drivers/target/iscsi/iscsi_target_tpg.c

   1 /*******************************************************************************
   2  * This file contains iSCSI Target Portal Group related functions.
   3  *
   4  * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
   5  *
   6  * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
   7  *
   8  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   9  *
  10  * This program is free software; you can redistribute it and/or modify
  11  * it under the terms of the GNU General Public License as published by
  12  * the Free Software Foundation; either version 2 of the License, or
  13  * (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  ******************************************************************************/
  20
  21 #include <target/target_core_base.h>
  22 #include <target/target_core_fabric.h>
  23 #include <target/target_core_configfs.h>
  24
  25 #include "iscsi_target_core.h"
  26 #include "iscsi_target_erl0.h"
  27 #include "iscsi_target_login.h"
  28 #include "iscsi_target_nodeattrib.h"
  29 #include "iscsi_target_tpg.h"
  30 #include "iscsi_target_util.h"
  31 #include "iscsi_target.h"
  32 #include "iscsi_target_parameters.h"
  33
  34 #include <target/iscsi/iscsi_transport.h>
  35
  36 struct iscsi_portal_group *iscsit_alloc_portal_group(struct iscsi_tiqn *tiqn, u16 tpgt)
  37 {
  38         struct iscsi_portal_group *tpg;
  39
  40         tpg = kzalloc(sizeof(struct iscsi_portal_group), GFP_KERNEL);
  41         if (!tpg) {
  42                 pr_err("Unable to allocate struct iscsi_portal_group\n");
  43                 return NULL;
  44         }
  45
  46         tpg->tpgt = tpgt;
  47         tpg->tpg_state = TPG_STATE_FREE;
  48         tpg->tpg_tiqn = tiqn;
  49         INIT_LIST_HEAD(&tpg->tpg_gnp_list);
  50         INIT_LIST_HEAD(&tpg->tpg_list);
  51         mutex_init(&tpg->tpg_access_lock);
  52         mutex_init(&tpg->np_login_lock);
  53         spin_lock_init(&tpg->tpg_state_lock);
  54         spin_lock_init(&tpg->tpg_np_lock);
  55
  56         return tpg;
  57 }
  58
  59 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *);
  60
  61 int iscsit_load_discovery_tpg(void)
  62 {
  63         struct iscsi_param *param;
  64         struct iscsi_portal_group *tpg;
  65         int ret;
  66
  67         tpg = iscsit_alloc_portal_group(NULL, 1);
  68         if (!tpg) {
  69                 pr_err("Unable to allocate struct iscsi_portal_group\n");
  70                 return -1;
  71         }
  72
  73         ret = core_tpg_register(
  74                         &lio_target_fabric_configfs->tf_ops,
  75                         NULL, &tpg->tpg_se_tpg, tpg,
  76                         TRANSPORT_TPG_TYPE_DISCOVERY);
  77         if (ret < 0) {
  78                 kfree(tpg);
  79                 return -1;
  80         }
  81
  82         tpg->sid = 1; /* First Assigned LIO Session ID */
  83         iscsit_set_default_tpg_attribs(tpg);
  84
  85         if (iscsi_create_default_params(&tpg->param_list) < 0)
  86                 goto out;
  87         /*
  88          * By default we disable authentication for discovery sessions,
  89          * this can be changed with:
  90          *
  91          * /sys/kernel/config/target/iscsi/discovery_auth/enforce_discovery_auth
  92          */
  93         param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
  94         if (!param)
  95                 goto out;
  96
  97         if (iscsi_update_param_value(param, "CHAP,None") < 0)
  98                 goto out;
  99
 100         tpg->tpg_attrib.authentication = 0;
 101
 102         spin_lock(&tpg->tpg_state_lock);
 103         tpg->tpg_state  = TPG_STATE_ACTIVE;
 104         spin_unlock(&tpg->tpg_state_lock);
 105
 106         iscsit_global->discovery_tpg = tpg;
