drivers/target/iscsi/iscsi_target_configfs.c

   1 // SPDX-License-Identifier: GPL-2.0-or-later
   2 /*******************************************************************************
   3  * This file contains the configfs implementation for iSCSI Target mode
   4  * from the LIO-Target Project.
   5  *
   6  * (c) Copyright 2007-2013 Datera, Inc.
   7  *
   8  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   9  *
  10  ****************************************************************************/
  11
  12 #include <linux/configfs.h>
  13 #include <linux/ctype.h>
  14 #include <linux/export.h>
  15 #include <linux/inet.h>
  16 #include <linux/module.h>
  17 #include <net/ipv6.h>
  18 #include <target/target_core_base.h>
  19 #include <target/target_core_fabric.h>
  20 #include <target/iscsi/iscsi_transport.h>
  21 #include <target/iscsi/iscsi_target_core.h>
  22 #include "iscsi_target_parameters.h"
  23 #include "iscsi_target_device.h"
  24 #include "iscsi_target_erl0.h"
  25 #include "iscsi_target_nodeattrib.h"
  26 #include "iscsi_target_tpg.h"
  27 #include "iscsi_target_util.h"
  28 #include "iscsi_target.h"
  29 #include <target/iscsi/iscsi_target_stat.h>
  30
  31
  32 /* Start items for lio_target_portal_cit */
  33
  34 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
  35 {
  36         return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
  37 }
  38
  39 static ssize_t lio_target_np_driver_show(struct config_item *item, char *page,
  40                                          enum iscsit_transport_type type)
  41 {
  42         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
  43         struct iscsi_tpg_np *tpg_np_new;
  44         ssize_t rb;
  45
  46         tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
  47         if (tpg_np_new)
  48                 rb = sysfs_emit(page, "1\n");
  49         else
  50                 rb = sysfs_emit(page, "0\n");
  51
  52         return rb;
  53 }
  54
  55 static ssize_t lio_target_np_driver_store(struct config_item *item,
  56                 const char *page, size_t count, enum iscsit_transport_type type,
  57                 const char *mod_name)
  58 {
  59         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
  60         struct iscsi_np *np;
  61         struct iscsi_portal_group *tpg;
  62         struct iscsi_tpg_np *tpg_np_new = NULL;
  63         u32 op;
  64         int rc;
  65
  66         rc = kstrtou32(page, 0, &op);
  67         if (rc)
  68                 return rc;
  69         if ((op != 1) && (op != 0)) {
  70                 pr_err("Illegal value for tpg_enable: %u\n", op);
  71                 return -EINVAL;
  72         }
  73         np = tpg_np->tpg_np;
  74         if (!np) {
  75                 pr_err("Unable to locate struct iscsi_np from"
  76                                 " struct iscsi_tpg_np\n");
  77                 return -EINVAL;
  78         }
  79
  80         tpg = tpg_np->tpg;
  81         if (iscsit_get_tpg(tpg) < 0)
  82                 return -EINVAL;
  83
  84         if (op) {
  85                 if (strlen(mod_name)) {
  86                         rc = request_module(mod_name);
  87                         if (rc != 0) {
  88                                 pr_warn("Unable to request_module for %s\n",
  89                                         mod_name);
  90                                 rc = 0;
  91                         }
  92                 }
  93
  94                 tpg_np_new = iscsit_tpg_add_network_portal(tpg,
  95                                         &np->np_sockaddr, tpg_np, type);
  96                 if (IS_ERR(tpg_np_new)) {
  97                         rc = PTR_ERR(tpg_np_new);
  98                         goto out;
  99                 }
 100         } else {
 101                 tpg_np_new = iscsit_tpg_locate_child_np(tpg_np, type);
 102                 if (tpg_np_new) {
 103                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_new);
 104                         if (rc < 0)
 105                                 goto out;
 106                 }
 107         }
 108
 109         iscsit_put_tpg(tpg);
 110         return count;
 111 out:
 112         iscsit_put_tpg(tpg);
 113         return rc;
 114 }
 115
 116 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
 117 {
 118         return lio_target_np_driver_show(item, page, ISCSI_INFINIBAND);
 119 }
 120
 121 static ssize_t lio_target_np_iser_store(struct config_item *item,
 122                                         const char *page, size_t count)
 123 {
 124         return lio_target_np_driver_store(item, page, count,
 125                                           ISCSI_INFINIBAND, "ib_isert");
 126 }
 127 CONFIGFS_ATTR(lio_target_np_, iser);
 128
 129 static ssize_t lio_target_np_cxgbit_show(struct config_item *item, char *page)
 130 {
 131         return lio_target_np_driver_show(item, page, ISCSI_CXGBIT);
 132 }
 133
 134 static ssize_t lio_target_np_cxgbit_store(struct config_item *item,
 135                                           const char *page, size_t count)
 136 {
 137         return lio_target_np_driver_store(item, page, count,
 138                                           ISCSI_CXGBIT, "cxgbit");
 139 }
 140 CONFIGFS_ATTR(lio_target_np_, cxgbit);
 141
 142 static struct configfs_attribute *lio_target_portal_attrs[] = {
 143         &lio_target_np_attr_iser,
 144         &lio_target_np_attr_cxgbit,
 145         NULL,
 146 };
 147
 148 /* Stop items for lio_target_portal_cit */
 149
 150 /* Start items for lio_target_np_cit */
 151
 152 #define MAX_PORTAL_LEN          256
 153
 154 static struct se_tpg_np *lio_target_call_addnptotpg(
 155         struct se_portal_group *se_tpg,
 156         struct config_group *group,
 157         const char *name)
 158 {
 159         struct iscsi_portal_group *tpg;
 160         struct iscsi_tpg_np *tpg_np;
 161         char *str, *str2, *ip_str, *port_str;
 162         struct sockaddr_storage sockaddr = { };
 163         int ret;
 164         char buf[MAX_PORTAL_LEN + 1] = { };
 165
 166         if (strlen(name) > MAX_PORTAL_LEN) {
 167                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 168                         (int)strlen(name), MAX_PORTAL_LEN);
 169                 return ERR_PTR(-EOVERFLOW);
 170         }
 171         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 172
 173         str = strstr(buf, "[");
 174         if (str) {
 175                 str2 = strstr(str, "]");
 176                 if (!str2) {
 177                         pr_err("Unable to locate trailing \"]\""
 178                                 " in IPv6 iSCSI network portal address\n");
 179                         return ERR_PTR(-EINVAL);
 180                 }
 181
 182                 ip_str = str + 1; /* Skip over leading "[" */
 183                 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
 184                 str2++; /* Skip over the \0 */
 185
 186                 port_str = strstr(str2, ":");
 187                 if (!port_str) {
 188                         pr_err("Unable to locate \":port\""
 189                                 " in IPv6 iSCSI network portal address\n");
 190                         return ERR_PTR(-EINVAL);
 191                 }
 192                 *port_str = '\0'; /* Terminate string for IP */
 193                 port_str++; /* Skip over ":" */
 194         } else {
 195                 ip_str = &buf[0];
 196                 port_str = strstr(ip_str, ":");
 197                 if (!port_str) {
 198                         pr_err("Unable to locate \":port\""
 199                                 " in IPv4 iSCSI network portal address\n");
 200                         return ERR_PTR(-EINVAL);
 201                 }
 202                 *port_str = '\0'; /* Terminate string for IP */
 203                 port_str++; /* Skip over ":" */
 204         }
 205
 206         ret = inet_pton_with_scope(&init_net, AF_UNSPEC, ip_str,
 207                         port_str, &sockaddr);
 208         if (ret) {
 209                 pr_err("malformed ip/port passed: %s\n", name);
 210                 return ERR_PTR(ret);
 211         }
 212
 213         tpg = to_iscsi_tpg(se_tpg);
 214         ret = iscsit_get_tpg(tpg);
 215         if (ret < 0)
 216                 return ERR_PTR(-EINVAL);
 217
 218         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 219                 " PORTAL: %s\n",
 220                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 221                 tpg->tpgt, name);
