drivers/target/iscsi/iscsi_target_configfs.c

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