drivers/target/target_core_fabric_configfs.c

   1 /*******************************************************************************
   2 * Filename: target_core_fabric_configfs.c
   3  *
   4  * This file contains generic fabric module configfs infrastructure for
   5  * TCM v4.x code
   6  *
   7  * Copyright (c) 2010,2011 Rising Tide Systems
   8  * Copyright (c) 2010,2011 Linux-iSCSI.org
   9  *
  10  * Copyright (c) Nicholas A. Bellinger <nab@linux-iscsi.org>
  11 *
  12  * This program is free software; you can redistribute it and/or modify
  13  * it under the terms of the GNU General Public License as published by
  14  * the Free Software Foundation; either version 2 of the License, or
  15  * (at your option) any later version.
  16  *
  17  * This program is distributed in the hope that it will be useful,
  18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  20  * GNU General Public License for more details.
  21  ****************************************************************************/
  22
  23 #include <linux/module.h>
  24 #include <linux/moduleparam.h>
  25 #include <generated/utsrelease.h>
  26 #include <linux/utsname.h>
  27 #include <linux/init.h>
  28 #include <linux/fs.h>
  29 #include <linux/namei.h>
  30 #include <linux/slab.h>
  31 #include <linux/types.h>
  32 #include <linux/delay.h>
  33 #include <linux/unistd.h>
  34 #include <linux/string.h>
  35 #include <linux/syscalls.h>
  36 #include <linux/configfs.h>
  37
  38 #include <target/target_core_base.h>
  39 #include <target/target_core_device.h>
  40 #include <target/target_core_tpg.h>
  41 #include <target/target_core_transport.h>
  42 #include <target/target_core_fabric_ops.h>
  43 #include <target/target_core_fabric_configfs.h>
  44 #include <target/target_core_configfs.h>
  45 #include <target/configfs_macros.h>
  46
  47 #include "target_core_internal.h"
  48 #include "target_core_alua.h"
  49 #include "target_core_pr.h"
  50
  51 #define TF_CIT_SETUP(_name, _item_ops, _group_ops, _attrs)              \
  52 static void target_fabric_setup_##_name##_cit(struct target_fabric_configfs *tf) \
  53 {                                                                       \
  54         struct target_fabric_configfs_template *tfc = &tf->tf_cit_tmpl; \
  55         struct config_item_type *cit = &tfc->tfc_##_name##_cit;         \
  56                                                                         \
  57         cit->ct_item_ops = _item_ops;                                   \
  58         cit->ct_group_ops = _group_ops;                                 \
  59         cit->ct_attrs = _attrs;                                         \
  60         cit->ct_owner = tf->tf_module;                                  \
  61         pr_debug("Setup generic %s\n", __stringify(_name));             \
  62 }
  63
  64 /* Start of tfc_tpg_mappedlun_cit */
  65
  66 static int target_fabric_mappedlun_link(
  67         struct config_item *lun_acl_ci,
  68         struct config_item *lun_ci)
  69 {
  70         struct se_dev_entry *deve;
  71         struct se_lun *lun = container_of(to_config_group(lun_ci),
  72                         struct se_lun, lun_group);
  73         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
  74                         struct se_lun_acl, se_lun_group);
  75         struct se_portal_group *se_tpg;
  76         struct config_item *nacl_ci, *tpg_ci, *tpg_ci_s, *wwn_ci, *wwn_ci_s;
  77         int ret = 0, lun_access;
  78         /*
  79          * Ensure that the source port exists
  80          */
  81         if (!lun->lun_sep || !lun->lun_sep->sep_tpg) {
  82                 pr_err("Source se_lun->lun_sep or lun->lun_sep->sep"
  83                                 "_tpg does not exist\n");
  84                 return -EINVAL;
  85         }
  86         se_tpg = lun->lun_sep->sep_tpg;
  87
  88         nacl_ci = &lun_acl_ci->ci_parent->ci_group->cg_item;
  89         tpg_ci = &nacl_ci->ci_group->cg_item;
  90         wwn_ci = &tpg_ci->ci_group->cg_item;
  91         tpg_ci_s = &lun_ci->ci_parent->ci_group->cg_item;
  92         wwn_ci_s = &tpg_ci_s->ci_group->cg_item;
  93         /*
  94          * Make sure the SymLink is going to the same $FABRIC/$WWN/tpgt_$TPGT
  95          */
  96         if (strcmp(config_item_name(wwn_ci), config_item_name(wwn_ci_s))) {
  97                 pr_err("Illegal Initiator ACL SymLink outside of %s\n",
  98                         config_item_name(wwn_ci));
  99                 return -EINVAL;
 100         }
 101         if (strcmp(config_item_name(tpg_ci), config_item_name(tpg_ci_s))) {
 102                 pr_err("Illegal Initiator ACL Symlink outside of %s"
 103                         " TPGT: %s\n", config_item_name(wwn_ci),
 104                         config_item_name(tpg_ci));
 105                 return -EINVAL;
 106         }
 107         /*
 108          * If this struct se_node_acl was dynamically generated with
 109          * tpg_1/attrib/generate_node_acls=1, use the existing deve->lun_flags,
 110          * which be will write protected (READ-ONLY) when
 111          * tpg_1/attrib/demo_mode_write_protect=1
 112          */
 113         spin_lock_irq(&lacl->se_lun_nacl->device_list_lock);
 114         deve = &lacl->se_lun_nacl->device_list[lacl->mapped_lun];
 115         if (deve->lun_flags & TRANSPORT_LUNFLAGS_INITIATOR_ACCESS)
 116                 lun_access = deve->lun_flags;
 117         else
 118                 lun_access =
 119                         (se_tpg->se_tpg_tfo->tpg_check_prod_mode_write_protect(
 120                                 se_tpg)) ? TRANSPORT_LUNFLAGS_READ_ONLY :
 121                                            TRANSPORT_LUNFLAGS_READ_WRITE;
 122         spin_unlock_irq(&lacl->se_lun_nacl->device_list_lock);
 123         /*
 124          * Determine the actual mapped LUN value user wants..