 222         /*
 223          * Assume ISCSI_TCP by default.  Other network portals for other
 224          * iSCSI fabrics:
 225          *
 226          * Traditional iSCSI over SCTP (initial support)
 227          * iSER/TCP (TODO, hardware available)
 228          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 229          * iSER/IB (TODO, hardware available)
 230          *
 231          * can be enabled with attributes under
 232          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 233          *
 234          */
 235         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
 236                                 ISCSI_TCP);
 237         if (IS_ERR(tpg_np)) {
 238                 iscsit_put_tpg(tpg);
 239                 return ERR_CAST(tpg_np);
 240         }
 241         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 242
 243         iscsit_put_tpg(tpg);
 244         return &tpg_np->se_tpg_np;
 245 }
 246
 247 static void lio_target_call_delnpfromtpg(
 248         struct se_tpg_np *se_tpg_np)
 249 {
 250         struct iscsi_portal_group *tpg;
 251         struct iscsi_tpg_np *tpg_np;
 252         struct se_portal_group *se_tpg;
 253         int ret;
 254
 255         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 256         tpg = tpg_np->tpg;
 257         ret = iscsit_get_tpg(tpg);
 258         if (ret < 0)
 259                 return;
 260
 261         se_tpg = &tpg->tpg_se_tpg;
 262         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 263                 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 264                 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
 265
 266         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 267         if (ret < 0)
 268                 goto out;
 269
 270         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 271 out:
 272         iscsit_put_tpg(tpg);
 273 }
 274
 275 /* End items for lio_target_np_cit */
 276
 277 /* Start items for lio_target_nacl_attrib_cit */
 278
 279 #define ISCSI_NACL_ATTR(name)                                           \
 280 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
 281                 char *page)                                             \
 282 {                                                                       \
 283         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
 284         struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);           \
 285         return sysfs_emit(page, "%u\n", nacl->node_attrib.name);                \
 286 }                                                                       \
 287                                                                         \
 288 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
 289                 const char *page, size_t count)                         \
 290 {                                                                       \
 291         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
 292         struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);           \
 293         u32 val;                                                        \
 294         int ret;                                                        \
 295                                                                         \
 296         ret = kstrtou32(page, 0, &val);                                 \
 297         if (ret)                                                        \
 298                 return ret;                                             \
 299         ret = iscsit_na_##name(nacl, val);                              \
 300         if (ret < 0)                                                    \
 301                 return ret;                                             \
 302                                                                         \
 303         return count;                                                   \
 304 }                                                                       \
 305                                                                         \
 306 CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
 307
 308 ISCSI_NACL_ATTR(dataout_timeout);
 309 ISCSI_NACL_ATTR(dataout_timeout_retries);
 310 ISCSI_NACL_ATTR(default_erl);
 311 ISCSI_NACL_ATTR(nopin_timeout);
 312 ISCSI_NACL_ATTR(nopin_response_timeout);
 313 ISCSI_NACL_ATTR(random_datain_pdu_offsets);
 314 ISCSI_NACL_ATTR(random_datain_seq_offsets);
 315 ISCSI_NACL_ATTR(random_r2t_offsets);
 316
 317 static ssize_t iscsi_nacl_attrib_authentication_show(struct config_item *item,
 318                 char *page)
 319 {
 320         struct se_node_acl *se_nacl = attrib_to_nacl(item);
 321         struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);
 322
 323         return sysfs_emit(page, "%d\n", nacl->node_attrib.authentication);
 324 }
 325
 326 static ssize_t iscsi_nacl_attrib_authentication_store(struct config_item *item,
 327                 const char *page, size_t count)
 328 {
 329         struct se_node_acl *se_nacl = attrib_to_nacl(item);
 330         struct iscsi_node_acl *nacl = to_iscsi_nacl(se_nacl);
 331         s32 val;
 332         int ret;
 333
 334         ret = kstrtos32(page, 0, &val);
 335         if (ret)
 336                 return ret;
 337         if (val != 0 && val != 1 && val != NA_AUTHENTICATION_INHERITED)
 338                 return -EINVAL;
 339
 340         nacl->node_attrib.authentication = val;
 341
 342         return count;
 343 }
 344
 345 CONFIGFS_ATTR(iscsi_nacl_attrib_, authentication);
 346
 347 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 348         &iscsi_nacl_attrib_attr_dataout_timeout,
 349         &iscsi_nacl_attrib_attr_dataout_timeout_retries,
 350         &iscsi_nacl_attrib_attr_default_erl,
 351         &iscsi_nacl_attrib_attr_nopin_timeout,
 352         &iscsi_nacl_attrib_attr_nopin_response_timeout,
 353         &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
 354         &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
 355         &iscsi_nacl_attrib_attr_random_r2t_offsets,
 356         &iscsi_nacl_attrib_attr_authentication,
 357         NULL,
 358 };
 359
 360 /* End items for lio_target_nacl_attrib_cit */
 361
 362 /* Start items for lio_target_nacl_auth_cit */
 363
 364 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 365 static ssize_t __iscsi_##prefix##_##name##_show(                        \
 366         struct iscsi_node_acl *nacl,                                    \
 367         char *page)                                                     \
 368 {                                                                       \
 369         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 370                                                                         \
 371         if (!capable(CAP_SYS_ADMIN))                                    \
 372                 return -EPERM;                                          \
 373         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 374 }                                                                       \
 375                                                                         \
 376 static ssize_t __iscsi_##prefix##_##name##_store(                       \
 377         struct iscsi_node_acl *nacl,                                    \
 378         const char *page,                                               \
 379         size_t count)                                                   \
 380 {                                                                       \
 381         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 382                                                                         \
 383         if (!capable(CAP_SYS_ADMIN))                                    \
 384                 return -EPERM;                                          \
 385         if (count >= sizeof(auth->name))                                \
 386                 return -EINVAL;                                         \
 387         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 388         if (!strncmp("NULL", auth->name, 4))                            \
 389                 auth->naf_flags &= ~flags;                              \
 390         else                                                            \
 391                 auth->naf_flags |= flags;                               \
 392                                                                         \
