kernel/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 <target/target_core_base.h>
  25 #include <target/target_core_fabric.h>
  26 #include <target/iscsi/iscsi_transport.h>
  27
  28 #include <target/iscsi/iscsi_target_core.h>
  29 #include "iscsi_target_parameters.h"
  30 #include "iscsi_target_device.h"
  31 #include "iscsi_target_erl0.h"
  32 #include "iscsi_target_nodeattrib.h"
  33 #include "iscsi_target_tpg.h"
  34 #include "iscsi_target_util.h"
  35 #include "iscsi_target.h"
  36 #include <target/iscsi/iscsi_target_stat.h>
  37
  38
  39 /* Start items for lio_target_portal_cit */
  40
  41 static inline struct iscsi_tpg_np *to_iscsi_tpg_np(struct config_item *item)
  42 {
  43         return container_of(to_tpg_np(item), struct iscsi_tpg_np, se_tpg_np);
  44 }
  45
  46 static ssize_t lio_target_np_sctp_show(struct config_item *item, char *page)
  47 {
  48         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
  49         struct iscsi_tpg_np *tpg_np_sctp;
  50         ssize_t rb;
  51
  52         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  53         if (tpg_np_sctp)
  54                 rb = sprintf(page, "1\n");
  55         else
  56                 rb = sprintf(page, "0\n");
  57
  58         return rb;
  59 }
  60
  61 static ssize_t lio_target_np_sctp_store(struct config_item *item,
  62                 const char *page, size_t count)
  63 {
  64         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
  65         struct iscsi_np *np;
  66         struct iscsi_portal_group *tpg;
  67         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  68         u32 op;
  69         int ret;
  70
  71         ret = kstrtou32(page, 0, &op);
  72         if (ret)
  73                 return ret;
  74         if ((op != 1) && (op != 0)) {
  75                 pr_err("Illegal value for tpg_enable: %u\n", op);
  76                 return -EINVAL;
  77         }
  78         np = tpg_np->tpg_np;
  79         if (!np) {
  80                 pr_err("Unable to locate struct iscsi_np from"
  81                                 " struct iscsi_tpg_np\n");
  82                 return -EINVAL;
  83         }
  84
  85         tpg = tpg_np->tpg;
  86         if (iscsit_get_tpg(tpg) < 0)
  87                 return -EINVAL;
  88
  89         if (op) {
  90                 /*
  91                  * Use existing np->np_sockaddr for SCTP network portal reference
  92                  */
  93                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
  94                                         tpg_np, ISCSI_SCTP_TCP);
  95                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
  96                         goto out;
  97         } else {
  98                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  99                 if (!tpg_np_sctp)
 100                         goto out;
 101
 102                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 103                 if (ret < 0)
 104                         goto out;
 105         }
 106
 107         iscsit_put_tpg(tpg);
 108         return count;
 109 out:
 110         iscsit_put_tpg(tpg);
 111         return -EINVAL;
 112 }
 113
 114 static ssize_t lio_target_np_iser_show(struct config_item *item, char *page)
 115 {
 116         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
 117         struct iscsi_tpg_np *tpg_np_iser;
 118         ssize_t rb;
 119
 120         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 121         if (tpg_np_iser)
 122                 rb = sprintf(page, "1\n");
 123         else
 124                 rb = sprintf(page, "0\n");
 125
 126         return rb;
 127 }
 128
 129 static ssize_t lio_target_np_iser_store(struct config_item *item,
 130                 const char *page, size_t count)
 131 {
 132         struct iscsi_tpg_np *tpg_np = to_iscsi_tpg_np(item);
 133         struct iscsi_np *np;
 134         struct iscsi_portal_group *tpg;
 135         struct iscsi_tpg_np *tpg_np_iser = NULL;
 136         char *endptr;
 137         u32 op;
 138         int rc = 0;
 139
 140         op = simple_strtoul(page, &endptr, 0);
 141         if ((op != 1) && (op != 0)) {
 142                 pr_err("Illegal value for tpg_enable: %u\n", op);
 143                 return -EINVAL;
 144         }
 145         np = tpg_np->tpg_np;
 146         if (!np) {
 147                 pr_err("Unable to locate struct iscsi_np from"
 148                                 " struct iscsi_tpg_np\n");
 149                 return -EINVAL;
 150         }
 151
 152         tpg = tpg_np->tpg;
 153         if (iscsit_get_tpg(tpg) < 0)
 154                 return -EINVAL;
 155
 156         if (op) {
 157                 rc = request_module("ib_isert");
 158                 if (rc != 0) {
 159                         pr_warn("Unable to request_module for ib_isert\n");
 160                         rc = 0;
 161                 }
 162
 163                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 164                                 tpg_np, ISCSI_INFINIBAND);
 165                 if (IS_ERR(tpg_np_iser)) {
 166                         rc = PTR_ERR(tpg_np_iser);
 167                         goto out;
 168                 }
 169         } else {
 170                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 171                 if (tpg_np_iser) {
 172                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 173                         if (rc < 0)
 174                                 goto out;
 175                 }
 176         }
 177
 178         iscsit_put_tpg(tpg);
 179         return count;
 180 out:
 181         iscsit_put_tpg(tpg);
 182         return rc;
 183 }
 184
 185 CONFIGFS_ATTR(lio_target_np_, sctp);
 186 CONFIGFS_ATTR(lio_target_np_, iser);
 187
 188 static struct configfs_attribute *lio_target_portal_attrs[] = {
 189         &lio_target_np_attr_sctp,
 190         &lio_target_np_attr_iser,
 191         NULL,
 192 };
 193
 194 /* Stop items for lio_target_portal_cit */
 195
 196 /* Start items for lio_target_np_cit */
 197
 198 #define MAX_PORTAL_LEN          256
 199
 200 static struct se_tpg_np *lio_target_call_addnptotpg(
 201         struct se_portal_group *se_tpg,
 202         struct config_group *group,
 203         const char *name)
 204 {
 205         struct iscsi_portal_group *tpg;
 206         struct iscsi_tpg_np *tpg_np;
 207         char *str, *str2, *ip_str, *port_str;
 208         struct sockaddr_storage sockaddr;
 209         struct sockaddr_in *sock_in;
 210         struct sockaddr_in6 *sock_in6;
 211         unsigned long port;
 212         int ret;
 213         char buf[MAX_PORTAL_LEN + 1];
 214
 215         if (strlen(name) > MAX_PORTAL_LEN) {
 216                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 217                         (int)strlen(name), MAX_PORTAL_LEN);
 218                 return ERR_PTR(-EOVERFLOW);
 219         }
 220         memset(buf, 0, MAX_PORTAL_LEN + 1);
 221         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 222
 223         memset(&sockaddr, 0, sizeof(struct sockaddr_storage));
 224
 225         str = strstr(buf, "[");
 226         if (str) {
 227                 const char *end;
 228
 229                 str2 = strstr(str, "]");
 230                 if (!str2) {
 231                         pr_err("Unable to locate trailing \"]\""
 232                                 " in IPv6 iSCSI network portal address\n");
 233                         return ERR_PTR(-EINVAL);
 234                 }
 235                 str++; /* Skip over leading "[" */
 236                 *str2 = '\0'; /* Terminate the unbracketed IPv6 address */
 237                 str2++; /* Skip over the \0 */
 238                 port_str = strstr(str2, ":");
 239                 if (!port_str) {
 240                         pr_err("Unable to locate \":port\""
 241                                 " in IPv6 iSCSI network portal address\n");
 242                         return ERR_PTR(-EINVAL);
 243                 }
 244                 *port_str = '\0'; /* Terminate string for IP */
 245                 port_str++; /* Skip over ":" */
 246
 247                 ret = kstrtoul(port_str, 0, &port);
 248                 if (ret < 0) {
 249                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 250                         return ERR_PTR(ret);
 251                 }
 252                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 253                 sock_in6->sin6_family = AF_INET6;
 254                 sock_in6->sin6_port = htons((unsigned short)port);
 255                 ret = in6_pton(str, -1,
 256                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 257                 if (ret <= 0) {
 258                         pr_err("in6_pton returned: %d\n", ret);
 259                         return ERR_PTR(-EINVAL);
 260                 }