 125          *
 126          * This value is what the SCSI Initiator actually sees the
 127          * iscsi/$IQN/$TPGT/lun/lun_* as on their SCSI Initiator Ports.
 128          */
 129         ret = core_dev_add_initiator_node_lun_acl(se_tpg, lacl,
 130                         lun->unpacked_lun, lun_access);
 131
 132         return (ret < 0) ? -EINVAL : 0;
 133 }
 134
 135 static int target_fabric_mappedlun_unlink(
 136         struct config_item *lun_acl_ci,
 137         struct config_item *lun_ci)
 138 {
 139         struct se_lun *lun;
 140         struct se_lun_acl *lacl = container_of(to_config_group(lun_acl_ci),
 141                         struct se_lun_acl, se_lun_group);
 142         struct se_node_acl *nacl = lacl->se_lun_nacl;
 143         struct se_dev_entry *deve = &nacl->device_list[lacl->mapped_lun];
 144         struct se_portal_group *se_tpg;
 145         /*
 146          * Determine if the underlying MappedLUN has already been released..
 147          */
 148         if (!deve->se_lun)
 149                 return 0;
 150
 151         lun = container_of(to_config_group(lun_ci), struct se_lun, lun_group);
 152         se_tpg = lun->lun_sep->sep_tpg;
 153
 154         core_dev_del_initiator_node_lun_acl(se_tpg, lun, lacl);
 155         return 0;
 156 }
 157
 158 CONFIGFS_EATTR_STRUCT(target_fabric_mappedlun, se_lun_acl);
 159 #define TCM_MAPPEDLUN_ATTR(_name, _mode)                                \
 160 static struct target_fabric_mappedlun_attribute target_fabric_mappedlun_##_name = \
 161         __CONFIGFS_EATTR(_name, _mode,                                  \
 162         target_fabric_mappedlun_show_##_name,                           \
 163         target_fabric_mappedlun_store_##_name);
 164
 165 static ssize_t target_fabric_mappedlun_show_write_protect(
 166         struct se_lun_acl *lacl,
 167         char *page)
 168 {
 169         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 170         struct se_dev_entry *deve;
 171         ssize_t len;
 172
 173         spin_lock_irq(&se_nacl->device_list_lock);
 174         deve = &se_nacl->device_list[lacl->mapped_lun];
 175         len = sprintf(page, "%d\n",
 176                         (deve->lun_flags & TRANSPORT_LUNFLAGS_READ_ONLY) ?
 177                         1 : 0);
 178         spin_unlock_irq(&se_nacl->device_list_lock);
 179
 180         return len;
 181 }
 182
 183 static ssize_t target_fabric_mappedlun_store_write_protect(
 184         struct se_lun_acl *lacl,
 185         const char *page,
 186         size_t count)
 187 {
 188         struct se_node_acl *se_nacl = lacl->se_lun_nacl;
 189         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 190         unsigned long op;
 191
 192         if (strict_strtoul(page, 0, &op))
 193                 return -EINVAL;
 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: %u Write Protect bit to %s\n",
 205                 se_tpg->se_tpg_tfo->get_fabric_name(),
 206                 lacl->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(tpg_nacl_attrib, &target_fabric_nacl_attrib_item_ops, NULL, 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(tpg_nacl_auth, &target_fabric_nacl_auth_item_ops, NULL, 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(tpg_nacl_param, &target_fabric_nacl_param_item_ops, NULL, 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;
 321         struct config_item *acl_ci;
 322         struct config_group *lacl_cg = NULL, *ml_stat_grp = NULL;
 323         char *buf;
 324         unsigned 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         if (strict_strtoul(buf + 4, 0, &mapped_lun) || mapped_lun > UINT_MAX) {
 353                 ret = -EINVAL;
 354                 goto out;
 355         }
 356
 357         lacl = core_dev_init_initiator_node_lun_acl(se_tpg, mapped_lun,
 358                         config_item_name(acl_ci), &ret);
 359         if (!lacl) {
 360                 ret = -EINVAL;
 361                 goto out;
 362         }
 363
 364         lacl_cg = &lacl->se_lun_group;
 365         lacl_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
 366                                 GFP_KERNEL);
 367         if (!lacl_cg->default_groups) {
 368                 pr_err("Unable to allocate lacl_cg->default_groups\n");
 369                 ret = -ENOMEM;
 370                 goto out;
 371         }
 372
 373         config_group_init_type_name(&lacl->se_lun_group, name,
 374                         &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_cit);
 375         config_group_init_type_name(&lacl->ml_stat_grps.stat_group,
 376                         "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_mappedlun_stat_cit);
 377         lacl_cg->default_groups[0] = &lacl->ml_stat_grps.stat_group;
 378         lacl_cg->default_groups[1] = NULL;
 379
 380         ml_stat_grp = &lacl->ml_stat_grps.stat_group;