 393         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 394             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 395                 auth->authenticate_target = 1;                          \
 396         else                                                            \
 397                 auth->authenticate_target = 0;                          \
 398                                                                         \
 399         return count;                                                   \
 400 }
 401
 402 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 403         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 404 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
 405                 char *page)                                             \
 406 {                                                                       \
 407         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 408         return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page);      \
 409 }                                                                       \
 410 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
 411                 const char *page, size_t count)                         \
 412 {                                                                       \
 413         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 414         return __iscsi_nacl_auth_##name##_store(to_iscsi_nacl(nacl),    \
 415                                                 page, count); \
 416 }                                                                       \
 417                                                                         \
 418 CONFIGFS_ATTR(iscsi_nacl_auth_, name)
 419
 420 /*
 421  * One-way authentication userid
 422  */
 423 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 424 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 425 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 426 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 427
 428 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 429 static ssize_t __iscsi_##prefix##_##name##_show(                                \
 430         struct iscsi_node_acl *nacl,                                    \
 431         char *page)                                                     \
 432 {                                                                       \
 433         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 434                                                                         \
 435         if (!capable(CAP_SYS_ADMIN))                                    \
 436                 return -EPERM;                                          \
 437                                                                         \
 438         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 439 }
 440
 441 #define DEF_NACL_AUTH_INT(name)                                         \
 442         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 443 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
 444                 char *page)                                             \
 445 {                                                                       \
 446         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 447         return __iscsi_nacl_auth_##name##_show(to_iscsi_nacl(nacl), page);      \
 448 }                                                                       \
 449                                                                         \
 450 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
 451
 452 DEF_NACL_AUTH_INT(authenticate_target);
 453
 454 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 455         &iscsi_nacl_auth_attr_userid,
 456         &iscsi_nacl_auth_attr_password,
 457         &iscsi_nacl_auth_attr_authenticate_target,
 458         &iscsi_nacl_auth_attr_userid_mutual,
 459         &iscsi_nacl_auth_attr_password_mutual,
 460         NULL,
 461 };
 462
 463 /* End items for lio_target_nacl_auth_cit */
 464
 465 /* Start items for lio_target_nacl_param_cit */
 466
 467 #define ISCSI_NACL_PARAM(name)                                          \
 468 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
 469                 char *page)                                             \
 470 {                                                                       \
 471         struct se_node_acl *se_nacl = param_to_nacl(item);              \
 472         struct iscsit_session *sess;                                    \
 473         struct se_session *se_sess;                                     \
 474         ssize_t rb;                                                     \
 475                                                                         \
 476         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 477         se_sess = se_nacl->nacl_sess;                                   \
 478         if (!se_sess) {                                                 \
 479                 rb = snprintf(page, PAGE_SIZE,                          \
 480                         "No Active iSCSI Session\n");                   \
 481         } else {                                                        \
 482                 sess = se_sess->fabric_sess_ptr;                        \
 483                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 484                         (u32)sess->sess_ops->name);                     \
 485         }                                                               \
 486         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 487                                                                         \
 488         return rb;                                                      \
 489 }                                                                       \
 490                                                                         \
 491 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
 492
 493 ISCSI_NACL_PARAM(MaxConnections);
 494 ISCSI_NACL_PARAM(InitialR2T);
 495 ISCSI_NACL_PARAM(ImmediateData);
 496 ISCSI_NACL_PARAM(MaxBurstLength);
 497 ISCSI_NACL_PARAM(FirstBurstLength);
 498 ISCSI_NACL_PARAM(DefaultTime2Wait);
 499 ISCSI_NACL_PARAM(DefaultTime2Retain);
 500 ISCSI_NACL_PARAM(MaxOutstandingR2T);
 501 ISCSI_NACL_PARAM(DataPDUInOrder);
 502 ISCSI_NACL_PARAM(DataSequenceInOrder);
 503 ISCSI_NACL_PARAM(ErrorRecoveryLevel);
 504
 505 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 506         &iscsi_nacl_param_attr_MaxConnections,
 507         &iscsi_nacl_param_attr_InitialR2T,
 508         &iscsi_nacl_param_attr_ImmediateData,
 509         &iscsi_nacl_param_attr_MaxBurstLength,
 510         &iscsi_nacl_param_attr_FirstBurstLength,
 511         &iscsi_nacl_param_attr_DefaultTime2Wait,
 512         &iscsi_nacl_param_attr_DefaultTime2Retain,
 513         &iscsi_nacl_param_attr_MaxOutstandingR2T,
 514         &iscsi_nacl_param_attr_DataPDUInOrder,
 515         &iscsi_nacl_param_attr_DataSequenceInOrder,
 516         &iscsi_nacl_param_attr_ErrorRecoveryLevel,
 517         NULL,
 518 };
 519
 520 /* End items for lio_target_nacl_param_cit */
 521
 522 /* Start items for lio_target_acl_cit */
 523
 524 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
 525 {
 526         struct se_node_acl *se_nacl = acl_to_nacl(item);
 527         struct iscsit_session *sess;
 528         struct iscsit_conn *conn;
 529         struct se_session *se_sess;
 530         ssize_t rb = 0;
 531         u32 max_cmd_sn;
 532
 533         spin_lock_bh(&se_nacl->nacl_sess_lock);
 534         se_sess = se_nacl->nacl_sess;
 535         if (!se_sess) {
 536                 rb += sysfs_emit_at(page, rb, "No active iSCSI Session for Initiator"
 537                         " Endpoint: %s\n", se_nacl->initiatorname);
 538         } else {
 539                 sess = se_sess->fabric_sess_ptr;
 540
 541                 rb += sysfs_emit_at(page, rb, "InitiatorName: %s\n",
 542                         sess->sess_ops->InitiatorName);
 543                 rb += sysfs_emit_at(page, rb, "InitiatorAlias: %s\n",
 544                         sess->sess_ops->InitiatorAlias);
 545
 546                 rb += sysfs_emit_at(page, rb,
 547                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
 548                               sess->sid, sess->isid, sess->tsih);
 549                 rb += sysfs_emit_at(page, rb, "SessionType: %s\n",
 550                                 (sess->sess_ops->SessionType) ?
