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 ret = 0, 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_sep || !lun->lun_sep->sep_tpg) {
  95                 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
  96                                 "_tpg does not exist\n");
  97                 return -EINVAL;
  98         }
  99         se_tpg = lun->lun_sep->sep_tpg;
 100
 101         nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
 102         tpg_ci = &nacl_ci->ci_group->cg_item;
 103         wwn_ci = &tpg_ci->ci_group->cg_item;
 104         tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
 105         wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
 106         /*
 107          * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
 108          */
 109         if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
 110                 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
 111                         config_item_name(wwn_ci));
 112                 return -EINVAL;
 113         }
 114         if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
 115                 pr_err("Illegal Initiator ACL Symlink outside of %s"
 116                         " TPGT: %s\n", config_item_name(wwn_ci),
 117                         config_item_name(tpg_ci));
 118                 return -EINVAL;
 119         }
 120         /*
 121          * If this struct se_node_acl was dynamically generated with
 122          * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
 123          * which be will write protected (READ-ONLY) when
 124          * tpg_1/attrib/demo_mode_write_protect=1
 125          */
 126         spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
 127         deve = lacl->se_lun_nacl->device_list[lacl->mapped_lun];
 128         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
 129                 lun_access = deve->lun_flags;
 130         else
 131                 lun_access =
 132                         (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
 133                                 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
 134                                            TRANSPORT_LUNFLAGS_READ_WRITE;
 135         spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
 136         /*
 137          * Determine the actual mapped LUN value user wants..
 138          *
 139          * This value is what the SCSI Initiator actually sees the
 140          * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
 141          */
 142         ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
 143                         lun->unpacked_lun, lun_access);
 144
 145         return (ret < 0) ? -EINVAL : 0;
 146 }
 147
 148 static int target_fabric_mappedlun_unlink(
 149         struct config_item *lun_acl_ci,
 150         struct config_item *lun_ci)
 151 {
 152         struct se_lun *lun;
 153         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
 154                         struct se_lun_acl, se_lun_group);
 155         struct se_node_acl *nacl = lacl->se_lun_nacl;
 156         struct se_dev_entry *deve = nacl->device_list[lacl->mapped_lun];
 157         struct se_portal_group *se_tpg;
 158         /*
 159          * Determine if the underlying MappedLUN has already been released..
 160          */
 161         if (!deve->se_lun)
 162                 return 0;
 163
 164         lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
 165         se_tpg = lun->lun_sep->sep_tpg;
 166
 167         core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
 168         return 0;
 169 }
 170
 171 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
 172 #define TCM_MAPPEDLUN_ATTR(_name, _mode)                                \
 173 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
 174         __CONFIGFS_EATTR(_name, _mode,                                  \
 175         target_fabric_mappedlun_show_##_name,                           \
 176         target_fabric_mappedlun_store_##_name);
 177
 178 static ssize_t target_fabric_mappedlun_show_write_protect(
 179         struct se_lun_acl *lacl,
 180         char *page)
 181 {
 182         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 183         struct se_dev_entry *deve;
 184         ssize_t len;
 185
 186         spin_lock_irq(&se_nacl->device_list_lock);
 187         deve = se_nacl->device_list[lacl->mapped_lun];
 188         len = sprintf(page, "%d\n",
 189                         (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
 190                         1 : 0);
 191         spin_unlock_irq(&se_nacl->device_list_lock);
 192
 193         return len;
 194 }
 195
 196 static ssize_t target_fabric_mappedlun_store_write_protect(
 197         struct se_lun_acl *lacl,
 198         const char *page,
 199         size_t count)
 200 {
 201         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 202         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 203         unsigned long op;
 204         int ret;
 205
 206         ret = kstrtoul(page, 0, &op);
 207         if (ret)
 208                 return ret;
 209
 210         if ((op != 1) && (op != 0))
 211                 return -EINVAL;
 212
 213         core_update_device_list_access(lacl->mapped_lun, (op) ?