 381         ml_stat_grp->default_groups = kzalloc(sizeof(struct config_group) * 3,
 382                                 GFP_KERNEL);
 383         if (!ml_stat_grp->default_groups) {
 384                 pr_err("Unable to allocate ml_stat_grp->default_groups\n");
 385                 ret = -ENOMEM;
 386                 goto out;
 387         }
 388         target_stat_setup_mappedlun_default_groups(lacl);
 389
 390         kfree(buf);
 391         return &lacl->se_lun_group;
 392 out:
 393         if (lacl_cg)
 394                 kfree(lacl_cg->default_groups);
 395         kfree(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 se_portal_group *se_tpg = se_nacl->se_tpg;
 433         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 434
 435         tf->tf_ops.fabric_drop_nodeacl(se_nacl);
 436 }
 437
 438 static struct configfs_item_operations target_fabric_nacl_base_item_ops = {
 439         .release                = target_fabric_nacl_base_release,
 440         .show_attribute         = target_fabric_nacl_base_attr_show,
 441         .store_attribute        = target_fabric_nacl_base_attr_store,
 442 };
 443
 444 static struct configfs_group_operations target_fabric_nacl_base_group_ops = {
 445         .make_group             = target_fabric_make_mappedlun,
 446         .drop_item              = target_fabric_drop_mappedlun,
 447 };
 448
 449 TF_CIT_SETUP(tpg_nacl_base, &target_fabric_nacl_base_item_ops,
 450                 &target_fabric_nacl_base_group_ops, NULL);
 451
 452 /* End of tfc_tpg_nacl_base_cit */
 453
 454 /* Start of tfc_node_fabric_stats_cit */
 455 /*
 456  * This is used as a placeholder for struct se_node_acl->acl_fabric_stat_group
 457  * to allow fabrics access to ->acl_fabric_stat_group->default_groups[]
 458  */
 459 TF_CIT_SETUP(tpg_nacl_stat, NULL, NULL, NULL);
 460
 461 /* End of tfc_wwn_fabric_stats_cit */
 462
 463 /* Start of tfc_tpg_nacl_cit */
 464
 465 static struct config_group *target_fabric_make_nodeacl(
 466         struct config_group *group,
 467         const char *name)
 468 {
 469         struct se_portal_group *se_tpg = container_of(group,
 470                         struct se_portal_group, tpg_acl_group);
 471         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 472         struct se_node_acl *se_nacl;
 473         struct config_group *nacl_cg;
 474
 475         if (!tf->tf_ops.fabric_make_nodeacl) {
 476                 pr_err("tf->tf_ops.fabric_make_nodeacl is NULL\n");
 477                 return ERR_PTR(-ENOSYS);
 478         }
 479
 480         se_nacl = tf->tf_ops.fabric_make_nodeacl(se_tpg, group, name);
 481         if (IS_ERR(se_nacl))
 482                 return ERR_CAST(se_nacl);
 483
 484         nacl_cg = &se_nacl->acl_group;
 485         nacl_cg->default_groups = se_nacl->acl_default_groups;
 486         nacl_cg->default_groups[0] = &se_nacl->acl_attrib_group;
 487         nacl_cg->default_groups[1] = &se_nacl->acl_auth_group;
 488         nacl_cg->default_groups[2] = &se_nacl->acl_param_group;
 489         nacl_cg->default_groups[3] = &se_nacl->acl_fabric_stat_group;
 490         nacl_cg->default_groups[4] = NULL;
 491
 492         config_group_init_type_name(&se_nacl->acl_group, name,
 493                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_base_cit);
 494         config_group_init_type_name(&se_nacl->acl_attrib_group, "attrib",
 495                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_attrib_cit);
 496         config_group_init_type_name(&se_nacl->acl_auth_group, "auth",
 497                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_auth_cit);
 498         config_group_init_type_name(&se_nacl->acl_param_group, "param",
 499                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_param_cit);
 500         config_group_init_type_name(&se_nacl->acl_fabric_stat_group,
 501                         "fabric_statistics",
 502                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_stat_cit);
 503
 504         return &se_nacl->acl_group;
 505 }
 506
 507 static void target_fabric_drop_nodeacl(
 508         struct config_group *group,
 509         struct config_item *item)
 510 {
 511         struct se_node_acl *se_nacl = container_of(to_config_group(item),
 512                         struct se_node_acl, acl_group);
 513         struct config_item *df_item;
 514         struct config_group *nacl_cg;
 515         int i;
 516
 517         nacl_cg = &se_nacl->acl_group;
 518         for (i = 0; nacl_cg->default_groups[i]; i++) {
 519                 df_item = &nacl_cg->default_groups[i]->cg_item;
 520                 nacl_cg->default_groups[i] = NULL;
 521                 config_item_put(df_item);
 522         }
 523         /*
 524          * struct se_node_acl free is done in target_fabric_nacl_base_release()
 525          */
 526         config_item_put(item);
 527 }
 528