 551                                 "Discovery" : "Normal");
 552                 rb += sysfs_emit_at(page, rb, "Session State: ");
 553                 switch (sess->session_state) {
 554                 case TARG_SESS_STATE_FREE:
 555                         rb += sysfs_emit_at(page, rb, "TARG_SESS_FREE\n");
 556                         break;
 557                 case TARG_SESS_STATE_ACTIVE:
 558                         rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_ACTIVE\n");
 559                         break;
 560                 case TARG_SESS_STATE_LOGGED_IN:
 561                         rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_LOGGED_IN\n");
 562                         break;
 563                 case TARG_SESS_STATE_FAILED:
 564                         rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_FAILED\n");
 565                         break;
 566                 case TARG_SESS_STATE_IN_CONTINUE:
 567                         rb += sysfs_emit_at(page, rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 568                         break;
 569                 default:
 570                         rb += sysfs_emit_at(page, rb, "ERROR: Unknown Session"
 571                                         " State!\n");
 572                         break;
 573                 }
 574
 575                 rb += sysfs_emit_at(page, rb, "---------------------[iSCSI Session"
 576                                 " Values]-----------------------\n");
 577                 rb += sysfs_emit_at(page, rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 578                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 579                 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
 580                 rb += sysfs_emit_at(page, rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 581                                 "   0x%08x   0x%08x\n",
 582                         sess->cmdsn_window,
 583                         (max_cmd_sn - sess->exp_cmd_sn) + 1,
 584                         sess->exp_cmd_sn, max_cmd_sn,
 585                         sess->init_task_tag, sess->targ_xfer_tag);
 586                 rb += sysfs_emit_at(page, rb, "----------------------[iSCSI"
 587                                 " Connections]-------------------------\n");
 588
 589                 spin_lock(&sess->conn_lock);
 590                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 591                         rb += sysfs_emit_at(page, rb, "CID: %hu  Connection"
 592                                         " State: ", conn->cid);
 593                         switch (conn->conn_state) {
 594                         case TARG_CONN_STATE_FREE:
 595                                 rb += sysfs_emit_at(page, rb,
 596                                         "TARG_CONN_STATE_FREE\n");
 597                                 break;
 598                         case TARG_CONN_STATE_XPT_UP:
 599                                 rb += sysfs_emit_at(page, rb,
 600                                         "TARG_CONN_STATE_XPT_UP\n");
 601                                 break;
 602                         case TARG_CONN_STATE_IN_LOGIN:
 603                                 rb += sysfs_emit_at(page, rb,
 604                                         "TARG_CONN_STATE_IN_LOGIN\n");
 605                                 break;
 606                         case TARG_CONN_STATE_LOGGED_IN:
 607                                 rb += sysfs_emit_at(page, rb,
 608                                         "TARG_CONN_STATE_LOGGED_IN\n");
 609                                 break;
 610                         case TARG_CONN_STATE_IN_LOGOUT:
 611                                 rb += sysfs_emit_at(page, rb,
 612                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 613                                 break;
 614                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 615                                 rb += sysfs_emit_at(page, rb,
 616                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 617                                 break;
 618                         case TARG_CONN_STATE_CLEANUP_WAIT:
 619                                 rb += sysfs_emit_at(page, rb,
 620                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 621                                 break;
 622                         default:
 623                                 rb += sysfs_emit_at(page, rb,
 624                                         "ERROR: Unknown Connection State!\n");
 625                                 break;
 626                         }
 627
 628                         rb += sysfs_emit_at(page, rb, "   Address %pISc %s", &conn->login_sockaddr,
 629                                 (conn->network_transport == ISCSI_TCP) ?
 630                                 "TCP" : "SCTP");
 631                         rb += sysfs_emit_at(page, rb, "  StatSN: 0x%08x\n",
 632                                 conn->stat_sn);
 633                 }
 634                 spin_unlock(&sess->conn_lock);
 635         }
 636         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 637
 638         return rb;
 639 }
 640
 641 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
 642                 char *page)
 643 {
 644         return sysfs_emit(page, "%u\n", acl_to_nacl(item)->queue_depth);
 645 }
 646
 647 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
 648                 const char *page, size_t count)
 649 {
 650         struct se_node_acl *se_nacl = acl_to_nacl(item);
 651         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 652         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
 653         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 654         u32 cmdsn_depth = 0;
 655         int ret;
 656
 657         ret = kstrtou32(page, 0, &cmdsn_depth);
 658         if (ret)
 659                 return ret;
 660         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 661                 pr_err("Passed cmdsn_depth: %u exceeds"
 662                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 663                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 664                 return -EINVAL;
 665         }
 666         acl_ci = &se_nacl->acl_group.cg_item;
 667         if (!acl_ci) {
 668                 pr_err("Unable to locatel acl_ci\n");
 669                 return -EINVAL;
 670         }
 671         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 672         if (!tpg_ci) {
 673                 pr_err("Unable to locate tpg_ci\n");
 674                 return -EINVAL;
 675         }
 676         wwn_ci = &tpg_ci->ci_group->cg_item;
 677         if (!wwn_ci) {
 678                 pr_err("Unable to locate config_item wwn_ci\n");
 679                 return -EINVAL;
 680         }
 681
 682         if (iscsit_get_tpg(tpg) < 0)
 683                 return -EINVAL;
 684
 685         ret = core_tpg_set_initiator_node_queue_depth(se_nacl, cmdsn_depth);
 686
 687         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 688                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 689                 config_item_name(tpg_ci), cmdsn_depth,
 690                 config_item_name(acl_ci));
 691
 692         iscsit_put_tpg(tpg);
 693         return (!ret) ? count : (ssize_t)ret;
 694 }
 695
 696 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
 697 {
 698         return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
 699 }
 700
 701 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
 702                 const char *page, size_t count)
 703 {
 704         struct se_node_acl *se_nacl = acl_to_nacl(item);
 705         int ret;
 706
 707         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 708
 709         if (ret < 0)
 710                 return ret;
 711         return count;
 712 }
 713
 714 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
 715 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
 716 CONFIGFS_ATTR(lio_target_nacl_, tag);
 717
 718 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 719         &lio_target_nacl_attr_info,
 720         &lio_target_nacl_attr_cmdsn_depth,
 721         &lio_target_nacl_attr_tag,
 722         NULL,
 723 };
 724
 725 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
 726                 const char *name)
 727 {
 728         struct iscsi_node_acl *acl = to_iscsi_nacl(se_nacl);
 729
 730         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 731                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 732         configfs_add_default_group(&acl->node_stat_grps.iscsi_sess_stats_group,
 733                         &se_nacl->acl_fabric_stat_group);
 734         return 0;
 735 }
 736
 737 /* End items for lio_target_acl_cit */
 738
 739 /* Start items for lio_target_tpg_attrib_cit */
 740
 741 #define DEF_TPG_ATTRIB(name)                                            \
 742                                                                         \
 743 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
 744                 char *page)                                             \
 745 {                                                                       \
 746         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 747         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);          \
 748         ssize_t rb;                                                     \
 749                                                                         \
 750         if (iscsit_get_tpg(tpg) < 0)                                    \
 751                 return -EINVAL;                                         \
 752                                                                         \
 753         rb = sysfs_emit(page, "%u\n", tpg->tpg_attrib.name);            \