 261         } else {
 262                 str = ip_str = &buf[0];
 263                 port_str = strstr(ip_str, ":");
 264                 if (!port_str) {
 265                         pr_err("Unable to locate \":port\""
 266                                 " in IPv4 iSCSI network portal address\n");
 267                         return ERR_PTR(-EINVAL);
 268                 }
 269                 *port_str = '\0'; /* Terminate string for IP */
 270                 port_str++; /* Skip over ":" */
 271
 272                 ret = kstrtoul(port_str, 0, &port);
 273                 if (ret < 0) {
 274                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 275                         return ERR_PTR(ret);
 276                 }
 277                 sock_in = (struct sockaddr_in *)&sockaddr;
 278                 sock_in->sin_family = AF_INET;
 279                 sock_in->sin_port = htons((unsigned short)port);
 280                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 281         }
 282         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 283         ret = iscsit_get_tpg(tpg);
 284         if (ret < 0)
 285                 return ERR_PTR(-EINVAL);
 286
 287         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 288                 " PORTAL: %s\n",
 289                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 290                 tpg->tpgt, name);
 291         /*
 292          * Assume ISCSI_TCP by default.  Other network portals for other
 293          * iSCSI fabrics:
 294          *
 295          * Traditional iSCSI over SCTP (initial support)
 296          * iSER/TCP (TODO, hardware available)
 297          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 298          * iSER/IB (TODO, hardware available)
 299          *
 300          * can be enabled with attributes under
 301          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 302          *
 303          */
 304         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, NULL,
 305                                 ISCSI_TCP);
 306         if (IS_ERR(tpg_np)) {
 307                 iscsit_put_tpg(tpg);
 308                 return ERR_CAST(tpg_np);
 309         }
 310         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 311
 312         iscsit_put_tpg(tpg);
 313         return &tpg_np->se_tpg_np;
 314 }
 315
 316 static void lio_target_call_delnpfromtpg(
 317         struct se_tpg_np *se_tpg_np)
 318 {
 319         struct iscsi_portal_group *tpg;
 320         struct iscsi_tpg_np *tpg_np;
 321         struct se_portal_group *se_tpg;
 322         int ret;
 323
 324         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 325         tpg = tpg_np->tpg;
 326         ret = iscsit_get_tpg(tpg);
 327         if (ret < 0)
 328                 return;
 329
 330         se_tpg = &tpg->tpg_se_tpg;
 331         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 332                 " PORTAL: %pISpc\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 333                 tpg->tpgt, &tpg_np->tpg_np->np_sockaddr);
 334
 335         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 336         if (ret < 0)
 337                 goto out;
 338
 339         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 340 out:
 341         iscsit_put_tpg(tpg);
 342 }
 343
 344 /* End items for lio_target_np_cit */
 345
 346 /* Start items for lio_target_nacl_attrib_cit */
 347
 348 #define ISCSI_NACL_ATTR(name)                                           \
 349 static ssize_t iscsi_nacl_attrib_##name##_show(struct config_item *item,\
 350                 char *page)                                             \
 351 {                                                                       \
 352         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
 353         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 354                                         se_node_acl);                   \
 355                                                                         \
 356         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 357 }                                                                       \
 358                                                                         \
 359 static ssize_t iscsi_nacl_attrib_##name##_store(struct config_item *item,\
 360                 const char *page, size_t count)                         \
 361 {                                                                       \
 362         struct se_node_acl *se_nacl = attrib_to_nacl(item);             \
 363         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 364                                         se_node_acl);                   \
 365         u32 val;                                                        \
 366         int ret;                                                        \
 367                                                                         \
 368         ret = kstrtou32(page, 0, &val);                                 \
 369         if (ret)                                                        \
 370                 return ret;                                             \
 371         ret = iscsit_na_##name(nacl, val);                              \
 372         if (ret < 0)                                                    \
 373                 return ret;                                             \
 374                                                                         \
 375         return count;                                                   \
 376 }                                                                       \
 377                                                                         \
 378 CONFIGFS_ATTR(iscsi_nacl_attrib_, name)
 379
 380 ISCSI_NACL_ATTR(dataout_timeout);
 381 ISCSI_NACL_ATTR(dataout_timeout_retries);
 382 ISCSI_NACL_ATTR(default_erl);
 383 ISCSI_NACL_ATTR(nopin_timeout);
 384 ISCSI_NACL_ATTR(nopin_response_timeout);
 385 ISCSI_NACL_ATTR(random_datain_pdu_offsets);
 386 ISCSI_NACL_ATTR(random_datain_seq_offsets);
 387 ISCSI_NACL_ATTR(random_r2t_offsets);
 388
 389 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 390         &iscsi_nacl_attrib_attr_dataout_timeout,
 391         &iscsi_nacl_attrib_attr_dataout_timeout_retries,
 392         &iscsi_nacl_attrib_attr_default_erl,
 393         &iscsi_nacl_attrib_attr_nopin_timeout,
 394         &iscsi_nacl_attrib_attr_nopin_response_timeout,
 395         &iscsi_nacl_attrib_attr_random_datain_pdu_offsets,
 396         &iscsi_nacl_attrib_attr_random_datain_seq_offsets,
 397         &iscsi_nacl_attrib_attr_random_r2t_offsets,
 398         NULL,
 399 };
 400
 401 /* End items for lio_target_nacl_attrib_cit */
 402
 403 /* Start items for lio_target_nacl_auth_cit */
 404
 405 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 406 static ssize_t __iscsi_##prefix##_##name##_show(                        \
 407         struct iscsi_node_acl *nacl,                                    \
 408         char *page)                                                     \
 409 {                                                                       \
 410         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 411                                                                         \
 412         if (!capable(CAP_SYS_ADMIN))                                    \
 413                 return -EPERM;                                          \
 414         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 415 }                                                                       \
 416                                                                         \
 417 static ssize_t __iscsi_##prefix##_##name##_store(                       \
 418         struct iscsi_node_acl *nacl,                                    \
 419         const char *page,                                               \
 420         size_t count)                                                   \
 421 {                                                                       \
 422         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 423                                                                         \
 424         if (!capable(CAP_SYS_ADMIN))                                    \
 425                 return -EPERM;                                          \
 426         if (count >= sizeof(auth->name))                                \
 427                 return -EINVAL;                                         \
 428         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 429         if (!strncmp("NULL", auth->name, 4))                            \
 430                 auth->naf_flags &= ~flags;                              \
 431         else                                                            \