 107         pr_debug("CORE[0] - Allocated Discovery TPG\n");
 108
 109         return 0;
 110 out:
 111         if (tpg->sid == 1)
 112                 core_tpg_deregister(&tpg->tpg_se_tpg);
 113         kfree(tpg);
 114         return -1;
 115 }
 116
 117 void iscsit_release_discovery_tpg(void)
 118 {
 119         struct iscsi_portal_group *tpg = iscsit_global->discovery_tpg;
 120
 121         if (!tpg)
 122                 return;
 123
 124         core_tpg_deregister(&tpg->tpg_se_tpg);
 125
 126         kfree(tpg);
 127         iscsit_global->discovery_tpg = NULL;
 128 }
 129
 130 struct iscsi_portal_group *iscsit_get_tpg_from_np(
 131         struct iscsi_tiqn *tiqn,
 132         struct iscsi_np *np)
 133 {
 134         struct iscsi_portal_group *tpg = NULL;
 135         struct iscsi_tpg_np *tpg_np;
 136
 137         spin_lock(&tiqn->tiqn_tpg_lock);
 138         list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
 139
 140                 spin_lock(&tpg->tpg_state_lock);
 141                 if (tpg->tpg_state == TPG_STATE_FREE) {
 142                         spin_unlock(&tpg->tpg_state_lock);
 143                         continue;
 144                 }
 145                 spin_unlock(&tpg->tpg_state_lock);
 146
 147                 spin_lock(&tpg->tpg_np_lock);
 148                 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
 149                         if (tpg_np->tpg_np == np) {
 150                                 spin_unlock(&tpg->tpg_np_lock);
 151                                 spin_unlock(&tiqn->tiqn_tpg_lock);
 152                                 return tpg;
 153                         }
 154                 }
 155                 spin_unlock(&tpg->tpg_np_lock);
 156         }
 157         spin_unlock(&tiqn->tiqn_tpg_lock);
 158
 159         return NULL;
 160 }
 161
 162 int iscsit_get_tpg(
 163         struct iscsi_portal_group *tpg)
 164 {
 165         int ret;
 166
 167         ret = mutex_lock_interruptible(&tpg->tpg_access_lock);
 168         return ((ret != 0) || signal_pending(current)) ? -1 : 0;
 169 }
 170
 171 void iscsit_put_tpg(struct iscsi_portal_group *tpg)
 172 {
 173         mutex_unlock(&tpg->tpg_access_lock);
 174 }
 175
 176 static void iscsit_clear_tpg_np_login_thread(
 177         struct iscsi_tpg_np *tpg_np,
 178         struct iscsi_portal_group *tpg)
 179 {
 180         if (!tpg_np->tpg_np) {
 181                 pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
 182                 return;
 183         }
 184
 185         iscsit_reset_np_thread(tpg_np->tpg_np, tpg_np, tpg);
 186 }
 187
 188 void iscsit_clear_tpg_np_login_threads(
 189         struct iscsi_portal_group *tpg)
 190 {
 191         struct iscsi_tpg_np *tpg_np;
 192
 193         spin_lock(&tpg->tpg_np_lock);
 194         list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
 195                 if (!tpg_np->tpg_np) {
 196                         pr_err("struct iscsi_tpg_np->tpg_np is NULL!\n");
 197                         continue;
 198                 }
 199                 spin_unlock(&tpg->tpg_np_lock);
 200                 iscsit_clear_tpg_np_login_thread(tpg_np, tpg);
 201                 spin_lock(&tpg->tpg_np_lock);
 202         }
 203         spin_unlock(&tpg->tpg_np_lock);
 204 }
 205
 206 void iscsit_tpg_dump_params(struct iscsi_portal_group *tpg)
 207 {
 208         iscsi_print_params(tpg->param_list);
 209 }
 210
 211 static void iscsit_set_default_tpg_attribs(struct iscsi_portal_group *tpg)
 212 {
 213         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 214
 215         a->authentication = TA_AUTHENTICATION;
 216         a->login_timeout = TA_LOGIN_TIMEOUT;
 217         a->netif_timeout = TA_NETIF_TIMEOUT;
 218         a->default_cmdsn_depth = TA_DEFAULT_CMDSN_DEPTH;
 219         a->generate_node_acls = TA_GENERATE_NODE_ACLS;