 754         iscsit_put_tpg(tpg);                                            \
 755         return rb;                                                      \
 756 }                                                                       \
 757                                                                         \
 758 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
 759                 const char *page, size_t count)                         \
 760 {                                                                       \
 761         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 762         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);          \
 763         u32 val;                                                        \
 764         int ret;                                                        \
 765                                                                         \
 766         if (iscsit_get_tpg(tpg) < 0)                                    \
 767                 return -EINVAL;                                         \
 768                                                                         \
 769         ret = kstrtou32(page, 0, &val);                                 \
 770         if (ret)                                                        \
 771                 goto out;                                               \
 772         ret = iscsit_ta_##name(tpg, val);                               \
 773         if (ret < 0)                                                    \
 774                 goto out;                                               \
 775                                                                         \
 776         iscsit_put_tpg(tpg);                                            \
 777         return count;                                                   \
 778 out:                                                                    \
 779         iscsit_put_tpg(tpg);                                            \
 780         return ret;                                                     \
 781 }                                                                       \
 782 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
 783
 784 DEF_TPG_ATTRIB(authentication);
 785 DEF_TPG_ATTRIB(login_timeout);
 786 DEF_TPG_ATTRIB(generate_node_acls);
 787 DEF_TPG_ATTRIB(default_cmdsn_depth);
 788 DEF_TPG_ATTRIB(cache_dynamic_acls);
 789 DEF_TPG_ATTRIB(demo_mode_write_protect);
 790 DEF_TPG_ATTRIB(prod_mode_write_protect);
 791 DEF_TPG_ATTRIB(demo_mode_discovery);
 792 DEF_TPG_ATTRIB(default_erl);
 793 DEF_TPG_ATTRIB(t10_pi);
 794 DEF_TPG_ATTRIB(fabric_prot_type);
 795 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
 796 DEF_TPG_ATTRIB(login_keys_workaround);
 797
 798 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
 799         &iscsi_tpg_attrib_attr_authentication,
 800         &iscsi_tpg_attrib_attr_login_timeout,
 801         &iscsi_tpg_attrib_attr_generate_node_acls,
 802         &iscsi_tpg_attrib_attr_default_cmdsn_depth,
 803         &iscsi_tpg_attrib_attr_cache_dynamic_acls,
 804         &iscsi_tpg_attrib_attr_demo_mode_write_protect,
 805         &iscsi_tpg_attrib_attr_prod_mode_write_protect,
 806         &iscsi_tpg_attrib_attr_demo_mode_discovery,
 807         &iscsi_tpg_attrib_attr_default_erl,
 808         &iscsi_tpg_attrib_attr_t10_pi,
 809         &iscsi_tpg_attrib_attr_fabric_prot_type,
 810         &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
 811         &iscsi_tpg_attrib_attr_login_keys_workaround,
 812         NULL,
 813 };
 814
 815 /* End items for lio_target_tpg_attrib_cit */
 816
 817 /* Start items for lio_target_tpg_auth_cit */
 818
 819 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
 820 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
 821                 char *page)                                                     \
 822 {                                                                               \
 823         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);                  \
 824         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 825                                                                                 \
 826         if (!capable(CAP_SYS_ADMIN))                                            \
 827                 return -EPERM;                                                  \
 828                                                                                 \
 829         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
 830 }                                                                               \
 831                                                                                 \
 832 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
 833                 const char *page, size_t count)                                 \
 834 {                                                                               \
 835         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);                  \
 836         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 837                                                                                 \
 838         if (!capable(CAP_SYS_ADMIN))                                            \
 839                 return -EPERM;                                                  \
 840                                                                                 \
 841         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
 842         if (!(strncmp("NULL", auth->name, 4)))                                  \
 843                 auth->naf_flags &= ~flags;                                      \
 844         else                                                                    \
 845                 auth->naf_flags |= flags;                                       \
 846                                                                                 \
 847         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
 848             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
 849                 auth->authenticate_target = 1;                                  \
 850         else                                                                    \
 851                 auth->authenticate_target = 0;                                  \
 852                                                                                 \
 853         return count;                                                           \
 854 }
 855
 856 #define DEF_TPG_AUTH_STR(name, flags)                                           \
 857         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
 858 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
 859                 char *page)                                                     \
 860 {                                                                               \
 861         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
 862 }                                                                               \
 863                                                                                 \
 864 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item,          \
 865                 const char *page, size_t count)                                 \
 866 {                                                                               \
 867         return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
 868 }                                                                               \
 869                                                                                 \
 870 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
 871
 872
 873 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
 874 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
 875 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 876 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 877
 878 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
 879 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
 880                 char *page)                                                             \
 881 {                                                                               \
 882         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);                  \
 883         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 884                                                                                 \
 885         if (!capable(CAP_SYS_ADMIN))                                            \
 886                 return -EPERM;                                                  \
 887                                                                                 \
 888         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
 889 }
 890
 891 #define DEF_TPG_AUTH_INT(name)                                                  \
 892         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
 893 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
 894                 char *page) \
 895 {                                                                               \
 896         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
 897 }                                                                               \
 898 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
 899
 900 DEF_TPG_AUTH_INT(authenticate_target);
 901
 902 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
 903         &iscsi_tpg_auth_attr_userid,
 904         &iscsi_tpg_auth_attr_password,
 905         &iscsi_tpg_auth_attr_authenticate_target,
 906         &iscsi_tpg_auth_attr_userid_mutual,
 907         &iscsi_tpg_auth_attr_password_mutual,
 908         NULL,
 909 };
 910
 911 /* End items for lio_target_tpg_auth_cit */
 912
 913 /* Start items for lio_target_tpg_param_cit */
 914
 915 #define DEF_TPG_PARAM(name)                                             \