 214                         TRANSPORT_LUNFLAGS_READ_ONLY :
 215                         TRANSPORT_LUNFLAGS_READ_WRITE,
 216                         lacl->se_lun_nacl);
 217
 218         pr_debug("%s_ConfigFS: Changed Initiator ACL: %s"
 219                 " Mapped LUN: %u Write Protect bit to %s\n",
 220                 se_tpg->se_tpg_tfo->get_fabric_name(),
 221                 lacl->initiatorname, lacl->mapped_lun, (op) ? "ON" : "OFF");
 222
 223         return count;
 224
 225 }
 226
 227 TCM_MAPPEDLUN_ATTR(write_protect, S_IRUGO | S_IWUSR);
 228
 229 CONFIGFS_EATTR_OPS(target_fabric_mappedlun, se_lun_acl, se_lun_group);
 230
 231 static void target_fabric_mappedlun_release(struct config_item *item)
 232 {
 233         struct se_lun_acl *lacl = container_of(to_config_group(item),
 234                                 struct se_lun_acl, se_lun_group);
 235         struct se_portal_group *se_tpg = lacl->se_lun_nacl->se_tpg;
 236
 237         core_dev_free_initiator_node_lun_acl(se_tpg, lacl);
 238 }
 239
 240 static struct configfs_attribute *target_fabric_mappedlun_attrs[] = {
 241         &target_fabric_mappedlun_write_protect.attr,
 242         NULL,
 243 };
 244
 245 static struct configfs_item_operations target_fabric_mappedlun_item_ops = {
 246         .release                = target_fabric_mappedlun_release,
 247         .show_attribute         = target_fabric_mappedlun_attr_show,
 248         .store_attribute        = target_fabric_mappedlun_attr_store,
 249         .allow_link             = target_fabric_mappedlun_link,
 250         .drop_link              = target_fabric_mappedlun_unlink,
 251 };
 252
 253 TF_CIT_SETUP(tpg_mappedlun, &target_fabric_mappedlun_item_ops, NULL,
 254                 target_fabric_mappedlun_attrs);
 255
 256 /* End of tfc_tpg_mappedlun_cit */
 257
 258 /* Start of tfc_tpg_mappedlun_port_cit */
 259
 260 static struct config_group *target_core_mappedlun_stat_mkdir(
 261         struct config_group *group,
 262         const char *name)
 263 {
 264         return ERR_PTR(-ENOSYS);
 265 }
 266
 267 static void target_core_mappedlun_stat_rmdir(
 268         struct config_group *group,
 269         struct config_item *item)
 270 {
 271         return;
 272 }
 273
 274 static struct configfs_group_operations target_fabric_mappedlun_stat_group_ops = {
 275         .make_group             = target_core_mappedlun_stat_mkdir,
 276         .drop_item              = target_core_mappedlun_stat_rmdir,
 277 };
 278
 279 TF_CIT_SETUP(tpg_mappedlun_stat, NULL, &target_fabric_mappedlun_stat_group_ops,
 280                 NULL);
 281
 282 /* End of tfc_tpg_mappedlun_port_cit */
 283
 284 /* Start of tfc_tpg_nacl_attrib_cit */
 285
 286 CONFIGFS_EATTR_OPS(target_fabric_nacl_attrib, se_node_acl, acl_attrib_group);
 287
 288 static struct configfs_item_operations target_fabric_nacl_attrib_item_ops = {
 289         .show_attribute         = target_fabric_nacl_attrib_attr_show,
 290         .store_attribute        = target_fabric_nacl_attrib_attr_store,
 291 };
 292
 293 TF_CIT_SETUP_DRV(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL);
 294
 295 /* End of tfc_tpg_nacl_attrib_cit */
 296
 297 /* Start of tfc_tpg_nacl_auth_cit */
 298
 299 CONFIGFS_EATTR_OPS(target_fabric_nacl_auth, se_node_acl, acl_auth_group);
 300
 301 static struct configfs_item_operations target_fabric_nacl_auth_item_ops = {
 302         .show_attribute         = target_fabric_nacl_auth_attr_show,
 303         .store_attribute        = target_fabric_nacl_auth_attr_store,
 304 };
 305
 306 TF_CIT_SETUP_DRV(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL);
 307
 308 /* End of tfc_tpg_nacl_auth_cit */
 309
 310 /* Start of tfc_tpg_nacl_param_cit */
 311
 312 CONFIGFS_EATTR_OPS(target_fabric_nacl_param, se_node_acl, acl_param_group);
 313
 314 static struct configfs_item_operations target_fabric_nacl_param_item_ops = {
 315         .show_attribute         = target_fabric_nacl_param_attr_show,
 316         .store_attribute        = target_fabric_nacl_param_attr_store,
 317 };
 318
 319 TF_CIT_SETUP_DRV(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL);
 320
 321 /* End of tfc_tpg_nacl_param_cit */
 322
 323 /* Start of tfc_tpg_nacl_base_cit */
 324
 325 CONFIGFS_EATTR_OPS(target_fabric_nacl_base, se_node_acl, acl_group);
 326
 327 static struct config_group *target_fabric_make_mappedlun(
 328         struct config_group *group,
 329         const char *name)
 330 {
 331         struct se_node_acl *se_nacl = container_of(group,
 332                         struct se_node_acl, acl_group);
 333         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 334         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 335         struct se_lun_acl *lacl = NULL;
 336         struct config_item *acl_ci;
 337         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 338         char *buf;
 339         unsigned long mapped_lun;
 340         int ret = 0;
 341
 342         acl_ci = &group->cg_item;
 343         if (!acl_ci) {
 344                 pr_err("Unable to locatel acl_ci\n");
 345                 return NULL;
 346         }
 347
 348         buf = kzalloc(strlen(name) + 1, GFP_KERNEL);
 349         if (!buf) {
 350                 pr_err("Unable to allocate memory for name buf\n");
 351                 return ERR_PTR(-ENOMEM);
 352         }
 353         snprintf(buf, strlen(name) + 1, "%s", name);
 354         /*
 355          * Make sure user is creating iscsi/$IQN/$TPGT/acls/$INITIATOR/lun_$ID.
 356          */
 357         if (strstr(buf, "lun_") != buf) {
 358                 pr_err("Unable to locate \"lun_\" from buf: %s"
 359                         " name: %s\n", buf, name);
 360                 ret = -EINVAL;
 361                 goto out;
 362         }
 363         /*
 364          * Determine the Mapped LUN value.  This is what the SCSI Initiator
 365          * Port will actually see.