 220         a->cache_dynamic_acls = TA_CACHE_DYNAMIC_ACLS;
 221         a->demo_mode_write_protect = TA_DEMO_MODE_WRITE_PROTECT;
 222         a->prod_mode_write_protect = TA_PROD_MODE_WRITE_PROTECT;
 223 }
 224
 225 int iscsit_tpg_add_portal_group(struct iscsi_tiqn *tiqn, struct iscsi_portal_group *tpg)
 226 {
 227         if (tpg->tpg_state != TPG_STATE_FREE) {
 228                 pr_err("Unable to add iSCSI Target Portal Group: %d"
 229                         " while not in TPG_STATE_FREE state.\n", tpg->tpgt);
 230                 return -EEXIST;
 231         }
 232         iscsit_set_default_tpg_attribs(tpg);
 233
 234         if (iscsi_create_default_params(&tpg->param_list) < 0)
 235                 goto err_out;
 236
 237         ISCSI_TPG_ATTRIB(tpg)->tpg = tpg;
 238
 239         spin_lock(&tpg->tpg_state_lock);
 240         tpg->tpg_state  = TPG_STATE_INACTIVE;
 241         spin_unlock(&tpg->tpg_state_lock);
 242
 243         spin_lock(&tiqn->tiqn_tpg_lock);
 244         list_add_tail(&tpg->tpg_list, &tiqn->tiqn_tpg_list);
 245         tiqn->tiqn_ntpgs++;
 246         pr_debug("CORE[%s]_TPG[%hu] - Added iSCSI Target Portal Group\n",
 247                         tiqn->tiqn, tpg->tpgt);
 248         spin_unlock(&tiqn->tiqn_tpg_lock);
 249
 250         return 0;
 251 err_out:
 252         if (tpg->param_list) {
 253                 iscsi_release_param_list(tpg->param_list);
 254                 tpg->param_list = NULL;
 255         }
 256         kfree(tpg);
 257         return -ENOMEM;
 258 }
 259
 260 int iscsit_tpg_del_portal_group(
 261         struct iscsi_tiqn *tiqn,
 262         struct iscsi_portal_group *tpg,
 263         int force)
 264 {
 265         u8 old_state = tpg->tpg_state;
 266
 267         spin_lock(&tpg->tpg_state_lock);
 268         tpg->tpg_state = TPG_STATE_INACTIVE;
 269         spin_unlock(&tpg->tpg_state_lock);
 270
 271         if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
 272                 pr_err("Unable to delete iSCSI Target Portal Group:"
 273                         " %hu while active sessions exist, and force=0\n",
 274                         tpg->tpgt);
 275                 tpg->tpg_state = old_state;
 276                 return -EPERM;
 277         }
 278
 279         core_tpg_clear_object_luns(&tpg->tpg_se_tpg);
 280
 281         if (tpg->param_list) {
 282                 iscsi_release_param_list(tpg->param_list);
 283                 tpg->param_list = NULL;
 284         }
 285
 286         core_tpg_deregister(&tpg->tpg_se_tpg);
 287
 288         spin_lock(&tpg->tpg_state_lock);
 289         tpg->tpg_state = TPG_STATE_FREE;
 290         spin_unlock(&tpg->tpg_state_lock);
 291
 292         spin_lock(&tiqn->tiqn_tpg_lock);
 293         tiqn->tiqn_ntpgs--;
 294         list_del(&tpg->tpg_list);
 295         spin_unlock(&tiqn->tiqn_tpg_lock);
 296
 297         pr_debug("CORE[%s]_TPG[%hu] - Deleted iSCSI Target Portal Group\n",
 298                         tiqn->tiqn, tpg->tpgt);
 299
 300         kfree(tpg);
 301         return 0;
 302 }
 303
 304 int iscsit_tpg_enable_portal_group(struct iscsi_portal_group *tpg)
 305 {
 306         struct iscsi_param *param;
 307         struct iscsi_tiqn *tiqn = tpg->tpg_tiqn;
 308         int ret;
 309
 310         spin_lock(&tpg->tpg_state_lock);
 311         if (tpg->tpg_state == TPG_STATE_ACTIVE) {
 312                 pr_err("iSCSI target portal group: %hu is already"
 313                         " active, ignoring request.\n", tpg->tpgt);
 314                 spin_unlock(&tpg->tpg_state_lock);
 315                 return -EINVAL;
 316         }
 317         /*
 318          * Make sure that AuthMethod does not contain None as an option
 319          * unless explictly disabled.  Set the default to CHAP if authentication
 320          * is enforced (as per default), and remove the NONE option.