 529 static struct configfs_group_operations target_fabric_nacl_group_ops = {
 530         .make_group     = target_fabric_make_nodeacl,
 531         .drop_item      = target_fabric_drop_nodeacl,
 532 };
 533
 534 TF_CIT_SETUP(tpg_nacl, NULL, &target_fabric_nacl_group_ops, NULL);
 535
 536 /* End of tfc_tpg_nacl_cit */
 537
 538 /* Start of tfc_tpg_np_base_cit */
 539
 540 CONFIGFS_EATTR_OPS(target_fabric_np_base, se_tpg_np, tpg_np_group);
 541
 542 static void target_fabric_np_base_release(struct config_item *item)
 543 {
 544         struct se_tpg_np *se_tpg_np = container_of(to_config_group(item),
 545                                 struct se_tpg_np, tpg_np_group);
 546         struct se_portal_group *se_tpg = se_tpg_np->tpg_np_parent;
 547         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 548
 549         tf->tf_ops.fabric_drop_np(se_tpg_np);
 550 }
 551
 552 static struct configfs_item_operations target_fabric_np_base_item_ops = {
 553         .release                = target_fabric_np_base_release,
 554         .show_attribute         = target_fabric_np_base_attr_show,
 555         .store_attribute        = target_fabric_np_base_attr_store,
 556 };
 557
 558 TF_CIT_SETUP(tpg_np_base, &target_fabric_np_base_item_ops, NULL, NULL);
 559
 560 /* End of tfc_tpg_np_base_cit */
 561
 562 /* Start of tfc_tpg_np_cit */
 563
 564 static struct config_group *target_fabric_make_np(
 565         struct config_group *group,
 566         const char *name)
 567 {
 568         struct se_portal_group *se_tpg = container_of(group,
 569                                 struct se_portal_group, tpg_np_group);
 570         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 571         struct se_tpg_np *se_tpg_np;
 572
 573         if (!tf->tf_ops.fabric_make_np) {
 574                 pr_err("tf->tf_ops.fabric_make_np is NULL\n");
 575                 return ERR_PTR(-ENOSYS);
 576         }
 577
 578         se_tpg_np = tf->tf_ops.fabric_make_np(se_tpg, group, name);
 579         if (!se_tpg_np || IS_ERR(se_tpg_np))
 580                 return ERR_PTR(-EINVAL);
 581
 582         se_tpg_np->tpg_np_parent = se_tpg;
 583         config_group_init_type_name(&se_tpg_np->tpg_np_group, name,
 584                         &TF_CIT_TMPL(tf)->tfc_tpg_np_base_cit);
 585
 586         return &se_tpg_np->tpg_np_group;
 587 }
 588
 589 static void target_fabric_drop_np(
 590         struct config_group *group,
 591         struct config_item *item)
 592 {
 593         /*
 594          * struct se_tpg_np is released via target_fabric_np_base_release()
 595          */
 596         config_item_put(item);
 597 }
 598
 599 static struct configfs_group_operations target_fabric_np_group_ops = {
 600         .make_group     = &target_fabric_make_np,
 601         .drop_item      = &target_fabric_drop_np,
 602 };
 603
 604 TF_CIT_SETUP(tpg_np, NULL, &target_fabric_np_group_ops, NULL);
 605
 606 /* End of tfc_tpg_np_cit */
 607
 608 /* Start of tfc_tpg_port_cit */
 609
 610 CONFIGFS_EATTR_STRUCT(target_fabric_port, se_lun);
 611 #define TCM_PORT_ATTR(_name, _mode)                                     \
 612 static struct target_fabric_port_attribute target_fabric_port_##_name = \
 613         __CONFIGFS_EATTR(_name, _mode,                                  \
 614         target_fabric_port_show_attr_##_name,                           \
 615         target_fabric_port_store_attr_##_name);
 616
 617 #define TCM_PORT_ATTOR_RO(_name)                                        \
 618         __CONFIGFS_EATTR_RO(_name,                                      \
 619         target_fabric_port_show_attr_##_name);
 620
 621 /*
 622  * alua_tg_pt_gp
 623  */
 624 static ssize_t target_fabric_port_show_attr_alua_tg_pt_gp(
 625         struct se_lun *lun,
 626         char *page)
 627 {
 628         if (!lun || !lun->lun_sep)
 629                 return -ENODEV;
 630
 631         return core_alua_show_tg_pt_gp_info(lun->lun_sep, page);
 632 }
 633
 634 static ssize_t target_fabric_port_store_attr_alua_tg_pt_gp(
 635         struct se_lun *lun,
 636         const char *page,
 637         size_t count)
 638 {
 639         if (!lun || !lun->lun_sep)
 640                 return -ENODEV;
 641
 642         return core_alua_store_tg_pt_gp_info(lun->lun_sep, page, count);
 643 }
 644
 645 TCM_PORT_ATTR(alua_tg_pt_gp, S_IRUGO | S_IWUSR);
 646
 647 /*
 648  * alua_tg_pt_offline
 649  */
 650 static ssize_t target_fabric_port_show_attr_alua_tg_pt_offline(
 651         struct se_lun *lun,
 652         char *page)
 653 {
 654         if (!lun || !lun->lun_sep)
 655                 return -ENODEV;
 656
 657         return core_alua_show_offline_bit(lun, page);
 658 }
 659
 660 static ssize_t target_fabric_port_store_attr_alua_tg_pt_offline(
 661         struct se_lun *lun,
 662         const char *page,
 663         size_t count)
 664 {
 665         if (!lun || !lun->lun_sep)
 666                 return -ENODEV;