 432                 auth->naf_flags |= flags;                               \
 433                                                                         \
 434         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 435             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 436                 auth->authenticate_target = 1;                          \
 437         else                                                            \
 438                 auth->authenticate_target = 0;                          \
 439                                                                         \
 440         return count;                                                   \
 441 }
 442
 443 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 444         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 445 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
 446                 char *page)                                             \
 447 {                                                                       \
 448         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 449         return __iscsi_nacl_auth_##name##_show(container_of(nacl,       \
 450                         struct iscsi_node_acl, se_node_acl), page);     \
 451 }                                                                       \
 452 static ssize_t iscsi_nacl_auth_##name##_store(struct config_item *item, \
 453                 const char *page, size_t count)                         \
 454 {                                                                       \
 455         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 456         return __iscsi_nacl_auth_##name##_store(container_of(nacl,      \
 457                         struct iscsi_node_acl, se_node_acl), page, count); \
 458 }                                                                       \
 459                                                                         \
 460 CONFIGFS_ATTR(iscsi_nacl_auth_, name)
 461
 462 /*
 463  * One-way authentication userid
 464  */
 465 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 466 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 467 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 468 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 469
 470 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 471 static ssize_t __iscsi_##prefix##_##name##_show(                                \
 472         struct iscsi_node_acl *nacl,                                    \
 473         char *page)                                                     \
 474 {                                                                       \
 475         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 476                                                                         \
 477         if (!capable(CAP_SYS_ADMIN))                                    \
 478                 return -EPERM;                                          \
 479                                                                         \
 480         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 481 }
 482
 483 #define DEF_NACL_AUTH_INT(name)                                         \
 484         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 485 static ssize_t iscsi_nacl_auth_##name##_show(struct config_item *item,  \
 486                 char *page)                                             \
 487 {                                                                       \
 488         struct se_node_acl *nacl = auth_to_nacl(item);                  \
 489         return __iscsi_nacl_auth_##name##_show(container_of(nacl,       \
 490                         struct iscsi_node_acl, se_node_acl), page);     \
 491 }                                                                       \
 492                                                                         \
 493 CONFIGFS_ATTR_RO(iscsi_nacl_auth_, name)
 494
 495 DEF_NACL_AUTH_INT(authenticate_target);
 496
 497 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 498         &iscsi_nacl_auth_attr_userid,
 499         &iscsi_nacl_auth_attr_password,
 500         &iscsi_nacl_auth_attr_authenticate_target,
 501         &iscsi_nacl_auth_attr_userid_mutual,
 502         &iscsi_nacl_auth_attr_password_mutual,
 503         NULL,
 504 };
 505
 506 /* End items for lio_target_nacl_auth_cit */
 507
 508 /* Start items for lio_target_nacl_param_cit */
 509
 510 #define ISCSI_NACL_PARAM(name)                                          \
 511 static ssize_t iscsi_nacl_param_##name##_show(struct config_item *item, \
 512                 char *page)                                             \
 513 {                                                                       \
 514         struct se_node_acl *se_nacl = param_to_nacl(item);              \
 515         struct iscsi_session *sess;                                     \
 516         struct se_session *se_sess;                                     \
 517         ssize_t rb;                                                     \
 518                                                                         \
 519         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 520         se_sess = se_nacl->nacl_sess;                                   \
 521         if (!se_sess) {                                                 \
 522                 rb = snprintf(page, PAGE_SIZE,                          \
 523                         "No Active iSCSI Session\n");                   \
 524         } else {                                                        \
 525                 sess = se_sess->fabric_sess_ptr;                        \
 526                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 527                         (u32)sess->sess_ops->name);                     \
 528         }                                                               \
 529         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 530                                                                         \
 531         return rb;                                                      \
 532 }                                                                       \
 533                                                                         \
 534 CONFIGFS_ATTR_RO(iscsi_nacl_param_, name)
 535
 536 ISCSI_NACL_PARAM(MaxConnections);
 537 ISCSI_NACL_PARAM(InitialR2T);
 538 ISCSI_NACL_PARAM(ImmediateData);
 539 ISCSI_NACL_PARAM(MaxBurstLength);
 540 ISCSI_NACL_PARAM(FirstBurstLength);
 541 ISCSI_NACL_PARAM(DefaultTime2Wait);
 542 ISCSI_NACL_PARAM(DefaultTime2Retain);
 543 ISCSI_NACL_PARAM(MaxOutstandingR2T);
 544 ISCSI_NACL_PARAM(DataPDUInOrder);
 545 ISCSI_NACL_PARAM(DataSequenceInOrder);
 546 ISCSI_NACL_PARAM(ErrorRecoveryLevel);
 547
 548 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 549         &iscsi_nacl_param_attr_MaxConnections,
 550         &iscsi_nacl_param_attr_InitialR2T,
 551         &iscsi_nacl_param_attr_ImmediateData,
 552         &iscsi_nacl_param_attr_MaxBurstLength,
 553         &iscsi_nacl_param_attr_FirstBurstLength,
 554         &iscsi_nacl_param_attr_DefaultTime2Wait,
 555         &iscsi_nacl_param_attr_DefaultTime2Retain,
 556         &iscsi_nacl_param_attr_MaxOutstandingR2T,
 557         &iscsi_nacl_param_attr_DataPDUInOrder,
 558         &iscsi_nacl_param_attr_DataSequenceInOrder,
 559         &iscsi_nacl_param_attr_ErrorRecoveryLevel,
 560         NULL,
 561 };
 562
 563 /* End items for lio_target_nacl_param_cit */
 564
 565 /* Start items for lio_target_acl_cit */
 566
 567 static ssize_t lio_target_nacl_info_show(struct config_item *item, char *page)
 568 {
 569         struct se_node_acl *se_nacl = acl_to_nacl(item);
 570         struct iscsi_session *sess;
 571         struct iscsi_conn *conn;
 572         struct se_session *se_sess;
 573         ssize_t rb = 0;
 574         u32 max_cmd_sn;
 575
 576         spin_lock_bh(&se_nacl->nacl_sess_lock);
 577         se_sess = se_nacl->nacl_sess;
 578         if (!se_sess) {
 579                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 580                         " Endpoint: %s\n", se_nacl->initiatorname);
 581         } else {
 582                 sess = se_sess->fabric_sess_ptr;
 583
 584                 rb += sprintf(page+rb, "InitiatorName: %s\n",
 585                         sess->sess_ops->InitiatorName);
 586                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 587                         sess->sess_ops->InitiatorAlias);
 588
 589                 rb += sprintf(page+rb,
 590                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
 591                               sess->sid, sess->isid, sess->tsih);
 592                 rb += sprintf(page+rb, "SessionType: %s\n",
 593                                 (sess->sess_ops->SessionType) ?