 321          */
 322         param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
 323         if (!param) {
 324                 spin_unlock(&tpg->tpg_state_lock);
 325                 return -EINVAL;
 326         }
 327
 328         if (ISCSI_TPG_ATTRIB(tpg)->authentication) {
 329                 if (!strcmp(param->value, NONE)) {
 330                         ret = iscsi_update_param_value(param, CHAP);
 331                         if (ret)
 332                                 goto err;
 333                 }
 334
 335                 ret = iscsit_ta_authentication(tpg, 1);
 336                 if (ret < 0)
 337                         goto err;
 338         }
 339
 340         tpg->tpg_state = TPG_STATE_ACTIVE;
 341         spin_unlock(&tpg->tpg_state_lock);
 342
 343         spin_lock(&tiqn->tiqn_tpg_lock);
 344         tiqn->tiqn_active_tpgs++;
 345         pr_debug("iSCSI_TPG[%hu] - Enabled iSCSI Target Portal Group\n",
 346                         tpg->tpgt);
 347         spin_unlock(&tiqn->tiqn_tpg_lock);
 348
 349         return 0;
 350
 351 err:
 352         spin_unlock(&tpg->tpg_state_lock);
 353         return ret;
 354 }
 355
 356 int iscsit_tpg_disable_portal_group(struct iscsi_portal_group *tpg, int force)
 357 {
 358         struct iscsi_tiqn *tiqn;
 359         u8 old_state = tpg->tpg_state;
 360
 361         spin_lock(&tpg->tpg_state_lock);
 362         if (tpg->tpg_state == TPG_STATE_INACTIVE) {
 363                 pr_err("iSCSI Target Portal Group: %hu is already"
 364                         " inactive, ignoring request.\n", tpg->tpgt);
 365                 spin_unlock(&tpg->tpg_state_lock);
 366                 return -EINVAL;
 367         }
 368         tpg->tpg_state = TPG_STATE_INACTIVE;
 369         spin_unlock(&tpg->tpg_state_lock);
 370
 371         iscsit_clear_tpg_np_login_threads(tpg);
 372
 373         if (iscsit_release_sessions_for_tpg(tpg, force) < 0) {
 374                 spin_lock(&tpg->tpg_state_lock);
 375                 tpg->tpg_state = old_state;
 376                 spin_unlock(&tpg->tpg_state_lock);
 377                 pr_err("Unable to disable iSCSI Target Portal Group:"
 378                         " %hu while active sessions exist, and force=0\n",
 379                         tpg->tpgt);
 380                 return -EPERM;
 381         }
 382
 383         tiqn = tpg->tpg_tiqn;
 384         if (!tiqn || (tpg == iscsit_global->discovery_tpg))
 385                 return 0;
 386
 387         spin_lock(&tiqn->tiqn_tpg_lock);
 388         tiqn->tiqn_active_tpgs--;
 389         pr_debug("iSCSI_TPG[%hu] - Disabled iSCSI Target Portal Group\n",
 390                         tpg->tpgt);
 391         spin_unlock(&tiqn->tiqn_tpg_lock);
 392
 393         return 0;
 394 }
 395
 396 struct iscsi_node_attrib *iscsit_tpg_get_node_attrib(
 397         struct iscsi_session *sess)
 398 {
 399         struct se_session *se_sess = sess->se_sess;
 400         struct se_node_acl *se_nacl = se_sess->se_node_acl;
 401         struct iscsi_node_acl *acl = container_of(se_nacl, struct iscsi_node_acl,
 402                                         se_node_acl);
 403
 404         return &acl->node_attrib;
 405 }
 406
 407 struct iscsi_tpg_np *iscsit_tpg_locate_child_np(
 408         struct iscsi_tpg_np *tpg_np,
 409         int network_transport)
 410 {
 411         struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
 412
 413         spin_lock(&tpg_np->tpg_np_parent_lock);
 414         list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
 415                         &tpg_np->tpg_np_parent_list, tpg_np_child_list) {
 416                 if (tpg_np_child->tpg_np->np_network_transport ==
 417                                 network_transport) {
 418                         spin_unlock(&tpg_np->tpg_np_parent_lock);
 419                         return tpg_np_child;
 420                 }
 421         }
 422         spin_unlock(&tpg_np->tpg_np_parent_lock);
 423
 424         return NULL;
 425 }
 426
 427 static bool iscsit_tpg_check_network_portal(
 428         struct iscsi_tiqn *tiqn,
 429         struct __kernel_sockaddr_storage *sockaddr,