 366          */
 367         ret = kstrtoul(buf + 4, 0, &mapped_lun);
 368         if (ret)
 369                 goto out;
 370         if (mapped_lun > UINT_MAX) {
 371                 ret = -EINVAL;
 372                 goto out;
 373         }
 374         if (mapped_lun > (TRANSPORT_MAX_LUNS_PER_TPG-1)) {
 375                 pr_err("Mapped LUN: %lu exceeds TRANSPORT_MAX_LUNS_PER_TPG"
 376                         "-1: %u for Target Portal Group: %u\n", mapped_lun,
 377                         TRANSPORT_MAX_LUNS_PER_TPG-1,
 378                         se_tpg->se_tpg_tfo->tpg_get_tag(se_tpg));
 379                 ret = -EINVAL;
 380                 goto out;
 381         }
 382
 383         lacl = core_dev_init_initiator_node_lun_acl(se_tpg, se_nacl,
 384                         mapped_lun, &ret);
 385         if (!lacl) {
 386                 ret = -EINVAL;
 387                 goto out;
 388         }
 389
 390         lacl_cg = &lacl->se_lun_group;
 391         lacl_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 392                                 GFP_KERNEL);
 393         if (!lacl_cg->default_groups) {
 394                 pr_err("Unable to allocate lacl_cg->default_groups\n");
 395                 ret = -ENOMEM;
 396                 goto out;
 397         }
 398
 399         config_group_init_type_name(&lacl->se_lun_group, name,
 400                         &tf->tf_tpg_mappedlun_cit);
 401         config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
 402                         "statistics", &tf->tf_tpg_mappedlun_stat_cit);
 403         lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
 404         lacl_cg->default_groups[1] = NULL;
 405
 406         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 407         ml_stat_grp->default_groups = kmalloc(sizeof(struct config_group *) * 3,
 408                                 GFP_KERNEL);
 409         if (!ml_stat_grp->default_groups) {
 410                 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
 411                 ret = -ENOMEM;
 412                 goto out;
 413         }
 414         target_stat_setup_mappedlun_default_groups(lacl);
 415
 416         kfree(buf);
 417         return &lacl->se_lun_group;
 418 out:
 419         if (lacl_cg)
 420                 kfree(lacl_cg->default_groups);
 421         kfree(lacl);
 422         kfree(buf);
 423         return ERR_PTR(ret);
 424 }
 425
 426 static void target_fabric_drop_mappedlun(
 427         struct config_group *group,
 428         struct config_item *item)
 429 {
 430         struct se_lun_acl *lacl = container_of(to_config_group(item),
 431                         struct se_lun_acl, se_lun_group);
 432         struct config_item *df_item;
 433         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 434         int i;
 435
 436         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 437         for (i = 0; ml_stat_grp->default_groups[i]; i++) {
 438                 df_item = &ml_stat_grp->default_groups[i]->cg_item;
 439                 ml_stat_grp->default_groups[i] = NULL;
 440                 config_item_put(df_item);
 441         }
 442         kfree(ml_stat_grp->default_groups);
 443
 444         lacl_cg = &lacl->se_lun_group;
 445         for (i = 0; lacl_cg->default_groups[i]; i++) {
 446                 df_item = &lacl_cg->default_groups[i]->cg_item;
 447                 lacl_cg->default_groups[i] = NULL;
 448                 config_item_put(df_item);
 449         }
 450         kfree(lacl_cg->default_groups);
 451
 452         config_item_put(item);
 453 }
 454
 455 static void target_fabric_nacl_base_release(struct config_item *item)
 456 {
 457         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 458                         struct se_node_acl, acl_group);
 459         struct target_fabric_configfs *tf = se_nacl->se_tpg->se_tpg_wwn->wwn_tf;
 460
 461         if (tf->tf_ops->fabric_cleanup_nodeacl)
 462                 tf->tf_ops->fabric_cleanup_nodeacl(se_nacl);
 463         core_tpg_del_initiator_node_acl(se_nacl);
 464 }
 465
 466 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
 467         .release                = target_fabric_nacl_base_release,
 468         .show_attribute         = target_fabric_nacl_base_attr_show,
 469         .store_attribute        = target_fabric_nacl_base_attr_store,
 470 };
 471
 472 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
 473         .make_group             = target_fabric_make_mappedlun,
 474         .drop_item              = target_fabric_drop_mappedlun,
 475 };
 476
 477 TF_CIT_SETUP_DRV(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
 478                 &target_fabric_nacl_base_group_ops);
 479
 480 /* End of tfc_tpg_nacl_base_cit */
 481
 482 /* Start of tfc_node_fabric_stats_cit */
 483 /*
 484  * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
 485  * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
 486  */
 487 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
 488
 489 /* End of tfc_wwn_fabric_stats_cit */
 490
 491 /* Start of tfc_tpg_nacl_cit */
 492
 493 static struct config_group *target_fabric_make_nodeacl(
 494         struct config_group *group,
 495         const char *name)
 496 {
 497         struct se_portal_group *se_tpg = container_of(group,
 498                         struct se_portal_group, tpg_acl_group);
 499         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 500         struct se_node_acl *se_nacl;
 501         struct config_group *nacl_cg;
 502
 503         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, name);
 504         if (IS_ERR(se_nacl))