 594                                 "Discovery" : "Normal");
 595                 rb += sprintf(page+rb, "Session State: ");
 596                 switch (sess->session_state) {
 597                 case TARG_SESS_STATE_FREE:
 598                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 599                         break;
 600                 case TARG_SESS_STATE_ACTIVE:
 601                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 602                         break;
 603                 case TARG_SESS_STATE_LOGGED_IN:
 604                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 605                         break;
 606                 case TARG_SESS_STATE_FAILED:
 607                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 608                         break;
 609                 case TARG_SESS_STATE_IN_CONTINUE:
 610                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 611                         break;
 612                 default:
 613                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 614                                         " State!\n");
 615                         break;
 616                 }
 617
 618                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 619                                 " Values]-----------------------\n");
 620                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 621                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 622                 max_cmd_sn = (u32) atomic_read(&sess->max_cmd_sn);
 623                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 624                                 "   0x%08x   0x%08x\n",
 625                         sess->cmdsn_window,
 626                         (max_cmd_sn - sess->exp_cmd_sn) + 1,
 627                         sess->exp_cmd_sn, max_cmd_sn,
 628                         sess->init_task_tag, sess->targ_xfer_tag);
 629                 rb += sprintf(page+rb, "----------------------[iSCSI"
 630                                 " Connections]-------------------------\n");
 631
 632                 spin_lock(&sess->conn_lock);
 633                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 634                         rb += sprintf(page+rb, "CID: %hu  Connection"
 635                                         " State: ", conn->cid);
 636                         switch (conn->conn_state) {
 637                         case TARG_CONN_STATE_FREE:
 638                                 rb += sprintf(page+rb,
 639                                         "TARG_CONN_STATE_FREE\n");
 640                                 break;
 641                         case TARG_CONN_STATE_XPT_UP:
 642                                 rb += sprintf(page+rb,
 643                                         "TARG_CONN_STATE_XPT_UP\n");
 644                                 break;
 645                         case TARG_CONN_STATE_IN_LOGIN:
 646                                 rb += sprintf(page+rb,
 647                                         "TARG_CONN_STATE_IN_LOGIN\n");
 648                                 break;
 649                         case TARG_CONN_STATE_LOGGED_IN:
 650                                 rb += sprintf(page+rb,
 651                                         "TARG_CONN_STATE_LOGGED_IN\n");
 652                                 break;
 653                         case TARG_CONN_STATE_IN_LOGOUT:
 654                                 rb += sprintf(page+rb,
 655                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 656                                 break;
 657                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 658                                 rb += sprintf(page+rb,
 659                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 660                                 break;
 661                         case TARG_CONN_STATE_CLEANUP_WAIT:
 662                                 rb += sprintf(page+rb,
 663                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 664                                 break;
 665                         default:
 666                                 rb += sprintf(page+rb,
 667                                         "ERROR: Unknown Connection State!\n");
 668                                 break;
 669                         }
 670
 671                         rb += sprintf(page+rb, "   Address %pISc %s", &conn->login_sockaddr,
 672                                 (conn->network_transport == ISCSI_TCP) ?
 673                                 "TCP" : "SCTP");
 674                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 675                                 conn->stat_sn);
 676                 }
 677                 spin_unlock(&sess->conn_lock);
 678         }
 679         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 680
 681         return rb;
 682 }
 683
 684 static ssize_t lio_target_nacl_cmdsn_depth_show(struct config_item *item,
 685                 char *page)
 686 {
 687         return sprintf(page, "%u\n", acl_to_nacl(item)->queue_depth);
 688 }
 689
 690 static ssize_t lio_target_nacl_cmdsn_depth_store(struct config_item *item,
 691                 const char *page, size_t count)
 692 {
 693         struct se_node_acl *se_nacl = acl_to_nacl(item);
 694         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 695         struct iscsi_portal_group *tpg = container_of(se_tpg,
 696                         struct iscsi_portal_group, tpg_se_tpg);
 697         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 698         u32 cmdsn_depth = 0;
 699         int ret;
 700
 701         ret = kstrtou32(page, 0, &cmdsn_depth);
 702         if (ret)
 703                 return ret;
 704         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 705                 pr_err("Passed cmdsn_depth: %u exceeds"
 706                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 707                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 708                 return -EINVAL;
 709         }
 710         acl_ci = &se_nacl->acl_group.cg_item;
 711         if (!acl_ci) {
 712                 pr_err("Unable to locatel acl_ci\n");
 713                 return -EINVAL;
 714         }
 715         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 716         if (!tpg_ci) {
 717                 pr_err("Unable to locate tpg_ci\n");
 718                 return -EINVAL;
 719         }
 720         wwn_ci = &tpg_ci->ci_group->cg_item;
 721         if (!wwn_ci) {
 722                 pr_err("Unable to locate config_item wwn_ci\n");
 723                 return -EINVAL;
 724         }
 725
 726         if (iscsit_get_tpg(tpg) < 0)
 727                 return -EINVAL;
 728         /*
 729          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 730          */
 731         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 732                                 config_item_name(acl_ci), cmdsn_depth, 1);
 733
 734         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 735                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 736                 config_item_name(tpg_ci), cmdsn_depth,
 737                 config_item_name(acl_ci));
 738
 739         iscsit_put_tpg(tpg);
 740         return (!ret) ? count : (ssize_t)ret;
 741 }
 742
 743 static ssize_t lio_target_nacl_tag_show(struct config_item *item, char *page)
 744 {
 745         return snprintf(page, PAGE_SIZE, "%s", acl_to_nacl(item)->acl_tag);
 746 }
 747
 748 static ssize_t lio_target_nacl_tag_store(struct config_item *item,
 749                 const char *page, size_t count)
 750 {
 751         struct se_node_acl *se_nacl = acl_to_nacl(item);
 752         int ret;
 753
 754         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 755
 756         if (ret < 0)
 757                 return ret;
 758         return count;
 759 }
 760
 761 CONFIGFS_ATTR_RO(lio_target_nacl_, info);
 762 CONFIGFS_ATTR(lio_target_nacl_, cmdsn_depth);
 763 CONFIGFS_ATTR(lio_target_nacl_, tag);
 764
 765 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 766         &lio_target_nacl_attr_info,
 767         &lio_target_nacl_attr_cmdsn_depth,
 768         &lio_target_nacl_attr_tag,
 769         NULL,
 770 };
 771
 772 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
 773                 const char *name)
 774 {
 775         struct iscsi_node_acl *acl =
 776                 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 777         struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
 778
 779         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 780                                 GFP_KERNEL);
 781         if (!stats_cg->default_groups) {
 782                 pr_err("Unable to allocate memory for"
 783                                 " stats_cg->default_groups\n");
 784                 return -ENOMEM;
 785         }
 786
 787         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 788         stats_cg->default_groups[1] = NULL;
 789         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 790                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 791
 792         return 0;
 793 }
 794
 795 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
 796 {
 797         struct iscsi_node_acl *acl = container_of(se_nacl,
 798                         struct iscsi_node_acl, se_node_acl);
 799         struct config_item *df_item;
 800         struct config_group *stats_cg;
 801         int i;
 802
 803         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 804         for (i = 0; stats_cg->default_groups[i]; i++) {
 805                 df_item = &stats_cg->default_groups[i]->cg_item;
 806                 stats_cg->default_groups[i] = NULL;
 807                 config_item_put(df_item);
 808         }
 809         kfree(stats_cg->default_groups);
 810 }
 811
 812 /* End items for lio_target_acl_cit */
 813
 814 /* Start items for lio_target_tpg_attrib_cit */
 815
 816 #define DEF_TPG_ATTRIB(name)                                            \
 817                                                                         \
 818 static ssize_t iscsi_tpg_attrib_##name##_show(struct config_item *item, \
 819                 char *page)                                             \
 820 {                                                                       \