 430         int network_transport)
 431 {
 432         struct iscsi_portal_group *tpg;
 433         struct iscsi_tpg_np *tpg_np;
 434         struct iscsi_np *np;
 435         bool match = false;
 436
 437         spin_lock(&tiqn->tiqn_tpg_lock);
 438         list_for_each_entry(tpg, &tiqn->tiqn_tpg_list, tpg_list) {
 439
 440                 spin_lock(&tpg->tpg_np_lock);
 441                 list_for_each_entry(tpg_np, &tpg->tpg_gnp_list, tpg_np_list) {
 442                         np = tpg_np->tpg_np;
 443
 444                         match = iscsit_check_np_match(sockaddr, np,
 445                                                 network_transport);
 446                         if (match == true)
 447                                 break;
 448                 }
 449                 spin_unlock(&tpg->tpg_np_lock);
 450         }
 451         spin_unlock(&tiqn->tiqn_tpg_lock);
 452
 453         return match;
 454 }
 455
 456 struct iscsi_tpg_np *iscsit_tpg_add_network_portal(
 457         struct iscsi_portal_group *tpg,
 458         struct __kernel_sockaddr_storage *sockaddr,
 459         char *ip_str,
 460         struct iscsi_tpg_np *tpg_np_parent,
 461         int network_transport)
 462 {
 463         struct iscsi_np *np;
 464         struct iscsi_tpg_np *tpg_np;
 465
 466         if (!tpg_np_parent) {
 467                 if (iscsit_tpg_check_network_portal(tpg->tpg_tiqn, sockaddr,
 468                                 network_transport) == true) {
 469                         pr_err("Network Portal: %s already exists on a"
 470                                 " different TPG on %s\n", ip_str,
 471                                 tpg->tpg_tiqn->tiqn);
 472                         return ERR_PTR(-EEXIST);
 473                 }
 474         }
 475
 476         tpg_np = kzalloc(sizeof(struct iscsi_tpg_np), GFP_KERNEL);
 477         if (!tpg_np) {
 478                 pr_err("Unable to allocate memory for"
 479                                 " struct iscsi_tpg_np.\n");
 480                 return ERR_PTR(-ENOMEM);
 481         }
 482
 483         np = iscsit_add_np(sockaddr, ip_str, network_transport);
 484         if (IS_ERR(np)) {
 485                 kfree(tpg_np);
 486                 return ERR_CAST(np);
 487         }
 488
 489         INIT_LIST_HEAD(&tpg_np->tpg_np_list);
 490         INIT_LIST_HEAD(&tpg_np->tpg_np_child_list);
 491         INIT_LIST_HEAD(&tpg_np->tpg_np_parent_list);
 492         spin_lock_init(&tpg_np->tpg_np_parent_lock);
 493         tpg_np->tpg_np          = np;
 494         tpg_np->tpg             = tpg;
 495
 496         spin_lock(&tpg->tpg_np_lock);
 497         list_add_tail(&tpg_np->tpg_np_list, &tpg->tpg_gnp_list);
 498         tpg->num_tpg_nps++;
 499         if (tpg->tpg_tiqn)
 500                 tpg->tpg_tiqn->tiqn_num_tpg_nps++;
 501         spin_unlock(&tpg->tpg_np_lock);
 502
 503         if (tpg_np_parent) {
 504                 tpg_np->tpg_np_parent = tpg_np_parent;
 505                 spin_lock(&tpg_np_parent->tpg_np_parent_lock);
 506                 list_add_tail(&tpg_np->tpg_np_child_list,
 507                         &tpg_np_parent->tpg_np_parent_list);
 508                 spin_unlock(&tpg_np_parent->tpg_np_parent_lock);
 509         }
 510
 511         pr_debug("CORE[%s] - Added Network Portal: %s:%hu,%hu on %s\n",
 512                 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
 513                 np->np_transport->name);
 514
 515         return tpg_np;
 516 }
 517
 518 static int iscsit_tpg_release_np(
 519         struct iscsi_tpg_np *tpg_np,
 520         struct iscsi_portal_group *tpg,
 521         struct iscsi_np *np)
 522 {
 523         iscsit_clear_tpg_np_login_thread(tpg_np, tpg);
 524
 525         pr_debug("CORE[%s] - Removed Network Portal: %s:%hu,%hu on %s\n",
 526                 tpg->tpg_tiqn->tiqn, np->np_ip, np->np_port, tpg->tpgt,
 527                 np->np_transport->name);
 528
 529         tpg_np->tpg_np = NULL;
 530         tpg_np->tpg = NULL;
 531         kfree(tpg_np);
 532         /*
 533          * iscsit_del_np() will shutdown struct iscsi_np when last TPG reference is released.