 916 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item,  \
 917                 char *page)                                             \
 918 {                                                                       \
 919         struct se_portal_group *se_tpg = param_to_tpg(item);            \
 920         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);          \
 921         struct iscsi_param *param;                                      \
 922         ssize_t rb;                                                     \
 923                                                                         \
 924         if (iscsit_get_tpg(tpg) < 0)                                    \
 925                 return -EINVAL;                                         \
 926                                                                         \
 927         param = iscsi_find_param_from_key(__stringify(name),            \
 928                                 tpg->param_list);                       \
 929         if (!param) {                                                   \
 930                 iscsit_put_tpg(tpg);                                    \
 931                 return -EINVAL;                                         \
 932         }                                                               \
 933         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
 934                                                                         \
 935         iscsit_put_tpg(tpg);                                            \
 936         return rb;                                                      \
 937 }                                                                       \
 938 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
 939                 const char *page, size_t count)                         \
 940 {                                                                       \
 941         struct se_portal_group *se_tpg = param_to_tpg(item);            \
 942         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);          \
 943         char *buf;                                                      \
 944         int ret, len;                                                   \
 945                                                                         \
 946         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
 947         if (!buf)                                                       \
 948                 return -ENOMEM;                                         \
 949         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
 950         if (isspace(buf[len-1]))                                        \
 951                 buf[len-1] = '\0'; /* Kill newline */                   \
 952                                                                         \
 953         if (iscsit_get_tpg(tpg) < 0) {                                  \
 954                 kfree(buf);                                             \
 955                 return -EINVAL;                                         \
 956         }                                                               \
 957                                                                         \
 958         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
 959         if (ret < 0)                                                    \
 960                 goto out;                                               \
 961                                                                         \
 962         kfree(buf);                                                     \
 963         iscsit_put_tpg(tpg);                                            \
 964         return count;                                                   \
 965 out:                                                                    \
 966         kfree(buf);                                                     \
 967         iscsit_put_tpg(tpg);                                            \
 968         return -EINVAL;                                                 \
 969 }                                                                       \
 970 CONFIGFS_ATTR(iscsi_tpg_param_, name)
 971
 972 DEF_TPG_PARAM(AuthMethod);
 973 DEF_TPG_PARAM(HeaderDigest);
 974 DEF_TPG_PARAM(DataDigest);
 975 DEF_TPG_PARAM(MaxConnections);
 976 DEF_TPG_PARAM(TargetAlias);
 977 DEF_TPG_PARAM(InitialR2T);
 978 DEF_TPG_PARAM(ImmediateData);
 979 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
 980 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
 981 DEF_TPG_PARAM(MaxBurstLength);
 982 DEF_TPG_PARAM(FirstBurstLength);
 983 DEF_TPG_PARAM(DefaultTime2Wait);
 984 DEF_TPG_PARAM(DefaultTime2Retain);
 985 DEF_TPG_PARAM(MaxOutstandingR2T);
 986 DEF_TPG_PARAM(DataPDUInOrder);
 987 DEF_TPG_PARAM(DataSequenceInOrder);
 988 DEF_TPG_PARAM(ErrorRecoveryLevel);
 989 DEF_TPG_PARAM(IFMarker);
 990 DEF_TPG_PARAM(OFMarker);
 991 DEF_TPG_PARAM(IFMarkInt);
 992 DEF_TPG_PARAM(OFMarkInt);
 993
 994 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
 995         &iscsi_tpg_param_attr_AuthMethod,
 996         &iscsi_tpg_param_attr_HeaderDigest,
 997         &iscsi_tpg_param_attr_DataDigest,
 998         &iscsi_tpg_param_attr_MaxConnections,
 999         &iscsi_tpg_param_attr_TargetAlias,
1000         &iscsi_tpg_param_attr_InitialR2T,
1001         &iscsi_tpg_param_attr_ImmediateData,
1002         &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1003         &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1004         &iscsi_tpg_param_attr_MaxBurstLength,
1005         &iscsi_tpg_param_attr_FirstBurstLength,
1006         &iscsi_tpg_param_attr_DefaultTime2Wait,
1007         &iscsi_tpg_param_attr_DefaultTime2Retain,
1008         &iscsi_tpg_param_attr_MaxOutstandingR2T,
1009         &iscsi_tpg_param_attr_DataPDUInOrder,
1010         &iscsi_tpg_param_attr_DataSequenceInOrder,
1011         &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1012         &iscsi_tpg_param_attr_IFMarker,
1013         &iscsi_tpg_param_attr_OFMarker,
1014         &iscsi_tpg_param_attr_IFMarkInt,
1015         &iscsi_tpg_param_attr_OFMarkInt,
1016         NULL,
1017 };
1018
1019 /* End items for lio_target_tpg_param_cit */
1020
1021 /* Start items for lio_target_tpg_cit */
1022
1023 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1024                 char *page)
1025 {
1026         return target_show_dynamic_sessions(to_tpg(item), page);
1027 }
1028
1029 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1030
1031 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1032         &lio_target_tpg_attr_dynamic_sessions,
1033         NULL,
1034 };
1035
1036 /* End items for lio_target_tpg_cit */
1037
1038 /* Start items for lio_target_tiqn_cit */
1039
1040 static struct se_portal_group *lio_target_tiqn_addtpg(struct se_wwn *wwn,
1041                                                       const char *name)
1042 {
1043         struct iscsi_portal_group *tpg;
1044         struct iscsi_tiqn *tiqn;
1045         char *tpgt_str;
1046         int ret;
1047         u16 tpgt;
1048
1049         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1050         /*
1051          * Only tpgt_# directory groups can be created below
1052          * target/iscsi/iqn.superturodiskarry/
1053          */
1054         tpgt_str = strstr(name, "tpgt_");
1055         if (!tpgt_str) {
1056                 pr_err("Unable to locate \"tpgt_#\" directory"
1057                                 " group\n");
1058                 return NULL;
1059         }
1060         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1061         ret = kstrtou16(tpgt_str, 0, &tpgt);
1062         if (ret)
1063                 return NULL;
1064
1065         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1066         if (!tpg)
1067                 return NULL;
1068
1069         ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1070         if (ret < 0)
1071                 goto free_out;
1072
1073         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1074         if (ret != 0)
1075                 goto out;
1076
1077         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1078         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1079                         name);
1080         return &tpg->tpg_se_tpg;
1081 out:
1082         core_tpg_deregister(&tpg->tpg_se_tpg);
1083 free_out:
1084         kfree(tpg);
1085         return NULL;
1086 }
1087
1088 static int lio_target_tiqn_enabletpg(struct se_portal_group *se_tpg,
1089                                      bool enable)
1090 {
1091         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1092         int ret;
1093
1094         ret = iscsit_get_tpg(tpg);
1095         if (ret < 0)
1096                 return -EINVAL;
1097
1098         if (enable) {
1099                 ret = iscsit_tpg_enable_portal_group(tpg);
1100                 if (ret < 0)
1101                         goto out;
1102         } else {
1103                 /*
1104                  * iscsit_tpg_disable_portal_group() assumes force=1
1105                  */
1106                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1107                 if (ret < 0)
1108                         goto out;
1109         }
1110
1111         iscsit_put_tpg(tpg);
1112         return 0;
1113 out:
1114         iscsit_put_tpg(tpg);
1115         return -EINVAL;
1116 }
1117
1118 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1119 {
1120         struct iscsi_portal_group *tpg;
1121         struct iscsi_tiqn *tiqn;
1122
1123         tpg = to_iscsi_tpg(se_tpg);
1124         tiqn = tpg->tpg_tiqn;
1125         /*
1126          * iscsit_tpg_del_portal_group() assumes force=1
1127          */
1128         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1129         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1130 }