 667
 668         return core_alua_store_offline_bit(lun, page, count);
 669 }
 670
 671 TCM_PORT_ATTR(alua_tg_pt_offline, S_IRUGO | S_IWUSR);
 672
 673 /*
 674  * alua_tg_pt_status
 675  */
 676 static ssize_t target_fabric_port_show_attr_alua_tg_pt_status(
 677         struct se_lun *lun,
 678         char *page)
 679 {
 680         if (!lun || !lun->lun_sep)
 681                 return -ENODEV;
 682
 683         return core_alua_show_secondary_status(lun, page);
 684 }
 685
 686 static ssize_t target_fabric_port_store_attr_alua_tg_pt_status(
 687         struct se_lun *lun,
 688         const char *page,
 689         size_t count)
 690 {
 691         if (!lun || !lun->lun_sep)
 692                 return -ENODEV;
 693
 694         return core_alua_store_secondary_status(lun, page, count);
 695 }
 696
 697 TCM_PORT_ATTR(alua_tg_pt_status, S_IRUGO | S_IWUSR);
 698
 699 /*
 700  * alua_tg_pt_write_md
 701  */
 702 static ssize_t target_fabric_port_show_attr_alua_tg_pt_write_md(
 703         struct se_lun *lun,
 704         char *page)
 705 {
 706         if (!lun || !lun->lun_sep)
 707                 return -ENODEV;
 708
 709         return core_alua_show_secondary_write_metadata(lun, page);
 710 }
 711
 712 static ssize_t target_fabric_port_store_attr_alua_tg_pt_write_md(
 713         struct se_lun *lun,
 714         const char *page,
 715         size_t count)
 716 {
 717         if (!lun || !lun->lun_sep)
 718                 return -ENODEV;
 719
 720         return core_alua_store_secondary_write_metadata(lun, page, count);
 721 }
 722
 723 TCM_PORT_ATTR(alua_tg_pt_write_md, S_IRUGO | S_IWUSR);
 724
 725
 726 static struct configfs_attribute *target_fabric_port_attrs[] = {
 727         &target_fabric_port_alua_tg_pt_gp.attr,
 728         &target_fabric_port_alua_tg_pt_offline.attr,
 729         &target_fabric_port_alua_tg_pt_status.attr,
 730         &target_fabric_port_alua_tg_pt_write_md.attr,
 731         NULL,
 732 };
 733
 734 CONFIGFS_EATTR_OPS(target_fabric_port, se_lun, lun_group);
 735
 736 static int target_fabric_port_link(
 737         struct config_item *lun_ci,
 738         struct config_item *se_dev_ci)
 739 {
 740         struct config_item *tpg_ci;
 741         struct se_device *dev;
 742         struct se_lun *lun = container_of(to_config_group(lun_ci),
 743                                 struct se_lun, lun_group);
 744         struct se_lun *lun_p;
 745         struct se_portal_group *se_tpg;
 746         struct se_subsystem_dev *se_dev = container_of(
 747                                 to_config_group(se_dev_ci), struct se_subsystem_dev,
 748                                 se_dev_group);
 749         struct target_fabric_configfs *tf;
 750         int ret;
 751
 752         tpg_ci = &lun_ci->ci_parent->ci_group->cg_item;
 753         se_tpg = container_of(to_config_group(tpg_ci),
 754                                 struct se_portal_group, tpg_group);
 755         tf = se_tpg->se_tpg_wwn->wwn_tf;
 756
 757         if (lun->lun_se_dev !=  NULL) {
 758                 pr_err("Port Symlink already exists\n");
 759                 return -EEXIST;
 760         }
 761
 762         dev = se_dev->se_dev_ptr;
 763         if (!dev) {
 764                 pr_err("Unable to locate struct se_device pointer from"
 765                         " %s\n", config_item_name(se_dev_ci));
 766                 ret = -ENODEV;
 767                 goto out;
 768         }
 769
 770         lun_p = core_dev_add_lun(se_tpg, dev->se_hba, dev,
 771                                 lun->unpacked_lun);
 772         if (IS_ERR(lun_p) || !lun_p) {
 773                 pr_err("core_dev_add_lun() failed\n");
 774                 ret = -EINVAL;
 775                 goto out;
 776         }
 777
 778         if (tf->tf_ops.fabric_post_link) {
 779                 /*
 780                  * Call the optional fabric_post_link() to allow a
 781                  * fabric module to setup any additional state once
 782                  * core_dev_add_lun() has been called..
 783                  */
 784                 tf->tf_ops.fabric_post_link(se_tpg, lun);
 785         }
 786
 787         return 0;
 788 out:
 789         return ret;
 790 }
 791
 792 static int target_fabric_port_unlink(
 793         struct config_item *lun_ci,
 794         struct config_item *se_dev_ci)
 795 {
 796         struct se_lun *lun = container_of(to_config_group(lun_ci),
 797                                 struct se_lun, lun_group);
 798         struct se_portal_group *se_tpg = lun->lun_sep->sep_tpg;
 799         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 800
 801         if (tf->tf_ops.fabric_pre_unlink) {
 802                 /*
 803                  * Call the optional fabric_pre_unlink() to allow a
 804                  * fabric module to release any additional stat before
 805                  * core_dev_del_lun() is called.