 534          */
 535         return iscsit_del_np(np);
 536 }
 537
 538 int iscsit_tpg_del_network_portal(
 539         struct iscsi_portal_group *tpg,
 540         struct iscsi_tpg_np *tpg_np)
 541 {
 542         struct iscsi_np *np;
 543         struct iscsi_tpg_np *tpg_np_child, *tpg_np_child_tmp;
 544         int ret = 0;
 545
 546         np = tpg_np->tpg_np;
 547         if (!np) {
 548                 pr_err("Unable to locate struct iscsi_np from"
 549                                 " struct iscsi_tpg_np\n");
 550                 return -EINVAL;
 551         }
 552
 553         if (!tpg_np->tpg_np_parent) {
 554                 /*
 555                  * We are the parent tpg network portal.  Release all of the
 556                  * child tpg_np's (eg: the non ISCSI_TCP ones) on our parent
 557                  * list first.
 558                  */
 559                 list_for_each_entry_safe(tpg_np_child, tpg_np_child_tmp,
 560                                 &tpg_np->tpg_np_parent_list,
 561                                 tpg_np_child_list) {
 562                         ret = iscsit_tpg_del_network_portal(tpg, tpg_np_child);
 563                         if (ret < 0)
 564                                 pr_err("iscsit_tpg_del_network_portal()"
 565                                         " failed: %d\n", ret);
 566                 }
 567         } else {
 568                 /*
 569                  * We are not the parent ISCSI_TCP tpg network portal.  Release
 570                  * our own network portals from the child list.
 571                  */
 572                 spin_lock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
 573                 list_del(&tpg_np->tpg_np_child_list);
 574                 spin_unlock(&tpg_np->tpg_np_parent->tpg_np_parent_lock);
 575         }
 576
 577         spin_lock(&tpg->tpg_np_lock);
 578         list_del(&tpg_np->tpg_np_list);
 579         tpg->num_tpg_nps--;
 580         if (tpg->tpg_tiqn)
 581                 tpg->tpg_tiqn->tiqn_num_tpg_nps--;
 582         spin_unlock(&tpg->tpg_np_lock);
 583
 584         return iscsit_tpg_release_np(tpg_np, tpg, np);
 585 }
 586
 587 int iscsit_tpg_set_initiator_node_queue_depth(
 588         struct iscsi_portal_group *tpg,
 589         unsigned char *initiatorname,
 590         u32 queue_depth,
 591         int force)
 592 {
 593         return core_tpg_set_initiator_node_queue_depth(&tpg->tpg_se_tpg,
 594                 initiatorname, queue_depth, force);
 595 }
 596
 597 int iscsit_ta_authentication(struct iscsi_portal_group *tpg, u32 authentication)
 598 {
 599         unsigned char buf1[256], buf2[256], *none = NULL;
 600         int len;
 601         struct iscsi_param *param;
 602         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 603
 604         if ((authentication != 1) && (authentication != 0)) {
 605                 pr_err("Illegal value for authentication parameter:"
 606                         " %u, ignoring request.\n", authentication);
 607                 return -EINVAL;
 608         }
 609
 610         memset(buf1, 0, sizeof(buf1));
 611         memset(buf2, 0, sizeof(buf2));
 612
 613         param = iscsi_find_param_from_key(AUTHMETHOD, tpg->param_list);
 614         if (!param)
 615                 return -EINVAL;
 616
 617         if (authentication) {
 618                 snprintf(buf1, sizeof(buf1), "%s", param->value);
 619                 none = strstr(buf1, NONE);
 620                 if (!none)
 621                         goto out;
 622                 if (!strncmp(none + 4, ",", 1)) {
 623                         if (!strcmp(buf1, none))