 505                 return ERR_CAST(se_nacl);
 506
 507         if (tf->tf_ops->fabric_init_nodeacl) {
 508                 int ret = tf->tf_ops->fabric_init_nodeacl(se_nacl, name);
 509                 if (ret) {
 510                         core_tpg_del_initiator_node_acl(se_nacl);
 511                         return ERR_PTR(ret);
 512                 }
 513         }
 514
 515         nacl_cg = &se_nacl->acl_group;
 516         nacl_cg->default_groups = se_nacl->acl_default_groups;
 517         nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
 518         nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
 519         nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
 520         nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
 521         nacl_cg->default_groups[4] = NULL;
 522
 523         config_group_init_type_name(&se_nacl->acl_group, name,
 524                         &tf->tf_tpg_nacl_base_cit);
 525         config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
 526                         &tf->tf_tpg_nacl_attrib_cit);
 527         config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
 528                         &tf->tf_tpg_nacl_auth_cit);
 529         config_group_init_type_name(&se_nacl->acl_param_group, "param",
 530                         &tf->tf_tpg_nacl_param_cit);
 531         config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
 532                         "fabric_statistics", &tf->tf_tpg_nacl_stat_cit);
 533
 534         return &se_nacl->acl_group;
 535 }
 536
 537 static void target_fabric_drop_nodeacl(
 538         struct config_group *group,
 539         struct config_item *item)
 540 {
 541         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 542                         struct se_node_acl, acl_group);
 543         struct config_item *df_item;
 544         struct config_group *nacl_cg;
 545         int i;
 546
 547         nacl_cg = &se_nacl->acl_group;
 548         for (i = 0; nacl_cg->default_groups[i]; i++) {
 549                 df_item = &nacl_cg->default_groups[i]->cg_item;
 550                 nacl_cg->default_groups[i] = NULL;
 551                 config_item_put(df_item);
 552         }
 553         /*
 554          * struct se_node_acl free is done in target_fabric_nacl_base_release()
 555          */
 556         config_item_put(item);
 557 }
 558
 559 static struct configfs_group_operations target_fabric_nacl_group_ops = {
 560         .make_group     = target_fabric_make_nodeacl,
 561         .drop_item      = target_fabric_drop_nodeacl,
 562 };
 563
 564 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
 565
 566 /* End of tfc_tpg_nacl_cit */
 567
 568 /* Start of tfc_tpg_np_base_cit */
 569
 570 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
 571
 572 static void target_fabric_np_base_release(struct config_item *item)
 573 {
 574         struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
 575                                 struct se_tpg_np, tpg_np_group);
 576         struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
 577         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 578
 579         tf->tf_ops->fabric_drop_np(se_tpg_np);
 580 }
 581
 582 static struct configfs_item_operations target_fabric_np_base_item_ops = {
 583         .release                = target_fabric_np_base_release,
 584         .show_attribute         = target_fabric_np_base_attr_show,
 585         .store_attribute        = target_fabric_np_base_attr_store,
 586 };
 587
 588 TF_CIT_SETUP_DRV(tpg_np_base, &target_fabric_np_base_item_ops, NULL);
 589
 590 /* End of tfc_tpg_np_base_cit */
 591
 592 /* Start of tfc_tpg_np_cit */
 593
 594 static struct config_group *target_fabric_make_np(
 595         struct config_group *group,
 596         const char *name)
 597 {
 598         struct se_portal_group *se_tpg = container_of(group,
 599                                 struct se_portal_group, tpg_np_group);
 600         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 601         struct se_tpg_np *se_tpg_np;
 602
 603         if (!tf->tf_ops->fabric_make_np) {
 604                 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
 605                 return ERR_PTR(-ENOSYS);
 606         }
 607
 608         se_tpg_np = tf->tf_ops->fabric_make_np(se_tpg, group, name);
 609         if (!se_tpg_np || IS_ERR(se_tpg_np))
 610                 return ERR_PTR(-EINVAL);
 611
 612         se_tpg_np->tpg_np_parent = se_tpg;
 613         config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
 614                         &tf->tf_tpg_np_base_cit);
 615
 616         return &se_tpg_np->tpg_np_group;
 617 }
 618
 619 static void target_fabric_drop_np(
 620         struct config_group *group,
 621         struct config_item *item)
 622 {
 623         /*
 624          * struct se_tpg_np is released via target_fabric_np_base_release()
 625          */
 626         config_item_put(item);
 627 }
 628
 629 static struct configfs_group_operations target_fabric_np_group_ops = {
 630         .make_group     = &target_fabric_make_np,
 631         .drop_item      = &target_fabric_drop_np,
 632 };
 633
 634 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
 635
 636 /* End of tfc_tpg_np_cit */
 637
 638 /* Start of tfc_tpg_port_cit */
 639
 640 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
 641 #define TCM_PORT_ATTR(_name, _mode)                                     \
 642 static struct target_fabric_port_attribute target_fabric_port_##_name = \
 643         __CONFIGFS_EATTR(_name, _mode,                                  \