 806                 */
 807                 tf->tf_ops.fabric_pre_unlink(se_tpg, lun);
 808         }
 809
 810         core_dev_del_lun(se_tpg, lun->unpacked_lun);
 811         return 0;
 812 }
 813
 814 static struct configfs_item_operations target_fabric_port_item_ops = {
 815         .show_attribute         = target_fabric_port_attr_show,
 816         .store_attribute        = target_fabric_port_attr_store,
 817         .allow_link             = target_fabric_port_link,
 818         .drop_link              = target_fabric_port_unlink,
 819 };
 820
 821 TF_CIT_SETUP(tpg_port, &target_fabric_port_item_ops, NULL, target_fabric_port_attrs);
 822
 823 /* End of tfc_tpg_port_cit */
 824
 825 /* Start of tfc_tpg_port_stat_cit */
 826
 827 static struct config_group *target_core_port_stat_mkdir(
 828         struct config_group *group,
 829         const char *name)
 830 {
 831         return ERR_PTR(-ENOSYS);
 832 }
 833
 834 static void target_core_port_stat_rmdir(
 835         struct config_group *group,
 836         struct config_item *item)
 837 {
 838         return;
 839 }
 840
 841 static struct configfs_group_operations target_fabric_port_stat_group_ops = {
 842         .make_group             = target_core_port_stat_mkdir,
 843         .drop_item              = target_core_port_stat_rmdir,
 844 };
 845
 846 TF_CIT_SETUP(tpg_port_stat, NULL, &target_fabric_port_stat_group_ops, NULL);
 847
 848 /* End of tfc_tpg_port_stat_cit */
 849
 850 /* Start of tfc_tpg_lun_cit */
 851
 852 static struct config_group *target_fabric_make_lun(
 853         struct config_group *group,
 854         const char *name)
 855 {
 856         struct se_lun *lun;
 857         struct se_portal_group *se_tpg = container_of(group,
 858                         struct se_portal_group, tpg_lun_group);
 859         struct target_fabric_configfs *tf = se_tpg->se_tpg_wwn->wwn_tf;
 860         struct config_group *lun_cg = NULL, *port_stat_grp = NULL;
 861         unsigned long unpacked_lun;
 862         int errno;
 863
 864         if (strstr(name, "lun_") != name) {
 865                 pr_err("Unable to locate \'_\" in"
 866                                 " \"lun_$LUN_NUMBER\"\n");
 867                 return ERR_PTR(-EINVAL);
 868         }
 869         if (strict_strtoul(name + 4, 0, &unpacked_lun) || unpacked_lun > UINT_MAX)
 870                 return ERR_PTR(-EINVAL);
 871
 872         lun = core_get_lun_from_tpg(se_tpg, unpacked_lun);
 873         if (!lun)
 874                 return ERR_PTR(-EINVAL);
 875
 876         lun_cg = &lun->lun_group;
 877         lun_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
 878                                 GFP_KERNEL);
 879         if (!lun_cg->default_groups) {
 880                 pr_err("Unable to allocate lun_cg->default_groups\n");
 881                 return ERR_PTR(-ENOMEM);
 882         }
 883
 884         config_group_init_type_name(&lun->lun_group, name,
 885                         &TF_CIT_TMPL(tf)->tfc_tpg_port_cit);
 886         config_group_init_type_name(&lun->port_stat_grps.stat_group,
 887                         "statistics", &TF_CIT_TMPL(tf)->tfc_tpg_port_stat_cit);
 888         lun_cg->default_groups[0] = &lun->port_stat_grps.stat_group;
 889         lun_cg->default_groups[1] = NULL;
 890
 891         port_stat_grp = &lun->port_stat_grps.stat_group;
 892         port_stat_grp->default_groups =  kzalloc(sizeof(struct config_group) * 3,
 893                                 GFP_KERNEL);
 894         if (!port_stat_grp->default_groups) {
 895                 pr_err("Unable to allocate port_stat_grp->default_groups\n");
 896                 errno = -ENOMEM;
 897                 goto out;
 898         }
 899         target_stat_setup_port_default_groups(lun);
 900
 901         return &lun->lun_group;
 902 out:
 903         if (lun_cg)
 904                 kfree(lun_cg->default_groups);
 905         return ERR_PTR(errno);
 906 }
 907
 908 static void target_fabric_drop_lun(
 909         struct config_group *group,
 910         struct config_item *item)
 911 {
 912         struct se_lun *lun = container_of(to_config_group(item),
 913                                 struct se_lun, lun_group);
 914         struct config_item *df_item;
 915         struct config_group *lun_cg, *port_stat_grp;
 916         int i;
 917
 918         port_stat_grp = &lun->port_stat_grps.stat_group;
 919         for (i = 0; port_stat_grp->default_groups[i]; i++) {
 920                 df_item = &port_stat_grp->default_groups[i]->cg_item;
 921                 port_stat_grp->default_groups[i] = NULL;
 922                 config_item_put(df_item);
 923         }
 924         kfree(port_stat_grp->default_groups);
 925
 926         lun_cg = &lun->lun_group;
 927         for (i = 0; lun_cg->default_groups[i]; i++) {
 928                 df_item = &lun_cg->default_groups[i]->cg_item;
 929                 lun_cg->default_groups[i] = NULL;
 930                 config_item_put(df_item);
 931         }
 932         kfree(lun_cg->default_groups);
 933
 934         config_item_put(item);
 935 }
 936