 821         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 822         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 823                         struct iscsi_portal_group, tpg_se_tpg); \
 824         ssize_t rb;                                                     \
 825                                                                         \
 826         if (iscsit_get_tpg(tpg) < 0)                                    \
 827                 return -EINVAL;                                         \
 828                                                                         \
 829         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 830         iscsit_put_tpg(tpg);                                            \
 831         return rb;                                                      \
 832 }                                                                       \
 833                                                                         \
 834 static ssize_t iscsi_tpg_attrib_##name##_store(struct config_item *item,\
 835                 const char *page, size_t count)                         \
 836 {                                                                       \
 837         struct se_portal_group *se_tpg = attrib_to_tpg(item);           \
 838         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 839                         struct iscsi_portal_group, tpg_se_tpg); \
 840         u32 val;                                                        \
 841         int ret;                                                        \
 842                                                                         \
 843         if (iscsit_get_tpg(tpg) < 0)                                    \
 844                 return -EINVAL;                                         \
 845                                                                         \
 846         ret = kstrtou32(page, 0, &val);                                 \
 847         if (ret)                                                        \
 848                 goto out;                                               \
 849         ret = iscsit_ta_##name(tpg, val);                               \
 850         if (ret < 0)                                                    \
 851                 goto out;                                               \
 852                                                                         \
 853         iscsit_put_tpg(tpg);                                            \
 854         return count;                                                   \
 855 out:                                                                    \
 856         iscsit_put_tpg(tpg);                                            \
 857         return ret;                                                     \
 858 }                                                                       \
 859 CONFIGFS_ATTR(iscsi_tpg_attrib_, name)
 860
 861 DEF_TPG_ATTRIB(authentication);
 862 DEF_TPG_ATTRIB(login_timeout);
 863 DEF_TPG_ATTRIB(netif_timeout);
 864 DEF_TPG_ATTRIB(generate_node_acls);
 865 DEF_TPG_ATTRIB(default_cmdsn_depth);
 866 DEF_TPG_ATTRIB(cache_dynamic_acls);
 867 DEF_TPG_ATTRIB(demo_mode_write_protect);
 868 DEF_TPG_ATTRIB(prod_mode_write_protect);
 869 DEF_TPG_ATTRIB(demo_mode_discovery);
 870 DEF_TPG_ATTRIB(default_erl);
 871 DEF_TPG_ATTRIB(t10_pi);
 872 DEF_TPG_ATTRIB(fabric_prot_type);
 873 DEF_TPG_ATTRIB(tpg_enabled_sendtargets);
 874
 875 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
 876         &iscsi_tpg_attrib_attr_authentication,
 877         &iscsi_tpg_attrib_attr_login_timeout,
 878         &iscsi_tpg_attrib_attr_netif_timeout,
 879         &iscsi_tpg_attrib_attr_generate_node_acls,
 880         &iscsi_tpg_attrib_attr_default_cmdsn_depth,
 881         &iscsi_tpg_attrib_attr_cache_dynamic_acls,
 882         &iscsi_tpg_attrib_attr_demo_mode_write_protect,
 883         &iscsi_tpg_attrib_attr_prod_mode_write_protect,
 884         &iscsi_tpg_attrib_attr_demo_mode_discovery,
 885         &iscsi_tpg_attrib_attr_default_erl,
 886         &iscsi_tpg_attrib_attr_t10_pi,
 887         &iscsi_tpg_attrib_attr_fabric_prot_type,
 888         &iscsi_tpg_attrib_attr_tpg_enabled_sendtargets,
 889         NULL,
 890 };
 891
 892 /* End items for lio_target_tpg_attrib_cit */
 893
 894 /* Start items for lio_target_tpg_auth_cit */
 895
 896 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
 897 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
 898                 char *page)                                                     \
 899 {                                                                               \
 900         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
 901                                 struct iscsi_portal_group, tpg_se_tpg);         \
 902         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 903                                                                                 \
 904         if (!capable(CAP_SYS_ADMIN))                                            \
 905                 return -EPERM;                                                  \
 906                                                                                 \
 907         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
 908 }                                                                               \
 909                                                                                 \
 910 static ssize_t __iscsi_##prefix##_##name##_store(struct se_portal_group *se_tpg,\
 911                 const char *page, size_t count)                                 \
 912 {                                                                               \
 913         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
 914                                 struct iscsi_portal_group, tpg_se_tpg);         \
 915         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 916                                                                                 \
 917         if (!capable(CAP_SYS_ADMIN))                                            \
 918                 return -EPERM;                                                  \
 919                                                                                 \
 920         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
 921         if (!(strncmp("NULL", auth->name, 4)))                                  \
 922                 auth->naf_flags &= ~flags;                                      \
 923         else                                                                    \
 924                 auth->naf_flags |= flags;                                       \
 925                                                                                 \
 926         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
 927             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
 928                 auth->authenticate_target = 1;                                  \
 929         else                                                                    \
 930                 auth->authenticate_target = 0;                                  \
 931                                                                                 \
 932         return count;                                                           \
 933 }
 934
 935 #define DEF_TPG_AUTH_STR(name, flags)                                           \
 936         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
 937 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
 938                 char *page)                                                     \
 939 {                                                                               \
 940         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
 941 }                                                                               \
 942                                                                                 \
 943 static ssize_t iscsi_tpg_auth_##name##_store(struct config_item *item,          \
 944                 const char *page, size_t count)                                 \
 945 {                                                                               \
 946         return __iscsi_tpg_auth_##name##_store(auth_to_tpg(item), page, count); \
 947 }                                                                               \
 948                                                                                 \
 949 CONFIGFS_ATTR(iscsi_tpg_auth_, name);
 950
 951
 952 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
 953 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
 954 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 955 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 956
 957 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
 958 static ssize_t __iscsi_##prefix##_##name##_show(struct se_portal_group *se_tpg, \
 959                 char *page)                                                             \
 960 {                                                                               \
 961         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
 962                                 struct iscsi_portal_group, tpg_se_tpg);         \
 963         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
 964                                                                                 \
 965         if (!capable(CAP_SYS_ADMIN))                                            \
 966                 return -EPERM;                                                  \
 967                                                                                 \
 968         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
 969 }
 970
 971 #define DEF_TPG_AUTH_INT(name)                                                  \
 972         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
 973 static ssize_t iscsi_tpg_auth_##name##_show(struct config_item *item,           \
 974                 char *page) \
 975 {                                                                               \
 976         return __iscsi_tpg_auth_##name##_show(auth_to_tpg(item), page);         \
 977 }                                                                               \
 978 CONFIGFS_ATTR_RO(iscsi_tpg_auth_, name);
 979
 980 DEF_TPG_AUTH_INT(authenticate_target);
 981
 982 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
 983         &iscsi_tpg_auth_attr_userid,