 644         target_fabric_port_show_attr_##_name,                           \
 645         target_fabric_port_store_attr_##_name);
 646
 647 #define TCM_PORT_ATTOR_RO(_name)                                        \
 648         __CONFIGFS_EATTR_RO(_name,                                      \
 649         target_fabric_port_show_attr_##_name);
 650
 651 /*
 652  * alua_tg_pt_gp
 653  */
 654 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
 655         struct se_lun *lun,
 656         char *page)
 657 {
 658         if (!lun || !lun->lun_sep)
 659                 return -ENODEV;
 660
 661         return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
 662 }
 663
 664 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
 665         struct se_lun *lun,
 666         const char *page,
 667         size_t count)
 668 {
 669         if (!lun || !lun->lun_sep)
 670                 return -ENODEV;
 671
 672         return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
 673 }
 674
 675 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
 676
 677 /*
 678  * alua_tg_pt_offline
 679  */
 680 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
 681         struct se_lun *lun,
 682         char *page)
 683 {
 684         if (!lun || !lun->lun_sep)
 685                 return -ENODEV;
 686
 687         return core_alua_show_offline_bit(lun, page);
 688 }
 689
 690 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
 691         struct se_lun *lun,
 692         const char *page,
 693         size_t count)
 694 {
 695         if (!lun || !lun->lun_sep)
 696                 return -ENODEV;
 697
 698         return core_alua_store_offline_bit(lun, page, count);
 699 }
 700
 701 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
 702
 703 /*
 704  * alua_tg_pt_status
 705  */
 706 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
 707         struct se_lun *lun,
 708         char *page)
 709 {
 710         if (!lun || !lun->lun_sep)
 711                 return -ENODEV;
 712
 713         return core_alua_show_secondary_status(lun, page);
 714 }
 715
 716 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
 717         struct se_lun *lun,
 718         const char *page,
 719         size_t count)
 720 {
 721         if (!lun || !lun->lun_sep)
 722                 return -ENODEV;
 723
 724         return core_alua_store_secondary_status(lun, page, count);
 725 }
 726
 727 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
 728
 729 /*
 730  * alua_tg_pt_write_md
 731  */
 732 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
 733         struct se_lun *lun,
 734         char *page)
 735 {
 736         if (!lun || !lun->lun_sep)
 737                 return -ENODEV;
 738
 739         return core_alua_show_secondary_write_metadata(lun, page);
 740 }
 741
 742 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
 743         struct se_lun *lun,
 744         const char *page,
 745         size_t count)
 746 {
 747         if (!lun || !lun->lun_sep)
 748                 return -ENODEV;
 749
 750         return core_alua_store_secondary_write_metadata(lun, page, count);
 751 }
 752
 753 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
 754
 755
 756 static struct configfs_attribute *target_fabric_port_attrs[] = {
 757         &target_fabric_port_alua_tg_pt_gp.attr,
 758         &target_fabric_port_alua_tg_pt_offline.attr,
 759         &target_fabric_port_alua_tg_pt_status.attr,
 760         &target_fabric_port_alua_tg_pt_write_md.attr,
 761         NULL,
 762 };
 763
 764 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
 765
 766 static int target_fabric_port_link(
 767         struct config_item *lun_ci,
 768         struct config_item *se_dev_ci)
 769 {
 770         struct config_item *tpg_ci;
 771         struct se_lun *lun = container_of(to_config_group(lun_ci),
 772                                 struct se_lun, lun_group);
 773         struct se_lun *lun_p;
 774         struct se_portal_group *se_tpg;
 775         struct se_device *dev =
 776                 container_of(to_config_group(se_dev_ci), struct se_device, dev_group);
 777         struct target_fabric_configfs *tf;
 778         int ret;
 779
 780         if (dev->dev_link_magic != SE_DEV_LINK_MAGIC) {
 781                 pr_err("Bad dev->dev_link_magic, not a valid se_dev_ci pointer:"
 782                         " %p to struct se_device: %p\n", se_dev_ci, dev);
 783                 return -EFAULT;
 784         }
 785
 786         if (!(dev->dev_flags & DF_CONFIGURED)) {
 787                 pr_err("se_device not configured yet, cannot port link\n");
 788                 return -ENODEV;
 789         }
 790
 791         tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
 792         se_tpg = container_of(to_config_group(tpg_ci),
 793                                 struct se_portal_group, tpg_group);
 794         tf = se_tpg->se_tpg_wwn->wwn_tf;
 795
 796         if (lun->lun_se_dev !=  NULL) {
 797                 pr_err("Port Symlink already exists\n");
 798                 return -EEXIST;
 799         }
 800
 801         lun_p = core_dev_add_lun(se_tpg, dev, lun->unpacked_lun);
 802         if (IS_ERR(lun_p)) {
 803                 pr_err("core_dev_add_lun() failed\n");
 804                 ret = PTR_ERR(lun_p);
 805                 goto out;
 806         }
 807
 808         if (tf->tf_ops->fabric_post_link) {
 809                 /*
 810                  * Call the optional fabric_post_link() to allow a
 811                  * fabric module to setup any additional state once
 812                  * core_dev_add_lun() has been called..