1131
1132 /* End items for lio_target_tiqn_cit */
1133
1134 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1135
1136 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1137                 char *page)
1138 {
1139         return sysfs_emit(page, "Datera Inc. iSCSI Target %s\n", ISCSIT_VERSION);
1140 }
1141
1142 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1143
1144 static ssize_t lio_target_wwn_cpus_allowed_list_show(
1145                 struct config_item *item, char *page)
1146 {
1147         return sysfs_emit(page, "%*pbl\n",
1148                        cpumask_pr_args(iscsit_global->allowed_cpumask));
1149 }
1150
1151 static ssize_t lio_target_wwn_cpus_allowed_list_store(
1152                 struct config_item *item, const char *page, size_t count)
1153 {
1154         int ret = -ENOMEM;
1155         char *orig;
1156         cpumask_var_t new_allowed_cpumask;
1157
1158         if (!zalloc_cpumask_var(&new_allowed_cpumask, GFP_KERNEL))
1159                 goto out;
1160
1161         orig = kstrdup(page, GFP_KERNEL);
1162         if (!orig)
1163                 goto out_free_cpumask;
1164
1165         ret = cpulist_parse(orig, new_allowed_cpumask);
1166         if (!ret)
1167                 cpumask_copy(iscsit_global->allowed_cpumask,
1168                              new_allowed_cpumask);
1169
1170         kfree(orig);
1171 out_free_cpumask:
1172         free_cpumask_var(new_allowed_cpumask);
1173 out:
1174         return ret ? ret : count;
1175 }
1176
1177 CONFIGFS_ATTR(lio_target_wwn_, cpus_allowed_list);
1178
1179 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1180         &lio_target_wwn_attr_lio_version,
1181         &lio_target_wwn_attr_cpus_allowed_list,
1182         NULL,
1183 };
1184
1185 static struct se_wwn *lio_target_call_coreaddtiqn(
1186         struct target_fabric_configfs *tf,
1187         struct config_group *group,
1188         const char *name)
1189 {
1190         struct iscsi_tiqn *tiqn;
1191
1192         tiqn = iscsit_add_tiqn((unsigned char *)name);
1193         if (IS_ERR(tiqn))
1194                 return ERR_CAST(tiqn);
1195
1196         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1197         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1198                         " %s\n", name);
1199         return &tiqn->tiqn_wwn;
1200 }
1201
1202 static void lio_target_add_wwn_groups(struct se_wwn *wwn)
1203 {
1204         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1205
1206         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1207                         "iscsi_instance", &iscsi_stat_instance_cit);
1208         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1209                         &tiqn->tiqn_wwn.fabric_stat_group);
1210
1211         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1212                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1213         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1214                         &tiqn->tiqn_wwn.fabric_stat_group);
1215
1216         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1217                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1218         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1219                         &tiqn->tiqn_wwn.fabric_stat_group);
1220
1221         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1222                         "iscsi_login_stats", &iscsi_stat_login_cit);
1223         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1224                         &tiqn->tiqn_wwn.fabric_stat_group);
1225
1226         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1227                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1228         configfs_add_default_group(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1229                         &tiqn->tiqn_wwn.fabric_stat_group);
1230 }
1231
1232 static void lio_target_call_coredeltiqn(
1233         struct se_wwn *wwn)
1234 {
1235         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1236
1237         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1238                         tiqn->tiqn);
1239         iscsit_del_tiqn(tiqn);
1240 }
1241
1242 /* End LIO-Target TIQN struct contig_lio_target_cit */
1243
1244 /* Start lio_target_discovery_auth_cit */
1245
1246 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1247         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1248 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1249 {                                                                       \
1250         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1251                 page);                                                  \
1252 }                                                                       \
1253 static ssize_t iscsi_disc_##name##_store(struct config_item *item,      \
1254                 const char *page, size_t count)                         \
1255 {                                                                       \
1256         return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl,       \
1257                 page, count);                                           \
1258                                                                         \
1259 }                                                                       \
1260 CONFIGFS_ATTR(iscsi_disc_, name)
1261
1262 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1263 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1264 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1265 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1266
1267 #define DEF_DISC_AUTH_INT(name)                                         \
1268         __DEF_NACL_AUTH_INT(disc, name)                                 \
1269 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1270 {                                                                       \
1271         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1272                         page);                                          \
1273 }                                                                       \
1274 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1275
1276 DEF_DISC_AUTH_INT(authenticate_target);
1277
1278
1279 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1280                 char *page)
1281 {
1282         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1283
1284         return sysfs_emit(page, "%d\n", discovery_auth->enforce_discovery_auth);
1285 }
1286
1287 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1288                 const char *page, size_t count)
1289 {
1290         struct iscsi_param *param;
1291         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1292         u32 op;
1293         int err;
1294
1295         err = kstrtou32(page, 0, &op);
1296         if (err)
1297                 return -EINVAL;
1298         if ((op != 1) && (op != 0)) {
1299                 pr_err("Illegal value for enforce_discovery_auth:"
1300                                 " %u\n", op);
1301                 return -EINVAL;
1302         }
1303
1304         if (!discovery_tpg) {
1305                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1306                 return -EINVAL;
1307         }
1308
1309         param = iscsi_find_param_from_key(AUTHMETHOD,
1310                                 discovery_tpg->param_list);
1311         if (!param)
1312                 return -EINVAL;
1313
1314         if (op) {
1315                 /*
1316                  * Reset the AuthMethod key to CHAP.
1317                  */
1318                 if (iscsi_update_param_value(param, CHAP) < 0)
1319                         return -EINVAL;
1320
1321                 discovery_tpg->tpg_attrib.authentication = 1;
1322                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1323                 pr_debug("LIO-CORE[0] Successfully enabled"
1324                         " authentication enforcement for iSCSI"
1325                         " Discovery TPG\n");
1326         } else {
1327                 /*
1328                  * Reset the AuthMethod key to CHAP,None
1329                  */
1330                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1331                         return -EINVAL;
1332
1333                 discovery_tpg->tpg_attrib.authentication = 0;
1334                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1335                 pr_debug("LIO-CORE[0] Successfully disabled"
1336                         " authentication enforcement for iSCSI"
1337                         " Discovery TPG\n");
1338         }
1339
1340         return count;
1341 }
1342
1343 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1344
1345 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1346         &iscsi_disc_attr_userid,
1347         &iscsi_disc_attr_password,
1348         &iscsi_disc_attr_authenticate_target,
1349         &iscsi_disc_attr_userid_mutual,
1350         &iscsi_disc_attr_password_mutual,
1351         &iscsi_disc_attr_enforce_discovery_auth,
1352         NULL,
1353 };
1354
1355 /* End lio_target_discovery_auth_cit */
1356
1357 /* Start functions for target_core_fabric_ops */
1358
1359 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1360 {
1361         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1362
1363         return cmd->i_state;
1364 }
1365
1366 static u32 lio_sess_get_index(struct se_session *se_sess)
1367 {
1368         struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1369
1370         return sess->session_index;
1371 }
1372
1373 static u32 lio_sess_get_initiator_sid(
1374         struct se_session *se_sess,
1375         unsigned char *buf,
1376         u32 size)
1377 {
1378         struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1379         /*
1380          * iSCSI Initiator Session Identifier from RFC-3720.
