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