 813                  */
 814                 tf->tf_ops->fabric_post_link(se_tpg, lun);
 815         }
 816
 817         return 0;
 818 out:
 819         return ret;
 820 }
 821
 822 static int target_fabric_port_unlink(
 823         struct config_item *lun_ci,
 824         struct config_item *se_dev_ci)
 825 {
 826         struct se_lun *lun = container_of(to_config_group(lun_ci),
 827                                 struct se_lun, lun_group);
 828         struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
 829         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 830
 831         if (tf->tf_ops->fabric_pre_unlink) {
 832                 /*
 833                  * Call the optional fabric_pre_unlink() to allow a
 834                  * fabric module to release any additional stat before
 835                  * core_dev_del_lun() is called.
 836                 */
 837                 tf->tf_ops->fabric_pre_unlink(se_tpg, lun);
 838         }
 839
 840         core_dev_del_lun(se_tpg, lun);
 841         return 0;
 842 }
 843
 844 static struct configfs_item_operations target_fabric_port_item_ops = {
 845         .show_attribute         = target_fabric_port_attr_show,
 846         .store_attribute        = target_fabric_port_attr_store,
 847         .allow_link             = target_fabric_port_link,
 848         .drop_link              = target_fabric_port_unlink,
 849 };
 850
 851 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
 852
 853 /* End of tfc_tpg_port_cit */
 854
 855 /* Start of tfc_tpg_port_stat_cit */
 856
 857 static struct config_group *target_core_port_stat_mkdir(
 858         struct config_group *group,
 859         const char *name)
 860 {
 861         return ERR_PTR(-ENOSYS);
 862 }
 863
 864 static void target_core_port_stat_rmdir(
 865         struct config_group *group,
 866         struct config_item *item)
 867 {
 868         return;
 869 }
 870
 871 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
 872         .make_group             = target_core_port_stat_mkdir,
 873         .drop_item              = target_core_port_stat_rmdir,
 874 };
 875
 876 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
 877
 878 /* End of tfc_tpg_port_stat_cit */
 879
 880 /* Start of tfc_tpg_lun_cit */
 881
 882 static struct config_group *target_fabric_make_lun(
 883         struct config_group *group,
 884         const char *name)
 885 {
 886         struct se_lun *lun;
 887         struct se_portal_group *se_tpg = container_of(group,
 888                         struct se_portal_group, tpg_lun_group);
 889         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 890         struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
 891         unsigned long unpacked_lun;
 892         int errno;
 893
 894         if (strstr(name, "lun_") != name) {
 895                 pr_err("Unable to locate \'_\" in"
 896                                 " \"lun_$LUN_NUMBER\"\n");
 897                 return ERR_PTR(-EINVAL);
 898         }
 899         errno = kstrtoul(name + 4, 0, &unpacked_lun);
 900         if (errno)
 901                 return ERR_PTR(errno);
 902         if (unpacked_lun > UINT_MAX)
 903                 return ERR_PTR(-EINVAL);
 904
 905         lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
 906         if (!lun)
 907                 return ERR_PTR(-EINVAL);
 908
 909         lun_cg = &lun->lun_group;
 910         lun_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 911                                 GFP_KERNEL);
 912         if (!lun_cg->default_groups) {
 913                 pr_err("Unable to allocate lun_cg->default_groups\n");
 914                 return ERR_PTR(-ENOMEM);
 915         }
 916
 917         config_group_init_type_name(&lun->lun_group, name,
 918                         &tf->tf_tpg_port_cit);
 919         config_group_init_type_name(&lun->port_stat_grps.stat_group,
 920                         "statistics", &tf->tf_tpg_port_stat_cit);
 921         lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
 922         lun_cg->default_groups[1] = NULL;
 923
 924         port_stat_grp = &lun->port_stat_grps.stat_group;
 925         port_stat_grp->default_groups =  kzalloc(sizeof(struct config_group *) * 4,
 926                                 GFP_KERNEL);
 927         if (!port_stat_grp->default_groups) {
 928                 pr_err("Unable to allocate port_stat_grp->default_groups\n");
 929                 kfree(lun_cg->default_groups);
 930                 return ERR_PTR(-ENOMEM);
 931         }
 932         target_stat_setup_port_default_groups(lun);
 933
 934         return &lun->lun_group;
 935 }
 936
 937 static void target_fabric_drop_lun(
 938         struct config_group *group,
 939         struct config_item *item)
 940 {
 941         struct se_lun *lun = container_of(to_config_group(item),
 942                                 struct se_lun, lun_group);
 943         struct config_item *df_item;
 944         struct config_group *lun_cg, *port_stat_grp;
 945         int i;
 946
 947         port_stat_grp = &lun->port_stat_grps.stat_group;
 948         for (i = 0; port_stat_grp->default_groups[i]; i++) {
 949                 df_item = &port_stat_grp->default_groups[i]->cg_item;
 950                 port_stat_grp->default_groups[i] = NULL;
 951                 config_item_put(df_item);
 952         }
 953         kfree(port_stat_grp->default_groups);
 954
 955         lun_cg = &lun->lun_group;
 956         for (i = 0; lun_cg->default_groups[i]; i++) {
 957                 df_item = &lun_cg->default_groups[i]->cg_item;
 958                 lun_cg->default_groups[i] = NULL;