1381          */
1382         return snprintf(buf, size, "%6phN", sess->isid);
1383 }
1384
1385 static int lio_queue_data_in(struct se_cmd *se_cmd)
1386 {
1387         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1388         struct iscsit_conn *conn = cmd->conn;
1389
1390         cmd->i_state = ISTATE_SEND_DATAIN;
1391         return conn->conn_transport->iscsit_queue_data_in(conn, cmd);
1392 }
1393
1394 static int lio_write_pending(struct se_cmd *se_cmd)
1395 {
1396         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1397         struct iscsit_conn *conn = cmd->conn;
1398
1399         if (!cmd->immediate_data && !cmd->unsolicited_data)
1400                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1401
1402         return 0;
1403 }
1404
1405 static int lio_queue_status(struct se_cmd *se_cmd)
1406 {
1407         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1408         struct iscsit_conn *conn = cmd->conn;
1409
1410         cmd->i_state = ISTATE_SEND_STATUS;
1411
1412         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1413                 return iscsit_add_cmd_to_response_queue(cmd, conn, cmd->i_state);
1414         }
1415         return conn->conn_transport->iscsit_queue_status(conn, cmd);
1416 }
1417
1418 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1419 {
1420         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1421
1422         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1423         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1424 }
1425
1426 static void lio_aborted_task(struct se_cmd *se_cmd)
1427 {
1428         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1429
1430         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1431 }
1432
1433 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1434 {
1435         return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1436 }
1437
1438 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1439 {
1440         return to_iscsi_tpg(se_tpg)->tpgt;
1441 }
1442
1443 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1444 {
1445         return to_iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1446 }
1447
1448 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1449 {
1450         return to_iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1451 }
1452
1453 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1454 {
1455         return to_iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1456 }
1457
1458 static int lio_tpg_check_demo_mode_write_protect(
1459         struct se_portal_group *se_tpg)
1460 {
1461         return to_iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1462 }
1463
1464 static int lio_tpg_check_prod_mode_write_protect(
1465         struct se_portal_group *se_tpg)
1466 {
1467         return to_iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1468 }
1469
1470 static int lio_tpg_check_prot_fabric_only(
1471         struct se_portal_group *se_tpg)
1472 {
1473         /*
1474          * Only report fabric_prot_type if t10_pi has also been enabled
1475          * for incoming ib_isert sessions.
1476          */
1477         if (!to_iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1478                 return 0;
1479         return to_iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1480 }
1481
1482 /*
1483  * This function calls iscsit_inc_session_usage_count() on the
1484  * struct iscsit_session in question.
1485  */
1486 static void lio_tpg_close_session(struct se_session *se_sess)
1487 {
1488         struct iscsit_session *sess = se_sess->fabric_sess_ptr;
1489         struct se_portal_group *se_tpg = &sess->tpg->tpg_se_tpg;
1490
1491         spin_lock_bh(&se_tpg->session_lock);
1492         spin_lock(&sess->conn_lock);
1493         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1494             atomic_read(&sess->session_logout) ||
1495             atomic_read(&sess->session_close) ||
1496             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1497                 spin_unlock(&sess->conn_lock);
1498                 spin_unlock_bh(&se_tpg->session_lock);
1499                 return;
1500         }
1501         iscsit_inc_session_usage_count(sess);
1502         atomic_set(&sess->session_reinstatement, 1);
1503         atomic_set(&sess->session_fall_back_to_erl0, 1);
1504         atomic_set(&sess->session_close, 1);
1505         spin_unlock(&sess->conn_lock);
1506
1507         iscsit_stop_time2retain_timer(sess);
1508         spin_unlock_bh(&se_tpg->session_lock);
1509
1510         iscsit_stop_session(sess, 1, 1);
1511         iscsit_dec_session_usage_count(sess);
1512 }
1513
1514 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1515 {
1516         return to_iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1517 }
1518
1519 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1520 {
1521         struct iscsi_node_acl *acl = to_iscsi_nacl(se_acl);
1522         struct se_portal_group *se_tpg = se_acl->se_tpg;
1523         struct iscsi_portal_group *tpg = to_iscsi_tpg(se_tpg);
1524
1525         acl->node_attrib.nacl = acl;
1526         iscsit_set_default_node_attribues(acl, tpg);
1527 }
1528
1529 static int lio_check_stop_free(struct se_cmd *se_cmd)
1530 {
1531         return target_put_sess_cmd(se_cmd);
1532 }
1533
1534 static void lio_release_cmd(struct se_cmd *se_cmd)
1535 {
1536         struct iscsit_cmd *cmd = container_of(se_cmd, struct iscsit_cmd, se_cmd);
1537
1538         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1539         iscsit_release_cmd(cmd);
1540 }
1541
1542 const struct target_core_fabric_ops iscsi_ops = {
1543         .module                         = THIS_MODULE,
1544         .fabric_alias                   = "iscsi",
1545         .fabric_name                    = "iSCSI",
1546         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1547         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1548         .tpg_get_tag                    = lio_tpg_get_tag,
1549         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1550         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1551         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1552         .tpg_check_demo_mode_write_protect =
1553                         lio_tpg_check_demo_mode_write_protect,
1554         .tpg_check_prod_mode_write_protect =
1555                         lio_tpg_check_prod_mode_write_protect,
1556         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1557         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1558         .check_stop_free                = lio_check_stop_free,
1559         .release_cmd                    = lio_release_cmd,
1560         .close_session                  = lio_tpg_close_session,
1561         .sess_get_index                 = lio_sess_get_index,
1562         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1563         .write_pending                  = lio_write_pending,
1564         .set_default_node_attributes    = lio_set_default_node_attributes,
1565         .get_cmd_state                  = iscsi_get_cmd_state,
1566         .queue_data_in                  = lio_queue_data_in,
1567         .queue_status                   = lio_queue_status,
1568         .queue_tm_rsp                   = lio_queue_tm_rsp,
1569         .aborted_task                   = lio_aborted_task,
1570         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1571         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1572         .add_wwn_groups                 = lio_target_add_wwn_groups,
1573         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1574         .fabric_enable_tpg              = lio_target_tiqn_enabletpg,
1575         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1576         .fabric_make_np                 = lio_target_call_addnptotpg,
1577         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1578         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1579
1580         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1581         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1582         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1583         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1584         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1585         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1586         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1587         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1588         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1589         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1590         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1591
1592         .write_pending_must_be_called   = 1,
1593
1594         .default_submit_type            = TARGET_DIRECT_SUBMIT,
1595         .direct_submit_supp             = 1,
1596 };