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  * \u00a9 Copyright 2007-2011 RisingTide Systems LLC.
   6  *
   7  * Licensed to the Linux Foundation under the General Public License (GPL) version 2.
   8  *
   9  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
  10  *
  11  * This program is free software; you can redistribute it and/or modify
  12  * it under the terms of the GNU General Public License as published by
  13  * the Free Software Foundation; either version 2 of the License, or
  14  * (at your option) any later version.
  15  *
  16  * This program is distributed in the hope that it will be useful,
  17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19  * GNU General Public License for more details.
  20  ****************************************************************************/
  21
  22 #include <linux/configfs.h>
  23 #include <linux/export.h>
  24 #include <target/target_core_base.h>
  25 #include <target/target_core_transport.h>
  26 #include <target/target_core_fabric_ops.h>
  27 #include <target/target_core_fabric_configfs.h>
  28 #include <target/target_core_fabric_lib.h>
  29 #include <target/target_core_device.h>
  30 #include <target/target_core_tpg.h>
  31 #include <target/target_core_configfs.h>
  32 #include <target/configfs_macros.h>
  33
  34 #include "iscsi_target_core.h"
  35 #include "iscsi_target_parameters.h"
  36 #include "iscsi_target_device.h"
  37 #include "iscsi_target_erl0.h"
  38 #include "iscsi_target_nodeattrib.h"
  39 #include "iscsi_target_tpg.h"
  40 #include "iscsi_target_util.h"
  41 #include "iscsi_target.h"
  42 #include "iscsi_target_stat.h"
  43 #include "iscsi_target_configfs.h"
  44
  45 struct target_fabric_configfs *lio_target_fabric_configfs;
  46
  47 struct lio_target_configfs_attribute {
  48         struct configfs_attribute attr;
  49         ssize_t (*show)(void *, char *);
  50         ssize_t (*store)(void *, const char *, size_t);
  51 };
  52
  53 struct iscsi_portal_group *lio_get_tpg_from_tpg_item(
  54         struct config_item *item,
  55         struct iscsi_tiqn **tiqn_out)
  56 {
  57         struct se_portal_group *se_tpg = container_of(to_config_group(item),
  58                                         struct se_portal_group, tpg_group);
  59         struct iscsi_portal_group *tpg =
  60                         (struct iscsi_portal_group *)se_tpg->se_tpg_fabric_ptr;
  61         int ret;
  62
  63         if (!tpg) {
  64                 pr_err("Unable to locate struct iscsi_portal_group "
  65                         "pointer\n");
  66                 return NULL;
  67         }
  68         ret = iscsit_get_tpg(tpg);
  69         if (ret < 0)
  70                 return NULL;
  71
  72         *tiqn_out = tpg->tpg_tiqn;
  73         return tpg;
  74 }
  75
  76 /* Start items for lio_target_portal_cit */
  77
  78 static ssize_t lio_target_np_show_sctp(
  79         struct se_tpg_np *se_tpg_np,
  80         char *page)
  81 {
  82         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  83                                 struct iscsi_tpg_np, se_tpg_np);
  84         struct iscsi_tpg_np *tpg_np_sctp;
  85         ssize_t rb;
  86
  87         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  88         if (tpg_np_sctp)
  89                 rb = sprintf(page, "1\n");
  90         else
  91                 rb = sprintf(page, "0\n");
  92
  93         return rb;
  94 }
  95
  96 static ssize_t lio_target_np_store_sctp(
  97         struct se_tpg_np *se_tpg_np,
  98         const char *page,
  99         size_t count)
 100 {
 101         struct iscsi_np *np;
 102         struct iscsi_portal_group *tpg;
 103         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 104                                 struct iscsi_tpg_np, se_tpg_np);
 105         struct iscsi_tpg_np *tpg_np_sctp = NULL;
 106         char *endptr;
 107         u32 op;
 108         int ret;
 109
 110         op = simple_strtoul(page, &endptr, 0);
 111         if ((op != 1) && (op != 0)) {
 112                 pr_err("Illegal value for tpg_enable: %u\n", op);
 113                 return -EINVAL;
 114         }
 115         np = tpg_np->tpg_np;
 116         if (!np) {
 117                 pr_err("Unable to locate struct iscsi_np from"
 118                                 " struct iscsi_tpg_np\n");
 119                 return -EINVAL;
 120         }
 121
 122         tpg = tpg_np->tpg;
 123         if (iscsit_get_tpg(tpg) < 0)
 124                 return -EINVAL;
 125
 126         if (op) {
 127                 /*
 128                  * Use existing np->np_sockaddr for SCTP network portal reference
 129                  */
 130                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 131                                         np->np_ip, tpg_np, ISCSI_SCTP_TCP);
 132                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 133                         goto out;
 134         } else {
 135                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 136                 if (!tpg_np_sctp)
 137                         goto out;
 138
 139                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 140                 if (ret < 0)
 141                         goto out;
 142         }
 143
 144         iscsit_put_tpg(tpg);
 145         return count;
 146 out:
 147         iscsit_put_tpg(tpg);
 148         return -EINVAL;
 149 }
 150