 937 static struct configfs_group_operations target_fabric_lun_group_ops = {
 938         .make_group     = &target_fabric_make_lun,
 939         .drop_item      = &target_fabric_drop_lun,
 940 };
 941
 942 TF_CIT_SETUP(tpg_lun, NULL, &target_fabric_lun_group_ops, NULL);
 943
 944 /* End of tfc_tpg_lun_cit */
 945
 946 /* Start of tfc_tpg_attrib_cit */
 947
 948 CONFIGFS_EATTR_OPS(target_fabric_tpg_attrib, se_portal_group, tpg_attrib_group);
 949
 950 static struct configfs_item_operations target_fabric_tpg_attrib_item_ops = {
 951         .show_attribute         = target_fabric_tpg_attrib_attr_show,
 952         .store_attribute        = target_fabric_tpg_attrib_attr_store,
 953 };
 954
 955 TF_CIT_SETUP(tpg_attrib, &target_fabric_tpg_attrib_item_ops, NULL, NULL);
 956
 957 /* End of tfc_tpg_attrib_cit */
 958
 959 /* Start of tfc_tpg_param_cit */
 960
 961 CONFIGFS_EATTR_OPS(target_fabric_tpg_param, se_portal_group, tpg_param_group);
 962
 963 static struct configfs_item_operations target_fabric_tpg_param_item_ops = {
 964         .show_attribute         = target_fabric_tpg_param_attr_show,
 965         .store_attribute        = target_fabric_tpg_param_attr_store,
 966 };
 967
 968 TF_CIT_SETUP(tpg_param, &target_fabric_tpg_param_item_ops, NULL, NULL);
 969
 970 /* End of tfc_tpg_param_cit */
 971
 972 /* Start of tfc_tpg_base_cit */
 973 /*
 974  * For use with TF_TPG_ATTR() and TF_TPG_ATTR_RO()
 975  */
 976 CONFIGFS_EATTR_OPS(target_fabric_tpg, se_portal_group, tpg_group);
 977
 978 static void target_fabric_tpg_release(struct config_item *item)
 979 {
 980         struct se_portal_group *se_tpg = container_of(to_config_group(item),
 981                         struct se_portal_group, tpg_group);
 982         struct se_wwn *wwn = se_tpg->se_tpg_wwn;
 983         struct target_fabric_configfs *tf = wwn->wwn_tf;
 984
 985         tf->tf_ops.fabric_drop_tpg(se_tpg);
 986 }
 987
 988 static struct configfs_item_operations target_fabric_tpg_base_item_ops = {
 989         .release                = target_fabric_tpg_release,
 990         .show_attribute         = target_fabric_tpg_attr_show,
 991         .store_attribute        = target_fabric_tpg_attr_store,
 992 };
 993
 994 TF_CIT_SETUP(tpg_base, &target_fabric_tpg_base_item_ops, NULL, NULL);
 995
 996 /* End of tfc_tpg_base_cit */
 997
 998 /* Start of tfc_tpg_cit */
 999
1000 static struct config_group *target_fabric_make_tpg(
1001         struct config_group *group,
1002         const char *name)
1003 {
1004         struct se_wwn *wwn = container_of(group, struct se_wwn, wwn_group);
1005         struct target_fabric_configfs *tf = wwn->wwn_tf;
1006         struct se_portal_group *se_tpg;
1007
1008         if (!tf->tf_ops.fabric_make_tpg) {
1009                 pr_err("tf->tf_ops.fabric_make_tpg is NULL\n");
1010                 return ERR_PTR(-ENOSYS);
1011         }
1012
1013         se_tpg = tf->tf_ops.fabric_make_tpg(wwn, group, name);
1014         if (!se_tpg || IS_ERR(se_tpg))
1015                 return ERR_PTR(-EINVAL);
1016         /*
1017          * Setup default groups from pre-allocated se_tpg->tpg_default_groups
1018          */
1019         se_tpg->tpg_group.default_groups = se_tpg->tpg_default_groups;
1020         se_tpg->tpg_group.default_groups[0] = &se_tpg->tpg_lun_group;
1021         se_tpg->tpg_group.default_groups[1] = &se_tpg->tpg_np_group;
1022         se_tpg->tpg_group.default_groups[2] = &se_tpg->tpg_acl_group;
1023         se_tpg->tpg_group.default_groups[3] = &se_tpg->tpg_attrib_group;
1024         se_tpg->tpg_group.default_groups[4] = &se_tpg->tpg_param_group;
1025         se_tpg->tpg_group.default_groups[5] = NULL;
1026
1027         config_group_init_type_name(&se_tpg->tpg_group, name,
1028                         &TF_CIT_TMPL(tf)->tfc_tpg_base_cit);
1029         config_group_init_type_name(&se_tpg->tpg_lun_group, "lun",
1030                         &TF_CIT_TMPL(tf)->tfc_tpg_lun_cit);
1031         config_group_init_type_name(&se_tpg->tpg_np_group, "np",
1032                         &TF_CIT_TMPL(tf)->tfc_tpg_np_cit);
1033         config_group_init_type_name(&se_tpg->tpg_acl_group, "acls",
1034                         &TF_CIT_TMPL(tf)->tfc_tpg_nacl_cit);
1035         config_group_init_type_name(&se_tpg->tpg_attrib_group, "attrib",
1036                         &TF_CIT_TMPL(tf)->tfc_tpg_attrib_cit);
1037         config_group_init_type_name(&se_tpg->tpg_param_group, "param",
1038                         &TF_CIT_TMPL(tf)->tfc_tpg_param_cit);
1039
1040         return &se_tpg->tpg_group;
1041 }
1042
1043 static void target_fabric_drop_tpg(
1044         struct config_group *group,
1045         struct config_item *item)
1046 {
1047         struct se_portal_group *se_tpg = container_of(to_config_group(item),
1048                                 struct se_portal_group, tpg_group);
1049         struct config_group *tpg_cg = &se_tpg->tpg_group;
1050         struct config_item *df_item;
1051         int i;
1052         /*
1053          * Release default groups, but do not release tpg_cg->default_groups
1054          * memory as it is statically allocated at se_tpg->tpg_default_groups.