 624                                 sprintf(buf2, "%s", none+5);
 625                         else {
 626                                 none--;
 627                                 *none = '\0';
 628                                 len = sprintf(buf2, "%s", buf1);
 629                                 none += 5;
 630                                 sprintf(buf2 + len, "%s", none);
 631                         }
 632                 } else {
 633                         none--;
 634                         *none = '\0';
 635                         sprintf(buf2, "%s", buf1);
 636                 }
 637                 if (iscsi_update_param_value(param, buf2) < 0)
 638                         return -EINVAL;
 639         } else {
 640                 snprintf(buf1, sizeof(buf1), "%s", param->value);
 641                 none = strstr(buf1, NONE);
 642                 if (none)
 643                         goto out;
 644                 strncat(buf1, ",", strlen(","));
 645                 strncat(buf1, NONE, strlen(NONE));
 646                 if (iscsi_update_param_value(param, buf1) < 0)
 647                         return -EINVAL;
 648         }
 649
 650 out:
 651         a->authentication = authentication;
 652         pr_debug("%s iSCSI Authentication Methods for TPG: %hu.\n",
 653                 a->authentication ? "Enforcing" : "Disabling", tpg->tpgt);
 654
 655         return 0;
 656 }
 657
 658 int iscsit_ta_login_timeout(
 659         struct iscsi_portal_group *tpg,
 660         u32 login_timeout)
 661 {
 662         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 663
 664         if (login_timeout > TA_LOGIN_TIMEOUT_MAX) {
 665                 pr_err("Requested Login Timeout %u larger than maximum"
 666                         " %u\n", login_timeout, TA_LOGIN_TIMEOUT_MAX);
 667                 return -EINVAL;
 668         } else if (login_timeout < TA_LOGIN_TIMEOUT_MIN) {
 669                 pr_err("Requested Logout Timeout %u smaller than"
 670                         " minimum %u\n", login_timeout, TA_LOGIN_TIMEOUT_MIN);
 671                 return -EINVAL;
 672         }
 673
 674         a->login_timeout = login_timeout;
 675         pr_debug("Set Logout Timeout to %u for Target Portal Group"
 676                 " %hu\n", a->login_timeout, tpg->tpgt);
 677
 678         return 0;
 679 }
 680
 681 int iscsit_ta_netif_timeout(
 682         struct iscsi_portal_group *tpg,
 683         u32 netif_timeout)
 684 {
 685         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 686
 687         if (netif_timeout > TA_NETIF_TIMEOUT_MAX) {
 688                 pr_err("Requested Network Interface Timeout %u larger"
 689                         " than maximum %u\n", netif_timeout,
 690                                 TA_NETIF_TIMEOUT_MAX);
 691                 return -EINVAL;
 692         } else if (netif_timeout < TA_NETIF_TIMEOUT_MIN) {
 693                 pr_err("Requested Network Interface Timeout %u smaller"
 694                         " than minimum %u\n", netif_timeout,
 695                                 TA_NETIF_TIMEOUT_MIN);
 696                 return -EINVAL;
 697         }
 698
 699         a->netif_timeout = netif_timeout;
 700         pr_debug("Set Network Interface Timeout to %u for"
 701                 " Target Portal Group %hu\n", a->netif_timeout, tpg->tpgt);
 702
 703         return 0;
 704 }
 705
 706 int iscsit_ta_generate_node_acls(
 707         struct iscsi_portal_group *tpg,
 708         u32 flag)
 709 {
 710         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 711
 712         if ((flag != 0) && (flag != 1)) {
 713                 pr_err("Illegal value %d\n", flag);