 984         &iscsi_tpg_auth_attr_password,
 985         &iscsi_tpg_auth_attr_authenticate_target,
 986         &iscsi_tpg_auth_attr_userid_mutual,
 987         &iscsi_tpg_auth_attr_password_mutual,
 988         NULL,
 989 };
 990
 991 /* End items for lio_target_tpg_auth_cit */
 992
 993 /* Start items for lio_target_tpg_param_cit */
 994
 995 #define DEF_TPG_PARAM(name)                                             \
 996 static ssize_t iscsi_tpg_param_##name##_show(struct config_item *item,  \
 997                 char *page)                                             \
 998 {                                                                       \
 999         struct se_portal_group *se_tpg = param_to_tpg(item);            \
1000         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1001                         struct iscsi_portal_group, tpg_se_tpg);         \
1002         struct iscsi_param *param;                                      \
1003         ssize_t rb;                                                     \
1004                                                                         \
1005         if (iscsit_get_tpg(tpg) < 0)                                    \
1006                 return -EINVAL;                                         \
1007                                                                         \
1008         param = iscsi_find_param_from_key(__stringify(name),            \
1009                                 tpg->param_list);                       \
1010         if (!param) {                                                   \
1011                 iscsit_put_tpg(tpg);                                    \
1012                 return -EINVAL;                                         \
1013         }                                                               \
1014         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1015                                                                         \
1016         iscsit_put_tpg(tpg);                                            \
1017         return rb;                                                      \
1018 }                                                                       \
1019 static ssize_t iscsi_tpg_param_##name##_store(struct config_item *item, \
1020                 const char *page, size_t count)                         \
1021 {                                                                       \
1022         struct se_portal_group *se_tpg = param_to_tpg(item);            \
1023         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1024                         struct iscsi_portal_group, tpg_se_tpg);         \
1025         char *buf;                                                      \
1026         int ret, len;                                                   \
1027                                                                         \
1028         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1029         if (!buf)                                                       \
1030                 return -ENOMEM;                                         \
1031         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1032         if (isspace(buf[len-1]))                                        \
1033                 buf[len-1] = '\0'; /* Kill newline */                   \
1034                                                                         \
1035         if (iscsit_get_tpg(tpg) < 0) {                                  \
1036                 kfree(buf);                                             \
1037                 return -EINVAL;                                         \
1038         }                                                               \
1039                                                                         \
1040         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1041         if (ret < 0)                                                    \
1042                 goto out;                                               \
1043                                                                         \
1044         kfree(buf);                                                     \
1045         iscsit_put_tpg(tpg);                                            \
1046         return count;                                                   \
1047 out:                                                                    \
1048         kfree(buf);                                                     \
1049         iscsit_put_tpg(tpg);                                            \
1050         return -EINVAL;                                                 \
1051 }                                                                       \
1052 CONFIGFS_ATTR(iscsi_tpg_param_, name)
1053
1054 DEF_TPG_PARAM(AuthMethod);
1055 DEF_TPG_PARAM(HeaderDigest);
1056 DEF_TPG_PARAM(DataDigest);
1057 DEF_TPG_PARAM(MaxConnections);
1058 DEF_TPG_PARAM(TargetAlias);
1059 DEF_TPG_PARAM(InitialR2T);
1060 DEF_TPG_PARAM(ImmediateData);
1061 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1062 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1063 DEF_TPG_PARAM(MaxBurstLength);
1064 DEF_TPG_PARAM(FirstBurstLength);
1065 DEF_TPG_PARAM(DefaultTime2Wait);
1066 DEF_TPG_PARAM(DefaultTime2Retain);
1067 DEF_TPG_PARAM(MaxOutstandingR2T);
1068 DEF_TPG_PARAM(DataPDUInOrder);
1069 DEF_TPG_PARAM(DataSequenceInOrder);
1070 DEF_TPG_PARAM(ErrorRecoveryLevel);
1071 DEF_TPG_PARAM(IFMarker);
1072 DEF_TPG_PARAM(OFMarker);
1073 DEF_TPG_PARAM(IFMarkInt);
1074 DEF_TPG_PARAM(OFMarkInt);
1075
1076 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1077         &iscsi_tpg_param_attr_AuthMethod,
1078         &iscsi_tpg_param_attr_HeaderDigest,
1079         &iscsi_tpg_param_attr_DataDigest,
1080         &iscsi_tpg_param_attr_MaxConnections,
1081         &iscsi_tpg_param_attr_TargetAlias,
1082         &iscsi_tpg_param_attr_InitialR2T,
1083         &iscsi_tpg_param_attr_ImmediateData,
1084         &iscsi_tpg_param_attr_MaxRecvDataSegmentLength,
1085         &iscsi_tpg_param_attr_MaxXmitDataSegmentLength,
1086         &iscsi_tpg_param_attr_MaxBurstLength,
1087         &iscsi_tpg_param_attr_FirstBurstLength,
1088         &iscsi_tpg_param_attr_DefaultTime2Wait,
1089         &iscsi_tpg_param_attr_DefaultTime2Retain,
1090         &iscsi_tpg_param_attr_MaxOutstandingR2T,
1091         &iscsi_tpg_param_attr_DataPDUInOrder,
1092         &iscsi_tpg_param_attr_DataSequenceInOrder,
1093         &iscsi_tpg_param_attr_ErrorRecoveryLevel,
1094         &iscsi_tpg_param_attr_IFMarker,
1095         &iscsi_tpg_param_attr_OFMarker,
1096         &iscsi_tpg_param_attr_IFMarkInt,
1097         &iscsi_tpg_param_attr_OFMarkInt,
1098         NULL,
1099 };
1100
1101 /* End items for lio_target_tpg_param_cit */
1102
1103 /* Start items for lio_target_tpg_cit */
1104
1105 static ssize_t lio_target_tpg_enable_show(struct config_item *item, char *page)
1106 {
1107         struct se_portal_group *se_tpg = to_tpg(item);
1108         struct iscsi_portal_group *tpg = container_of(se_tpg,
1109                         struct iscsi_portal_group, tpg_se_tpg);
1110         ssize_t len;
1111
1112         spin_lock(&tpg->tpg_state_lock);
1113         len = sprintf(page, "%d\n",
1114                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1115         spin_unlock(&tpg->tpg_state_lock);
1116
1117         return len;
1118 }
1119
1120 static ssize_t lio_target_tpg_enable_store(struct config_item *item,
1121                 const char *page, size_t count)
1122 {
1123         struct se_portal_group *se_tpg = to_tpg(item);
1124         struct iscsi_portal_group *tpg = container_of(se_tpg,
1125                         struct iscsi_portal_group, tpg_se_tpg);
1126         u32 op;
1127         int ret;
1128
1129         ret = kstrtou32(page, 0, &op);
1130         if (ret)
1131                 return ret;
1132         if ((op != 1) && (op != 0)) {
1133                 pr_err("Illegal value for tpg_enable: %u\n", op);
1134                 return -EINVAL;
1135         }
1136
1137         ret = iscsit_get_tpg(tpg);
1138         if (ret < 0)
1139                 return -EINVAL;
1140
1141         if (op) {
1142                 ret = iscsit_tpg_enable_portal_group(tpg);
1143                 if (ret < 0)
1144                         goto out;
1145         } else {
1146                 /*
1147                  * iscsit_tpg_disable_portal_group() assumes force=1
1148                  */
1149                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1150                 if (ret < 0)
1151                         goto out;
1152         }
1153
1154         iscsit_put_tpg(tpg);
1155         return count;
1156 out:
1157         iscsit_put_tpg(tpg);
1158         return -EINVAL;
1159 }
1160
1161
1162 static ssize_t lio_target_tpg_dynamic_sessions_show(struct config_item *item,
1163                 char *page)
1164 {
1165         return target_show_dynamic_sessions(to_tpg(item), page);
1166 }
1167
1168 CONFIGFS_ATTR(lio_target_tpg_, enable);
1169 CONFIGFS_ATTR_RO(lio_target_tpg_, dynamic_sessions);
1170
1171 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1172         &lio_target_tpg_attr_enable,
1173         &lio_target_tpg_attr_dynamic_sessions,
1174         NULL,
1175 };
1176
1177 /* End items for lio_target_tpg_cit */
1178
1179 /* Start items for lio_target_tiqn_cit */
1180
1181 static struct se_portal_group *lio_target_tiqn_addtpg(
1182         struct se_wwn *wwn,
1183         struct config_group *group,
1184         const char *name)
1185 {
1186         struct iscsi_portal_group *tpg;
1187         struct iscsi_tiqn *tiqn;
1188         char *tpgt_str;
1189         int ret;
1190         u16 tpgt;
1191
1192         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1193         /*
1194          * Only tpgt_# directory groups can be created below
1195          * target/iscsi/iqn.superturodiskarry/
1196          */
1197         tpgt_str = strstr(name, "tpgt_");
1198         if (!tpgt_str) {
1199                 pr_err("Unable to locate \"tpgt_#\" directory"
1200                                 " group\n");
1201                 return NULL;
1202         }
1203         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1204         ret = kstrtou16(tpgt_str, 0, &tpgt);
1205         if (ret)
1206                 return NULL;
1207
1208         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1209         if (!tpg)
1210                 return NULL;
1211