 151 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 152
 153 static struct configfs_attribute *lio_target_portal_attrs[] = {
 154         &lio_target_np_sctp.attr,
 155         NULL,
 156 };
 157
 158 /* Stop items for lio_target_portal_cit */
 159
 160 /* Start items for lio_target_np_cit */
 161
 162 #define MAX_PORTAL_LEN          256
 163
 164 struct se_tpg_np *lio_target_call_addnptotpg(
 165         struct se_portal_group *se_tpg,
 166         struct config_group *group,
 167         const char *name)
 168 {
 169         struct iscsi_portal_group *tpg;
 170         struct iscsi_tpg_np *tpg_np;
 171         char *str, *str2, *ip_str, *port_str;
 172         struct __kernel_sockaddr_storage sockaddr;
 173         struct sockaddr_in *sock_in;
 174         struct sockaddr_in6 *sock_in6;
 175         unsigned long port;
 176         int ret;
 177         char buf[MAX_PORTAL_LEN + 1];
 178
 179         if (strlen(name) > MAX_PORTAL_LEN) {
 180                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 181                         (int)strlen(name), MAX_PORTAL_LEN);
 182                 return ERR_PTR(-EOVERFLOW);
 183         }
 184         memset(buf, 0, MAX_PORTAL_LEN + 1);
 185         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 186
 187         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 188
 189         str = strstr(buf, "[");
 190         if (str) {
 191                 const char *end;
 192
 193                 str2 = strstr(str, "]");
 194                 if (!str2) {
 195                         pr_err("Unable to locate trailing \"]\""
 196                                 " in IPv6 iSCSI network portal address\n");
 197                         return ERR_PTR(-EINVAL);
 198                 }
 199                 str++; /* Skip over leading "[" */
 200                 *str2 = '\0'; /* Terminate the IPv6 address */
 201                 str2++; /* Skip over the "]" */
 202                 port_str = strstr(str2, ":");
 203                 if (!port_str) {
 204                         pr_err("Unable to locate \":port\""
 205                                 " in IPv6 iSCSI network portal address\n");
 206                         return ERR_PTR(-EINVAL);
 207                 }
 208                 *port_str = '\0'; /* Terminate string for IP */
 209                 port_str++; /* Skip over ":" */
 210
 211                 ret = strict_strtoul(port_str, 0, &port);
 212                 if (ret < 0) {
 213                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 214                         return ERR_PTR(ret);
 215                 }
 216                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 217                 sock_in6->sin6_family = AF_INET6;
 218                 sock_in6->sin6_port = htons((unsigned short)port);
 219                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 220                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 221                 if (ret <= 0) {
 222                         pr_err("in6_pton returned: %d\n", ret);
 223                         return ERR_PTR(-EINVAL);
 224                 }
 225         } else {
 226                 str = ip_str = &buf[0];
 227                 port_str = strstr(ip_str, ":");
 228                 if (!port_str) {
 229                         pr_err("Unable to locate \":port\""
 230                                 " in IPv4 iSCSI network portal address\n");
 231                         return ERR_PTR(-EINVAL);
 232                 }
 233                 *port_str = '\0'; /* Terminate string for IP */
 234                 port_str++; /* Skip over ":" */
 235
 236                 ret = strict_strtoul(port_str, 0, &port);
 237                 if (ret < 0) {
 238                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 239                         return ERR_PTR(ret);
 240                 }
 241                 sock_in = (struct sockaddr_in *)&sockaddr;
 242                 sock_in->sin_family = AF_INET;
 243                 sock_in->sin_port = htons((unsigned short)port);
 244                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 245         }
 246         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 247         ret = iscsit_get_tpg(tpg);
 248         if (ret < 0)
 249                 return ERR_PTR(-EINVAL);
 250
 251         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 252                 " PORTAL: %s\n",
 253                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 254                 tpg->tpgt, name);
 255         /*
 256          * Assume ISCSI_TCP by default.  Other network portals for other
 257          * iSCSI fabrics:
 258          *
 259          * Traditional iSCSI over SCTP (initial support)
 260          * iSER/TCP (TODO, hardware available)
 261          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 262          * iSER/IB (TODO, hardware available)
 263          *
 264          * can be enabled with atributes under
 265          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 266          *
 267          */
 268         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 269                                 ISCSI_TCP);
 270         if (IS_ERR(tpg_np)) {
 271                 iscsit_put_tpg(tpg);
 272                 return ERR_CAST(tpg_np);
 273         }
 274         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 275