 714                 return -EINVAL;
 715         }
 716
 717         a->generate_node_acls = flag;
 718         pr_debug("iSCSI_TPG[%hu] - Generate Initiator Portal Group ACLs: %s\n",
 719                 tpg->tpgt, (a->generate_node_acls) ? "Enabled" : "Disabled");
 720
 721         if (flag == 1 && a->cache_dynamic_acls == 0) {
 722                 pr_debug("Explicitly setting cache_dynamic_acls=1 when "
 723                         "generate_node_acls=1\n");
 724                 a->cache_dynamic_acls = 1;
 725         }
 726
 727         return 0;
 728 }
 729
 730 int iscsit_ta_default_cmdsn_depth(
 731         struct iscsi_portal_group *tpg,
 732         u32 tcq_depth)
 733 {
 734         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 735
 736         if (tcq_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 737                 pr_err("Requested Default Queue Depth: %u larger"
 738                         " than maximum %u\n", tcq_depth,
 739                                 TA_DEFAULT_CMDSN_DEPTH_MAX);
 740                 return -EINVAL;
 741         } else if (tcq_depth < TA_DEFAULT_CMDSN_DEPTH_MIN) {
 742                 pr_err("Requested Default Queue Depth: %u smaller"
 743                         " than minimum %u\n", tcq_depth,
 744                                 TA_DEFAULT_CMDSN_DEPTH_MIN);
 745                 return -EINVAL;
 746         }
 747
 748         a->default_cmdsn_depth = tcq_depth;
 749         pr_debug("iSCSI_TPG[%hu] - Set Default CmdSN TCQ Depth to %u\n",
 750                 tpg->tpgt, a->default_cmdsn_depth);
 751
 752         return 0;
 753 }
 754
 755 int iscsit_ta_cache_dynamic_acls(
 756         struct iscsi_portal_group *tpg,
 757         u32 flag)
 758 {
 759         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 760
 761         if ((flag != 0) && (flag != 1)) {
 762                 pr_err("Illegal value %d\n", flag);
 763                 return -EINVAL;
 764         }
 765
 766         if (a->generate_node_acls == 1 && flag == 0) {
 767                 pr_debug("Skipping cache_dynamic_acls=0 when"
 768                         " generate_node_acls=1\n");
 769                 return 0;
 770         }
 771
 772         a->cache_dynamic_acls = flag;
 773         pr_debug("iSCSI_TPG[%hu] - Cache Dynamic Initiator Portal Group"
 774                 " ACLs %s\n", tpg->tpgt, (a->cache_dynamic_acls) ?
 775                 "Enabled" : "Disabled");
 776
 777         return 0;
 778 }
 779
 780 int iscsit_ta_demo_mode_write_protect(
 781         struct iscsi_portal_group *tpg,
 782         u32 flag)
 783 {
 784         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 785
 786         if ((flag != 0) && (flag != 1)) {
 787                 pr_err("Illegal value %d\n", flag);
 788                 return -EINVAL;
 789         }
 790
 791         a->demo_mode_write_protect = flag;
 792         pr_debug("iSCSI_TPG[%hu] - Demo Mode Write Protect bit: %s\n",
 793                 tpg->tpgt, (a->demo_mode_write_protect) ? "ON" : "OFF");
 794
 795         return 0;
 796 }
 797
 798 int iscsit_ta_prod_mode_write_protect(
 799         struct iscsi_portal_group *tpg,
 800         u32 flag)
 801 {
 802         struct iscsi_tpg_attrib *a = &tpg->tpg_attrib;
 803
 804         if ((flag != 0) && (flag != 1)) {
 805                 pr_err("Illegal value %d\n", flag);
 806                 return -EINVAL;
 807         }
 808
 809         a->prod_mode_write_protect = flag;
 810         pr_debug("iSCSI_TPG[%hu] - Production Mode Write Protect bit:"
 811                 " %s\n", tpg->tpgt, (a->prod_mode_write_protect) ?
 812                 "ON" : "OFF");
 813
 814         return 0;
 815 }