 959                 config_item_put(df_item);
 960         }
 961         kfree(lun_cg->default_groups);
 962
 963         config_item_put(item);
 964 }
 965
 966 static struct configfs_group_operations target_fabric_lun_group_ops = {
 967         .make_group     = &target_fabric_make_lun,
 968         .drop_item      = &target_fabric_drop_lun,
 969 };
 970
 971 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
 972
 973 /* End of tfc_tpg_lun_cit */
 974
 975 /* Start of tfc_tpg_attrib_cit */
 976
 977 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
 978
 979 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
 980         .show_attribute         = target_fabric_tpg_attrib_attr_show,
 981         .store_attribute        = target_fabric_tpg_attrib_attr_store,
 982 };
 983
 984 TF_CIT_SETUP_DRV(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL);
 985
 986 /* End of tfc_tpg_attrib_cit */
 987
 988 /* Start of tfc_tpg_auth_cit */
 989
 990 CONFIGFS_EATTR_OPS(target_fabric_tpg_auth, se_portal_group, tpg_auth_group);
 991
 992 static struct configfs_item_operations target_fabric_tpg_auth_item_ops = {
 993         .show_attribute         = target_fabric_tpg_auth_attr_show,
 994         .store_attribute        = target_fabric_tpg_auth_attr_store,
 995 };
 996
 997 TF_CIT_SETUP_DRV(tpg_auth, &target_fabric_tpg_auth_item_ops, NULL);
 998
 999 /* End of tfc_tpg_attrib_cit */
1000
1001 /* Start of tfc_tpg_param_cit */
1002
1003 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
1004
1005 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
1006         .show_attribute         = target_fabric_tpg_param_attr_show,
1007         .store_attribute        = target_fabric_tpg_param_attr_store,
1008 };
1009
1010 TF_CIT_SETUP_DRV(tpg_param, &target_fabric_tpg_param_item_ops, NULL);
1011
1012 /* End of tfc_tpg_param_cit */
1013
1014 /* Start of tfc_tpg_base_cit */
1015 /*
1016  * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
1017  */
1018 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
1019
1020 static void target_fabric_tpg_release(struct config_item *item)
1021 {
1022         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1023                         struct se_portal_group, tpg_group);
1024         struct se_wwn *wwn = se_tpg->se_tpg_wwn;
1025         struct target_fabric_configfs *tf = wwn->wwn_tf;
1026
1027         tf->tf_ops->fabric_drop_tpg(se_tpg);
1028 }
1029
1030 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
1031         .release                = target_fabric_tpg_release,
1032         .show_attribute         = target_fabric_tpg_attr_show,
1033         .store_attribute        = target_fabric_tpg_attr_store,
1034 };
1035
1036 TF_CIT_SETUP_DRV(tpg_base, &target_fabric_tpg_base_item_ops, NULL);
1037
1038 /* End of tfc_tpg_base_cit */
1039
1040 /* Start of tfc_tpg_cit */
1041
1042 static struct config_group *target_fabric_make_tpg(
1043         struct config_group *group,
1044         const char *name)
1045 {
1046         struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1047         struct target_fabric_configfs *tf = wwn->wwn_tf;
1048         struct se_portal_group *se_tpg;
1049
1050         if (!tf->tf_ops->fabric_make_tpg) {
1051                 pr_err("tf->tf_ops->fabric_make_tpg is NULL\n");
1052                 return ERR_PTR(-ENOSYS);
1053         }
1054
1055         se_tpg = tf->tf_ops->fabric_make_tpg(wwn, group, name);
1056         if (!se_tpg || IS_ERR(se_tpg))
1057                 return ERR_PTR(-EINVAL);
1058         /*
1059          * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1060          */
1061         se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1062         se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1063         se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1064         se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1065         se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1066         se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_auth_group;
1067         se_tpg->tpg_group.default_groups[5] = &se_tpg->tpg_param_group;
1068         se_tpg->tpg_group.default_groups[6] = NULL;
1069
1070         config_group_init_type_name(&se_tpg->tpg_group, name,
1071                         &tf->tf_tpg_base_cit);
1072         config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1073                         &tf->tf_tpg_lun_cit);
1074         config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1075                         &tf->tf_tpg_np_cit);
1076         config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1077                         &tf->tf_tpg_nacl_cit);
1078         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1079                         &tf->tf_tpg_attrib_cit);
1080         config_group_init_type_name(&se_tpg->tpg_auth_group, "auth",
1081                         &tf->tf_tpg_auth_cit);
1082         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1083                         &tf->tf_tpg_param_cit);
1084
1085         return &se_tpg->tpg_group;
1086 }
1087
1088 static void target_fabric_drop_tpg(
1089         struct config_group *group,
1090         struct config_item *item)
1091 {
1092         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1093                                 struct se_portal_group, tpg_group);
1094         struct config_group *tpg_cg = &se_tpg->tpg_group;
1095         struct config_item *df_item;
1096         int i;
1097         /*
1098          * Release default groups, but do not release tpg_cg->default_groups
1099          * memory as it is statically allocated at se_tpg->tpg_default_groups.