 276         iscsit_put_tpg(tpg);
 277         return &tpg_np->se_tpg_np;
 278 }
 279
 280 static void lio_target_call_delnpfromtpg(
 281         struct se_tpg_np *se_tpg_np)
 282 {
 283         struct iscsi_portal_group *tpg;
 284         struct iscsi_tpg_np *tpg_np;
 285         struct se_portal_group *se_tpg;
 286         int ret;
 287
 288         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 289         tpg = tpg_np->tpg;
 290         ret = iscsit_get_tpg(tpg);
 291         if (ret < 0)
 292                 return;
 293
 294         se_tpg = &tpg->tpg_se_tpg;
 295         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 296                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 297                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 298
 299         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 300         if (ret < 0)
 301                 goto out;
 302
 303         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 304 out:
 305         iscsit_put_tpg(tpg);
 306 }
 307
 308 /* End items for lio_target_np_cit */
 309
 310 /* Start items for lio_target_nacl_attrib_cit */
 311
 312 #define DEF_NACL_ATTRIB(name)                                           \
 313 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 314         struct se_node_acl *se_nacl,                                    \
 315         char *page)                                                     \
 316 {                                                                       \
 317         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 318                                         se_node_acl);                   \
 319                                                                         \
 320         return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name);    \
 321 }                                                                       \
 322                                                                         \
 323 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 324         struct se_node_acl *se_nacl,                                    \
 325         const char *page,                                               \
 326         size_t count)                                                   \
 327 {                                                                       \
 328         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 329                                         se_node_acl);                   \
 330         char *endptr;                                                   \
 331         u32 val;                                                        \
 332         int ret;                                                        \
 333                                                                         \
 334         val = simple_strtoul(page, &endptr, 0);                         \
 335         ret = iscsit_na_##name(nacl, val);                              \
 336         if (ret < 0)                                                    \
 337                 return ret;                                             \
 338                                                                         \
 339         return count;                                                   \
 340 }
 341
 342 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 343 /*
 344  * Define iscsi_node_attrib_s_dataout_timeout
 345  */
 346 DEF_NACL_ATTRIB(dataout_timeout);
 347 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 348 /*
 349  * Define iscsi_node_attrib_s_dataout_timeout_retries
 350  */
 351 DEF_NACL_ATTRIB(dataout_timeout_retries);
 352 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 353 /*
 354  * Define iscsi_node_attrib_s_default_erl
 355  */
 356 DEF_NACL_ATTRIB(default_erl);
 357 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 358 /*
 359  * Define iscsi_node_attrib_s_nopin_timeout
 360  */
 361 DEF_NACL_ATTRIB(nopin_timeout);
 362 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 363 /*
 364  * Define iscsi_node_attrib_s_nopin_response_timeout
 365  */
 366 DEF_NACL_ATTRIB(nopin_response_timeout);
 367 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 368 /*
 369  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 370  */
 371 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 372 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 373 /*
 374  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 375  */
 376 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 377 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 378 /*
 379  * Define iscsi_node_attrib_s_random_r2t_offsets
 380  */
 381 DEF_NACL_ATTRIB(random_r2t_offsets);
 382 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 383
 384 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 385         &iscsi_nacl_attrib_dataout_timeout.attr,
 386         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 387         &iscsi_nacl_attrib_default_erl.attr,
 388         &iscsi_nacl_attrib_nopin_timeout.attr,
 389         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 390         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 391         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 392         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 393         NULL,
 394 };
 395
 396 /* End items for lio_target_nacl_attrib_cit */
 397
 398 /* Start items for lio_target_nacl_auth_cit */
