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