1100          */
1101         for (i = 0; tpg_cg->default_groups[i]; i++) {
1102                 df_item = &tpg_cg->default_groups[i]->cg_item;
1103                 tpg_cg->default_groups[i] = NULL;
1104                 config_item_put(df_item);
1105         }
1106
1107         config_item_put(item);
1108 }
1109
1110 static void target_fabric_release_wwn(struct config_item *item)
1111 {
1112         struct se_wwn *wwn = container_of(to_config_group(item),
1113                                 struct se_wwn, wwn_group);
1114         struct target_fabric_configfs *tf = wwn->wwn_tf;
1115
1116         tf->tf_ops->fabric_drop_wwn(wwn);
1117 }
1118
1119 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1120         .release        = target_fabric_release_wwn,
1121 };
1122
1123 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1124         .make_group     = target_fabric_make_tpg,
1125         .drop_item      = target_fabric_drop_tpg,
1126 };
1127
1128 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1129                 NULL);
1130
1131 /* End of tfc_tpg_cit */
1132
1133 /* Start of tfc_wwn_fabric_stats_cit */
1134 /*
1135  * This is used as a placeholder for struct se_wwn->fabric_stat_group
1136  * to allow fabrics access to ->fabric_stat_group->default_groups[]
1137  */
1138 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1139
1140 /* End of tfc_wwn_fabric_stats_cit */
1141
1142 /* Start of tfc_wwn_cit */
1143
1144 static struct config_group *target_fabric_make_wwn(
1145         struct config_group *group,
1146         const char *name)
1147 {
1148         struct target_fabric_configfs *tf = container_of(group,
1149                                 struct target_fabric_configfs, tf_group);
1150         struct se_wwn *wwn;
1151
1152         if (!tf->tf_ops->fabric_make_wwn) {
1153                 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1154                 return ERR_PTR(-ENOSYS);
1155         }
1156
1157         wwn = tf->tf_ops->fabric_make_wwn(tf, group, name);
1158         if (!wwn || IS_ERR(wwn))
1159                 return ERR_PTR(-EINVAL);
1160
1161         wwn->wwn_tf = tf;
1162         /*
1163          * Setup default groups from pre-allocated wwn->wwn_default_groups
1164          */
1165         wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1166         wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1167         wwn->wwn_group.default_groups[1] = NULL;
1168
1169         config_group_init_type_name(&wwn->wwn_group, name, &tf->tf_tpg_cit);
1170         config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1171                         &tf->tf_wwn_fabric_stats_cit);
1172
1173         return &wwn->wwn_group;
1174 }
1175
1176 static void target_fabric_drop_wwn(
1177         struct config_group *group,
1178         struct config_item *item)
1179 {
1180         struct se_wwn *wwn = container_of(to_config_group(item),
1181                                 struct se_wwn, wwn_group);
1182         struct config_item *df_item;
1183         struct config_group *cg = &wwn->wwn_group;
1184         int i;
1185
1186         for (i = 0; cg->default_groups[i]; i++) {
1187                 df_item = &cg->default_groups[i]->cg_item;
1188                 cg->default_groups[i] = NULL;
1189                 config_item_put(df_item);
1190         }
1191
1192         config_item_put(item);
1193 }
1194
1195 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1196         .make_group     = target_fabric_make_wwn,
1197         .drop_item      = target_fabric_drop_wwn,
1198 };
1199 /*
1200  * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1201  */
1202 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1203
1204 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1205         .show_attribute         = target_fabric_wwn_attr_show,
1206         .store_attribute        = target_fabric_wwn_attr_store,
1207 };
1208
1209 TF_CIT_SETUP_DRV(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops);
1210
1211 /* End of tfc_wwn_cit */
1212
1213 /* Start of tfc_discovery_cit */
1214
1215 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1216                 tf_disc_group);
1217
1218 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1219         .show_attribute         = target_fabric_discovery_attr_show,
1220         .store_attribute        = target_fabric_discovery_attr_store,
1221 };
1222
1223 TF_CIT_SETUP_DRV(discovery, &target_fabric_discovery_item_ops, NULL);
1224
1225 /* End of tfc_discovery_cit */
1226
1227 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1228 {
1229         target_fabric_setup_discovery_cit(tf);
1230         target_fabric_setup_wwn_cit(tf);
1231         target_fabric_setup_wwn_fabric_stats_cit(tf);
1232         target_fabric_setup_tpg_cit(tf);
1233         target_fabric_setup_tpg_base_cit(tf);
1234         target_fabric_setup_tpg_port_cit(tf);
1235         target_fabric_setup_tpg_port_stat_cit(tf);
1236         target_fabric_setup_tpg_lun_cit(tf);
1237         target_fabric_setup_tpg_np_cit(tf);
1238         target_fabric_setup_tpg_np_base_cit(tf);
1239         target_fabric_setup_tpg_attrib_cit(tf);
1240         target_fabric_setup_tpg_auth_cit(tf);
1241         target_fabric_setup_tpg_param_cit(tf);
1242         target_fabric_setup_tpg_nacl_cit(tf);
1243         target_fabric_setup_tpg_nacl_base_cit(tf);
1244         target_fabric_setup_tpg_nacl_attrib_cit(tf);
1245         target_fabric_setup_tpg_nacl_auth_cit(tf);
1246         target_fabric_setup_tpg_nacl_param_cit(tf);
1247         target_fabric_setup_tpg_nacl_stat_cit(tf);
1248         target_fabric_setup_tpg_mappedlun_cit(tf);
1249         target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1250
1251         return 0;
1252 }