 399
 400 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 401 static ssize_t __iscsi_##prefix##_show_##name(                          \
 402         struct iscsi_node_acl *nacl,                                    \
 403         char *page)                                                     \
 404 {                                                                       \
 405         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 406                                                                         \
 407         if (!capable(CAP_SYS_ADMIN))                                    \
 408                 return -EPERM;                                          \
 409         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 410 }                                                                       \
 411                                                                         \
 412 static ssize_t __iscsi_##prefix##_store_##name(                         \
 413         struct iscsi_node_acl *nacl,                                    \
 414         const char *page,                                               \
 415         size_t count)                                                   \
 416 {                                                                       \
 417         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 418                                                                         \
 419         if (!capable(CAP_SYS_ADMIN))                                    \
 420                 return -EPERM;                                          \
 421                                                                         \
 422         snprintf(auth->name, PAGE_SIZE, "%s", page);                    \
 423         if (!strncmp("NULL", auth->name, 4))                            \
 424                 auth->naf_flags &= ~flags;                              \
 425         else                                                            \
 426                 auth->naf_flags |= flags;                               \
 427                                                                         \
 428         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 429             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 430                 auth->authenticate_target = 1;                          \
 431         else                                                            \
 432                 auth->authenticate_target = 0;                          \
 433                                                                         \
 434         return count;                                                   \
 435 }
 436
 437 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 438 static ssize_t __iscsi_##prefix##_show_##name(                          \
 439         struct iscsi_node_acl *nacl,                                    \
 440         char *page)                                                     \
 441 {                                                                       \
 442         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 443                                                                         \
 444         if (!capable(CAP_SYS_ADMIN))                                    \
 445                 return -EPERM;                                          \
 446                                                                         \
 447         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 448 }
 449
 450 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 451         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 452 static ssize_t iscsi_nacl_auth_show_##name(                             \
 453         struct se_node_acl *nacl,                                       \
 454         char *page)                                                     \
 455 {                                                                       \
 456         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 457                         struct iscsi_node_acl, se_node_acl), page);             \
 458 }                                                                       \
 459 static ssize_t iscsi_nacl_auth_store_##name(                            \
 460         struct se_node_acl *nacl,                                       \
 461         const char *page,                                               \
 462         size_t count)                                                   \
 463 {                                                                       \
 464         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 465                         struct iscsi_node_acl, se_node_acl), page, count);      \
 466 }
 467
 468 #define DEF_NACL_AUTH_INT(name)                                         \
 469         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 470 static ssize_t iscsi_nacl_auth_show_##name(                             \
 471         struct se_node_acl *nacl,                                       \
 472         char *page)                                                     \
 473 {                                                                       \
 474         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 475                         struct iscsi_node_acl, se_node_acl), page);             \
 476 }
 477