1212         ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1213         if (ret < 0)
1214                 return NULL;
1215
1216         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1217         if (ret != 0)
1218                 goto out;
1219
1220         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1221         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1222                         name);
1223         return &tpg->tpg_se_tpg;
1224 out:
1225         core_tpg_deregister(&tpg->tpg_se_tpg);
1226         kfree(tpg);
1227         return NULL;
1228 }
1229
1230 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1231 {
1232         struct iscsi_portal_group *tpg;
1233         struct iscsi_tiqn *tiqn;
1234
1235         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1236         tiqn = tpg->tpg_tiqn;
1237         /*
1238          * iscsit_tpg_del_portal_group() assumes force=1
1239          */
1240         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1241         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1242 }
1243
1244 /* End items for lio_target_tiqn_cit */
1245
1246 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1247
1248 static ssize_t lio_target_wwn_lio_version_show(struct config_item *item,
1249                 char *page)
1250 {
1251         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1252 }
1253
1254 CONFIGFS_ATTR_RO(lio_target_wwn_, lio_version);
1255
1256 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1257         &lio_target_wwn_attr_lio_version,
1258         NULL,
1259 };
1260
1261 static struct se_wwn *lio_target_call_coreaddtiqn(
1262         struct target_fabric_configfs *tf,
1263         struct config_group *group,
1264         const char *name)
1265 {
1266         struct config_group *stats_cg;
1267         struct iscsi_tiqn *tiqn;
1268
1269         tiqn = iscsit_add_tiqn((unsigned char *)name);
1270         if (IS_ERR(tiqn))
1271                 return ERR_CAST(tiqn);
1272         /*
1273          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1274          */
1275         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1276
1277         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1278                                 GFP_KERNEL);
1279         if (!stats_cg->default_groups) {
1280                 pr_err("Unable to allocate memory for"
1281                                 " stats_cg->default_groups\n");
1282                 iscsit_del_tiqn(tiqn);
1283                 return ERR_PTR(-ENOMEM);
1284         }
1285
1286         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1287         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1288         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1289         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1290         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1291         stats_cg->default_groups[5] = NULL;
1292         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1293                         "iscsi_instance", &iscsi_stat_instance_cit);
1294         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1295                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1296         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1297                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1298         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1299                         "iscsi_login_stats", &iscsi_stat_login_cit);
1300         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1301                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1302
1303         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1304         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1305                         " %s\n", name);
1306         return &tiqn->tiqn_wwn;
1307 }
1308
1309 static void lio_target_call_coredeltiqn(
1310         struct se_wwn *wwn)
1311 {
1312         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1313         struct config_item *df_item;
1314         struct config_group *stats_cg;
1315         int i;
1316
1317         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1318         for (i = 0; stats_cg->default_groups[i]; i++) {
1319                 df_item = &stats_cg->default_groups[i]->cg_item;
1320                 stats_cg->default_groups[i] = NULL;
1321                 config_item_put(df_item);
1322         }
1323         kfree(stats_cg->default_groups);
1324
1325         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1326                         tiqn->tiqn);
1327         iscsit_del_tiqn(tiqn);
1328 }
1329
1330 /* End LIO-Target TIQN struct contig_lio_target_cit */
1331
1332 /* Start lio_target_discovery_auth_cit */
1333
1334 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1335         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1336 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1337 {                                                                       \
1338         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl,\
1339                 page);                                                  \
1340 }                                                                       \
1341 static ssize_t iscsi_disc_##name##_store(struct config_item *item,      \
1342                 const char *page, size_t count)                         \
1343 {                                                                       \
1344         return __iscsi_disc_##name##_store(&iscsit_global->discovery_acl,       \
1345                 page, count);                                           \
1346                                                                         \
1347 }                                                                       \
1348 CONFIGFS_ATTR(iscsi_disc_, name)
1349
1350 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1351 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1352 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1353 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1354
1355 #define DEF_DISC_AUTH_INT(name)                                         \
1356         __DEF_NACL_AUTH_INT(disc, name)                                 \
1357 static ssize_t iscsi_disc_##name##_show(struct config_item *item, char *page) \
1358 {                                                                       \
1359         return __iscsi_disc_##name##_show(&iscsit_global->discovery_acl, \
1360                         page);                                          \
1361 }                                                                       \
1362 CONFIGFS_ATTR_RO(iscsi_disc_, name)
1363
1364 DEF_DISC_AUTH_INT(authenticate_target);
1365
1366
1367 static ssize_t iscsi_disc_enforce_discovery_auth_show(struct config_item *item,
1368                 char *page)
1369 {
1370         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1371
1372         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1373 }
1374
1375 static ssize_t iscsi_disc_enforce_discovery_auth_store(struct config_item *item,
1376                 const char *page, size_t count)
1377 {
1378         struct iscsi_param *param;
1379         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1380         u32 op;
1381         int err;
1382
1383         err = kstrtou32(page, 0, &op);
1384         if (err)
1385                 return -EINVAL;
1386         if ((op != 1) && (op != 0)) {
1387                 pr_err("Illegal value for enforce_discovery_auth:"
1388                                 " %u\n", op);
1389                 return -EINVAL;
1390         }
1391
1392         if (!discovery_tpg) {
1393                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1394                 return -EINVAL;
1395         }
1396
1397         param = iscsi_find_param_from_key(AUTHMETHOD,
1398                                 discovery_tpg->param_list);
1399         if (!param)
1400                 return -EINVAL;
1401
1402         if (op) {
1403                 /*
1404                  * Reset the AuthMethod key to CHAP.
1405                  */
1406                 if (iscsi_update_param_value(param, CHAP) < 0)
1407                         return -EINVAL;
1408
1409                 discovery_tpg->tpg_attrib.authentication = 1;
1410                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1411                 pr_debug("LIO-CORE[0] Successfully enabled"
1412                         " authentication enforcement for iSCSI"
1413                         " Discovery TPG\n");
1414         } else {
1415                 /*
1416                  * Reset the AuthMethod key to CHAP,None
1417                  */
1418                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1419                         return -EINVAL;
1420
1421                 discovery_tpg->tpg_attrib.authentication = 0;
1422                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1423                 pr_debug("LIO-CORE[0] Successfully disabled"
1424                         " authentication enforcement for iSCSI"
1425                         " Discovery TPG\n");
1426         }
1427
1428         return count;
1429 }
1430
1431 CONFIGFS_ATTR(iscsi_disc_, enforce_discovery_auth);
1432
1433 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1434         &iscsi_disc_attr_userid,
1435         &iscsi_disc_attr_password,
1436         &iscsi_disc_attr_authenticate_target,
1437         &iscsi_disc_attr_userid_mutual,
1438         &iscsi_disc_attr_password_mutual,
1439         &iscsi_disc_attr_enforce_discovery_auth,
1440         NULL,
1441 };
1442
1443 /* End lio_target_discovery_auth_cit */
1444
1445 /* Start functions for target_core_fabric_ops */
1446
1447 static char *iscsi_get_fabric_name(void)
1448 {
1449         return "iSCSI";
1450 }
1451
1452 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1453 {
1454         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1455
1456         return cmd->i_state;
1457 }
1458
1459 static u32 lio_sess_get_index(struct se_session *se_sess)
1460 {
1461         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1462
1463         return sess->session_index;
1464 }
1465
1466 static u32 lio_sess_get_initiator_sid(
1467         struct se_session *se_sess,
1468         unsigned char *buf,
1469         u32 size)
1470 {
1471         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1472         /*
1473          * iSCSI Initiator Session Identifier from RFC-3720.
