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