 478 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 479 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 480
 481 /*
 482  * One-way authentication userid
 483  */
 484 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 485 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 486 /*
 487  * One-way authentication password
 488  */
 489 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 490 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 491 /*
 492  * Enforce mutual authentication
 493  */
 494 DEF_NACL_AUTH_INT(authenticate_target);
 495 AUTH_ATTR_RO(authenticate_target);
 496 /*
 497  * Mutual authentication userid
 498  */
 499 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 500 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 501 /*
 502  * Mutual authentication password
 503  */
 504 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 505 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 506
 507 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 508         &iscsi_nacl_auth_userid.attr,
 509         &iscsi_nacl_auth_password.attr,
 510         &iscsi_nacl_auth_authenticate_target.attr,
 511         &iscsi_nacl_auth_userid_mutual.attr,
 512         &iscsi_nacl_auth_password_mutual.attr,
 513         NULL,
 514 };
 515
 516 /* End items for lio_target_nacl_auth_cit */
 517
 518 /* Start items for lio_target_nacl_param_cit */
 519
 520 #define DEF_NACL_PARAM(name)                                            \
 521 static ssize_t iscsi_nacl_param_show_##name(                            \
 522         struct se_node_acl *se_nacl,                                    \
 523         char *page)                                                     \
 524 {                                                                       \
 525         struct iscsi_session *sess;                                     \
 526         struct se_session *se_sess;                                     \
 527         ssize_t rb;                                                     \
 528                                                                         \
 529         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 530         se_sess = se_nacl->nacl_sess;                                   \
 531         if (!se_sess) {                                                 \
 532                 rb = snprintf(page, PAGE_SIZE,                          \
 533                         "No Active iSCSI Session\n");                   \
 534         } else {                                                        \
 535                 sess = se_sess->fabric_sess_ptr;                        \
 536                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 537                         (u32)sess->sess_ops->name);                     \
 538         }                                                               \
 539         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 540                                                                         \
 541         return rb;                                                      \
 542 }
 543
 544 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 545
 546 DEF_NACL_PARAM(MaxConnections);
 547 NACL_PARAM_ATTR(MaxConnections);
 548
 549 DEF_NACL_PARAM(InitialR2T);
 550 NACL_PARAM_ATTR(InitialR2T);
 551
 552 DEF_NACL_PARAM(ImmediateData);
 553 NACL_PARAM_ATTR(ImmediateData);
 554
 555 DEF_NACL_PARAM(MaxBurstLength);
 556 NACL_PARAM_ATTR(MaxBurstLength);
 557
 558 DEF_NACL_PARAM(FirstBurstLength);
 559 NACL_PARAM_ATTR(FirstBurstLength);
 560
 561 DEF_NACL_PARAM(DefaultTime2Wait);
 562 NACL_PARAM_ATTR(DefaultTime2Wait);
 563
 564 DEF_NACL_PARAM(DefaultTime2Retain);
 565 NACL_PARAM_ATTR(DefaultTime2Retain);
 566
 567 DEF_NACL_PARAM(MaxOutstandingR2T);
 568 NACL_PARAM_ATTR(MaxOutstandingR2T);
 569
 570 DEF_NACL_PARAM(DataPDUInOrder);
 571 NACL_PARAM_ATTR(DataPDUInOrder);
 572
 573 DEF_NACL_PARAM(DataSequenceInOrder);
 574 NACL_PARAM_ATTR(DataSequenceInOrder);
 575
 576 DEF_NACL_PARAM(ErrorRecoveryLevel);
 577 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 578
 579 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 580         &iscsi_nacl_param_MaxConnections.attr,
 581         &iscsi_nacl_param_InitialR2T.attr,
 582         &iscsi_nacl_param_ImmediateData.attr,
 583         &iscsi_nacl_param_MaxBurstLength.attr,
 584         &iscsi_nacl_param_FirstBurstLength.attr,
 585         &iscsi_nacl_param_DefaultTime2Wait.attr,
 586         &iscsi_nacl_param_DefaultTime2Retain.attr,
 587         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 588         &iscsi_nacl_param_DataPDUInOrder.attr,
 589         &iscsi_nacl_param_DataSequenceInOrder.attr,
 590         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 591         NULL,
 592 };
 593
 594 /* End items for lio_target_nacl_param_cit */
 595
 596 /* Start items for lio_target_acl_cit */
 597
 598 static ssize_t lio_target_nacl_show_info(
 599         struct se_node_acl *se_nacl,
 600         char *page)
 601 {
 602         struct iscsi_session *sess;
 603         struct iscsi_conn *conn;
 604         struct se_session *se_sess;
 605         ssize_t rb = 0;
 606
 607         spin_lock_bh(&se_nacl->nacl_sess_lock);
 608         se_sess = se_nacl->nacl_sess;
 609         if (!se_sess) {
 610                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 611                         " Endpoint: %s\n", se_nacl->initiatorname);
 612         } else {