1474          */
1475         return snprintf(buf, size, "%6phN", sess->isid);
1476 }
1477
1478 static int lio_queue_data_in(struct se_cmd *se_cmd)
1479 {
1480         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1481
1482         cmd->i_state = ISTATE_SEND_DATAIN;
1483         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1484
1485         return 0;
1486 }
1487
1488 static int lio_write_pending(struct se_cmd *se_cmd)
1489 {
1490         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1491         struct iscsi_conn *conn = cmd->conn;
1492
1493         if (!cmd->immediate_data && !cmd->unsolicited_data)
1494                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1495
1496         return 0;
1497 }
1498
1499 static int lio_write_pending_status(struct se_cmd *se_cmd)
1500 {
1501         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1502         int ret;
1503
1504         spin_lock_bh(&cmd->istate_lock);
1505         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1506         spin_unlock_bh(&cmd->istate_lock);
1507
1508         return ret;
1509 }
1510
1511 static int lio_queue_status(struct se_cmd *se_cmd)
1512 {
1513         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1514
1515         cmd->i_state = ISTATE_SEND_STATUS;
1516
1517         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1518                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1519                 return 0;
1520         }
1521         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1522
1523         return 0;
1524 }
1525
1526 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1527 {
1528         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1529
1530         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1531         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1532 }
1533
1534 static void lio_aborted_task(struct se_cmd *se_cmd)
1535 {
1536         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1537
1538         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1539 }
1540
1541 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1542 {
1543         return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1544 }
1545
1546 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1547 {
1548         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1549 }
1550
1551 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1552 {
1553         return iscsi_tpg(se_tpg)->tpgt;
1554 }
1555
1556 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1557 {
1558         return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1559 }
1560
1561 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1562 {
1563         return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1564 }
1565
1566 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1567 {
1568         return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1569 }
1570
1571 static int lio_tpg_check_demo_mode_write_protect(
1572         struct se_portal_group *se_tpg)
1573 {
1574         return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1575 }
1576
1577 static int lio_tpg_check_prod_mode_write_protect(
1578         struct se_portal_group *se_tpg)
1579 {
1580         return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1581 }
1582
1583 static int lio_tpg_check_prot_fabric_only(
1584         struct se_portal_group *se_tpg)
1585 {
1586         /*
1587          * Only report fabric_prot_type if t10_pi has also been enabled
1588          * for incoming ib_isert sessions.
1589          */
1590         if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1591                 return 0;
1592         return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1593 }
1594
1595 /*
1596  * Called with spin_lock_irq(struct se_portal_group->session_lock) held
1597  * or not held.
1598  *
1599  * Also, this function calls iscsit_inc_session_usage_count() on the
1600  * struct iscsi_session in question.
1601  */
1602 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1603 {
1604         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1605         struct se_portal_group *se_tpg = se_sess->se_tpg;
1606         bool local_lock = false;
1607
1608         if (!spin_is_locked(&se_tpg->session_lock)) {
1609                 spin_lock_irq(&se_tpg->session_lock);
1610                 local_lock = true;
1611         }
1612
1613         spin_lock(&sess->conn_lock);
1614         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1615             atomic_read(&sess->session_logout) ||
1616             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1617                 spin_unlock(&sess->conn_lock);
1618                 if (local_lock)
1619                         spin_unlock_irq(&sess->conn_lock);
1620                 return 0;
1621         }
1622         atomic_set(&sess->session_reinstatement, 1);
1623         spin_unlock(&sess->conn_lock);
1624
1625         iscsit_stop_time2retain_timer(sess);
1626         spin_unlock_irq(&se_tpg->session_lock);
1627
1628         iscsit_stop_session(sess, 1, 1);
1629         if (!local_lock)
1630                 spin_lock_irq(&se_tpg->session_lock);
1631
1632         return 1;
1633 }
1634
1635 /*
1636  * Calls iscsit_dec_session_usage_count() as inverse of
1637  * lio_tpg_shutdown_session()
1638  */
1639 static void lio_tpg_close_session(struct se_session *se_sess)
1640 {
1641         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1642         /*
1643          * If the iSCSI Session for the iSCSI Initiator Node exists,
1644          * forcefully shutdown the iSCSI NEXUS.
1645          */
1646         iscsit_close_session(sess);
1647 }
1648
1649 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1650 {
1651         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1652 }
1653
1654 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1655 {
1656         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1657                                 se_node_acl);
1658         struct se_portal_group *se_tpg = se_acl->se_tpg;
1659         struct iscsi_portal_group *tpg = container_of(se_tpg,
1660                                 struct iscsi_portal_group, tpg_se_tpg);
1661
1662         acl->node_attrib.nacl = acl;
1663         iscsit_set_default_node_attribues(acl, tpg);
1664 }
1665
1666 static int lio_check_stop_free(struct se_cmd *se_cmd)
1667 {
1668         return target_put_sess_cmd(se_cmd);
1669 }
1670
1671 static void lio_release_cmd(struct se_cmd *se_cmd)
1672 {
1673         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1674
1675         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1676         iscsit_release_cmd(cmd);
1677 }
1678
1679 const struct target_core_fabric_ops iscsi_ops = {
1680         .module                         = THIS_MODULE,
1681         .name                           = "iscsi",
1682         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1683         .get_fabric_name                = iscsi_get_fabric_name,
1684         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1685         .tpg_get_tag                    = lio_tpg_get_tag,
1686         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1687         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1688         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1689         .tpg_check_demo_mode_write_protect =
1690                         lio_tpg_check_demo_mode_write_protect,
1691         .tpg_check_prod_mode_write_protect =
1692                         lio_tpg_check_prod_mode_write_protect,
1693         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1694         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1695         .check_stop_free                = lio_check_stop_free,
1696         .release_cmd                    = lio_release_cmd,
1697         .shutdown_session               = lio_tpg_shutdown_session,
1698         .close_session                  = lio_tpg_close_session,
1699         .sess_get_index                 = lio_sess_get_index,
1700         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1701         .write_pending                  = lio_write_pending,
1702         .write_pending_status           = lio_write_pending_status,
1703         .set_default_node_attributes    = lio_set_default_node_attributes,
1704         .get_cmd_state                  = iscsi_get_cmd_state,
1705         .queue_data_in                  = lio_queue_data_in,
1706         .queue_status                   = lio_queue_status,
1707         .queue_tm_rsp                   = lio_queue_tm_rsp,
1708         .aborted_task                   = lio_aborted_task,
1709         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1710         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1711         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1712         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1713         .fabric_make_np                 = lio_target_call_addnptotpg,
1714         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1715         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1716         .fabric_cleanup_nodeacl         = lio_target_cleanup_nodeacl,
1717
1718         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1719         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1720         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1721         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1722         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1723         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1724         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1725         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1726         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1727         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1728         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1729 };