095         struct target_fabric_configfs *tf = wwn->wwn_tf;
1096
1097         tf->tf_ops->fabric_drop_wwn(wwn);
1098 }
1099
1100 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1101         .release        = target_fabric_release_wwn,
1102 };
1103
1104 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1105         .make_group     = target_fabric_make_tpg,
1106         .drop_item      = target_fabric_drop_tpg,
1107 };
1108
1109 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1110                 NULL);
1111
1112 /* End of tfc_tpg_cit */
1113
1114 /* Start of tfc_wwn_fabric_stats_cit */
1115 /*
1116  * This is used as a placeholder for struct se_wwn->fabric_stat_group
1117  * to allow fabrics access to ->fabric_stat_group->default_groups[]
1118  */
1119 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1120
1121 /* End of tfc_wwn_fabric_stats_cit */
1122
1123 /* Start of tfc_wwn_cit */
1124
1125 static struct config_group *target_fabric_make_wwn(
1126         struct config_group *group,
1127         const char *name)
1128 {
1129         struct target_fabric_configfs *tf = container_of(group,
1130                                 struct target_fabric_configfs, tf_group);
1131         struct se_wwn *wwn;
1132
1133         if (!tf->tf_ops->fabric_make_wwn) {
1134                 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1135                 return ERR_PTR(-ENOSYS);
1136         }
1137
1138         wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
1139         if (!wwn || IS_ERR(wwn))
1140                 return ERR_PTR(-EINVAL);
1141
1142         wwn->wwn_tf = tf;
1143         /*
1144          * Setup default groups from pre-allocated wwn->wwn_default_groups
1145          */
1146         wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1147         wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1148         wwn->wwn_group.default_groups[1] = NULL;
1149
1150         config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
1151         config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1152                         &tf->tf_wwn_fabric_stats_cit);
1153
1154         return &wwn->wwn_group;
1155 }
1156
1157 static void target_fabric_drop_wwn(
1158         struct config_group *group,
1159         struct config_item *item)
1160 {
1161         struct se_wwn *wwn = container_of(to_config_group(item),
1162                                 struct se_wwn, wwn_group);
1163         struct config_item *df_item;
1164         struct config_group *cg = &wwn->wwn_group;
1165         int i;
1166
1167         for (i = 0; cg->default_groups[i]; i++) {
1168                 df_item = &cg->default_groups[i]->cg_item;
1169                 cg->default_groups[i] = NULL;
1170                 config_item_put(df_item);
1171         }
1172
1173         config_item_put(item);
1174 }
1175
1176 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1177         .make_group     = target_fabric_make_wwn,
1178         .drop_item      = target_fabric_drop_wwn,
1179 };
1180 /*
1181  * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1182  */
1183 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1184
1185 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1186         .show_attribute         = target_fabric_wwn_attr_show,
1187         .store_attribute        = target_fabric_wwn_attr_store,
1188 };
1189
1190 TF_CIT_SETUP_DRV(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops);
1191
1192 /* End of tfc_wwn_cit */
1193
1194 /* Start of tfc_discovery_cit */
1195
1196 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1197                 tf_disc_group);
1198
1199 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1200         .show_attribute         = target_fabric_discovery_attr_show,
1201         .store_attribute        = target_fabric_discovery_attr_store,
1202 };
1203
1204 TF_CIT_SETUP_DRV(discovery, &target_fabric_discovery_item_ops, NULL);
1205
1206 /* End of tfc_discovery_cit */
1207
1208 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1209 {
1210         target_fabric_setup_discovery_cit(tf);
1211         target_fabric_setup_wwn_cit(tf);
1212         target_fabric_setup_wwn_fabric_stats_cit(tf);
1213         target_fabric_setup_tpg_cit(tf);
1214         target_fabric_setup_tpg_base_cit(tf);
1215         target_fabric_setup_tpg_port_cit(tf);
1216         target_fabric_setup_tpg_port_stat_cit(tf);
1217         target_fabric_setup_tpg_lun_cit(tf);
1218         target_fabric_setup_tpg_np_cit(tf);
1219         target_fabric_setup_tpg_np_base_cit(tf);
1220         target_fabric_setup_tpg_attrib_cit(tf);
1221         target_fabric_setup_tpg_auth_cit(tf);
1222         target_fabric_setup_tpg_param_cit(tf);
1223         target_fabric_setup_tpg_nacl_cit(tf);
1224         target_fabric_setup_tpg_nacl_base_cit(tf);
1225         target_fabric_setup_tpg_nacl_attrib_cit(tf);
1226         target_fabric_setup_tpg_nacl_auth_cit(tf);
1227         target_fabric_setup_tpg_nacl_param_cit(tf);
1228         target_fabric_setup_tpg_nacl_stat_cit(tf);
1229         target_fabric_setup_tpg_mappedlun_cit(tf);
1230         target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1231
1232         return 0;
1233 }