1055          */
1056         for (i = 0; tpg_cg->default_groups[i]; i++) {
1057                 df_item = &tpg_cg->default_groups[i]->cg_item;
1058                 tpg_cg->default_groups[i] = NULL;
1059                 config_item_put(df_item);
1060         }
1061
1062         config_item_put(item);
1063 }
1064
1065 static void target_fabric_release_wwn(struct config_item *item)
1066 {
1067         struct se_wwn *wwn = container_of(to_config_group(item),
1068                                 struct se_wwn, wwn_group);
1069         struct target_fabric_configfs *tf = wwn->wwn_tf;
1070
1071         tf->tf_ops.fabric_drop_wwn(wwn);
1072 }
1073
1074 static struct configfs_item_operations target_fabric_tpg_item_ops = {
1075         .release        = target_fabric_release_wwn,
1076 };
1077
1078 static struct configfs_group_operations target_fabric_tpg_group_ops = {
1079         .make_group     = target_fabric_make_tpg,
1080         .drop_item      = target_fabric_drop_tpg,
1081 };
1082
1083 TF_CIT_SETUP(tpg, &target_fabric_tpg_item_ops, &target_fabric_tpg_group_ops,
1084                 NULL);
1085
1086 /* End of tfc_tpg_cit */
1087
1088 /* Start of tfc_wwn_fabric_stats_cit */
1089 /*
1090  * This is used as a placeholder for struct se_wwn->fabric_stat_group
1091  * to allow fabrics access to ->fabric_stat_group->default_groups[]
1092  */
1093 TF_CIT_SETUP(wwn_fabric_stats, NULL, NULL, NULL);
1094
1095 /* End of tfc_wwn_fabric_stats_cit */
1096
1097 /* Start of tfc_wwn_cit */
1098
1099 static struct config_group *target_fabric_make_wwn(
1100         struct config_group *group,
1101         const char *name)
1102 {
1103         struct target_fabric_configfs *tf = container_of(group,
1104                                 struct target_fabric_configfs, tf_group);
1105         struct se_wwn *wwn;
1106
1107         if (!tf->tf_ops.fabric_make_wwn) {
1108                 pr_err("tf->tf_ops.fabric_make_wwn is NULL\n");
1109                 return ERR_PTR(-ENOSYS);
1110         }
1111
1112         wwn = tf->tf_ops.fabric_make_wwn(tf, group, name);
1113         if (!wwn || IS_ERR(wwn))
1114                 return ERR_PTR(-EINVAL);
1115
1116         wwn->wwn_tf = tf;
1117         /*
1118          * Setup default groups from pre-allocated wwn->wwn_default_groups
1119          */
1120         wwn->wwn_group.default_groups = wwn->wwn_default_groups;
1121         wwn->wwn_group.default_groups[0] = &wwn->fabric_stat_group;
1122         wwn->wwn_group.default_groups[1] = NULL;
1123
1124         config_group_init_type_name(&wwn->wwn_group, name,
1125                         &TF_CIT_TMPL(tf)->tfc_tpg_cit);
1126         config_group_init_type_name(&wwn->fabric_stat_group, "fabric_statistics",
1127                         &TF_CIT_TMPL(tf)->tfc_wwn_fabric_stats_cit);
1128
1129         return &wwn->wwn_group;
1130 }
1131
1132 static void target_fabric_drop_wwn(
1133         struct config_group *group,
1134         struct config_item *item)
1135 {
1136         struct se_wwn *wwn = container_of(to_config_group(item),
1137                                 struct se_wwn, wwn_group);
1138         struct config_item *df_item;
1139         struct config_group *cg = &wwn->wwn_group;
1140         int i;
1141
1142         for (i = 0; cg->default_groups[i]; i++) {
1143                 df_item = &cg->default_groups[i]->cg_item;
1144                 cg->default_groups[i] = NULL;
1145                 config_item_put(df_item);
1146         }
1147
1148         config_item_put(item);
1149 }
1150
1151 static struct configfs_group_operations target_fabric_wwn_group_ops = {
1152         .make_group     = target_fabric_make_wwn,
1153         .drop_item      = target_fabric_drop_wwn,
1154 };
1155 /*
1156  * For use with TF_WWN_ATTR() and TF_WWN_ATTR_RO()
1157  */
1158 CONFIGFS_EATTR_OPS(target_fabric_wwn, target_fabric_configfs, tf_group);
1159
1160 static struct configfs_item_operations target_fabric_wwn_item_ops = {
1161         .show_attribute         = target_fabric_wwn_attr_show,
1162         .store_attribute        = target_fabric_wwn_attr_store,
1163 };
1164
1165 TF_CIT_SETUP(wwn, &target_fabric_wwn_item_ops, &target_fabric_wwn_group_ops, NULL);
1166
1167 /* End of tfc_wwn_cit */
1168
1169 /* Start of tfc_discovery_cit */
1170
1171 CONFIGFS_EATTR_OPS(target_fabric_discovery, target_fabric_configfs,
1172                 tf_disc_group);
1173
1174 static struct configfs_item_operations target_fabric_discovery_item_ops = {
1175         .show_attribute         = target_fabric_discovery_attr_show,
1176         .store_attribute        = target_fabric_discovery_attr_store,
1177 };
1178
1179 TF_CIT_SETUP(discovery, &target_fabric_discovery_item_ops, NULL, NULL);
1180
1181 /* End of tfc_discovery_cit */
1182
1183 int target_fabric_setup_cits(struct target_fabric_configfs *tf)
1184 {
1185         target_fabric_setup_discovery_cit(tf);
1186         target_fabric_setup_wwn_cit(tf);
1187         target_fabric_setup_wwn_fabric_stats_cit(tf);
1188         target_fabric_setup_tpg_cit(tf);
1189         target_fabric_setup_tpg_base_cit(tf);
1190         target_fabric_setup_tpg_port_cit(tf);
1191         target_fabric_setup_tpg_port_stat_cit(tf);
1192         target_fabric_setup_tpg_lun_cit(tf);
1193         target_fabric_setup_tpg_np_cit(tf);
1194         target_fabric_setup_tpg_np_base_cit(tf);
1195         target_fabric_setup_tpg_attrib_cit(tf);
1196         target_fabric_setup_tpg_param_cit(tf);
1197         target_fabric_setup_tpg_nacl_cit(tf);
1198         target_fabric_setup_tpg_nacl_base_cit(tf);
1199         target_fabric_setup_tpg_nacl_attrib_cit(tf);
1200         target_fabric_setup_tpg_nacl_auth_cit(tf);
1201         target_fabric_setup_tpg_nacl_param_cit(tf);
1202         target_fabric_setup_tpg_nacl_stat_cit(tf);
1203         target_fabric_setup_tpg_mappedlun_cit(tf);
1204         target_fabric_setup_tpg_mappedlun_stat_cit(tf);
1205
1206         return 0;
1207 }