 613                 sess = se_sess->fabric_sess_ptr;
 614
 615                 if (sess->sess_ops->InitiatorName)
 616                         rb += sprintf(page+rb, "InitiatorName: %s\n",
 617                                 sess->sess_ops->InitiatorName);
 618                 if (sess->sess_ops->InitiatorAlias)
 619                         rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 620                                 sess->sess_ops->InitiatorAlias);
 621
 622                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 623                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 624                         "TSIH: %hu  ", sess->sid,
 625                         sess->isid[0], sess->isid[1], sess->isid[2],
 626                         sess->isid[3], sess->isid[4], sess->isid[5],
 627                         sess->tsih);
 628                 rb += sprintf(page+rb, "SessionType: %s\n",
 629                                 (sess->sess_ops->SessionType) ?
 630                                 "Discovery" : "Normal");
 631                 rb += sprintf(page+rb, "Session State: ");
 632                 switch (sess->session_state) {
 633                 case TARG_SESS_STATE_FREE:
 634                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 635                         break;
 636                 case TARG_SESS_STATE_ACTIVE:
 637                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 638                         break;
 639                 case TARG_SESS_STATE_LOGGED_IN:
 640                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 641                         break;
 642                 case TARG_SESS_STATE_FAILED:
 643                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 644                         break;
 645                 case TARG_SESS_STATE_IN_CONTINUE:
 646                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 647                         break;
 648                 default:
 649                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 650                                         " State!\n");
 651                         break;
 652                 }
 653
 654                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 655                                 " Values]-----------------------\n");
 656                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 657                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 658                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 659                                 "   0x%08x   0x%08x\n",
 660                         sess->cmdsn_window,
 661                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 662                         sess->exp_cmd_sn, sess->max_cmd_sn,
 663                         sess->init_task_tag, sess->targ_xfer_tag);
 664                 rb += sprintf(page+rb, "----------------------[iSCSI"
 665                                 " Connections]-------------------------\n");
 666
 667                 spin_lock(&sess->conn_lock);
 668                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 669                         rb += sprintf(page+rb, "CID: %hu  Connection"
 670                                         " State: ", conn->cid);
 671                         switch (conn->conn_state) {
 672                         case TARG_CONN_STATE_FREE:
 673                                 rb += sprintf(page+rb,
 674                                         "TARG_CONN_STATE_FREE\n");
 675                                 break;
 676                         case TARG_CONN_STATE_XPT_UP:
 677                                 rb += sprintf(page+rb,
 678                                         "TARG_CONN_STATE_XPT_UP\n");
 679                                 break;
 680                         case TARG_CONN_STATE_IN_LOGIN:
 681                                 rb += sprintf(page+rb,
 682                                         "TARG_CONN_STATE_IN_LOGIN\n");
 683                                 break;
 684                         case TARG_CONN_STATE_LOGGED_IN:
 685                                 rb += sprintf(page+rb,
 686                                         "TARG_CONN_STATE_LOGGED_IN\n");
 687                                 break;
 688                         case TARG_CONN_STATE_IN_LOGOUT:
 689                                 rb += sprintf(page+rb,
 690                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 691                                 break;
 692                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 693                                 rb += sprintf(page+rb,
 694                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 695                                 break;
 696                         case TARG_CONN_STATE_CLEANUP_WAIT:
 697                                 rb += sprintf(page+rb,
 698                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 699                                 break;
 700                         default:
 701                                 rb += sprintf(page+rb,
 702                                         "ERROR: Unknown Connection State!\n");
 703                                 break;
 704                         }
 705
 706                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 707                                 (conn->network_transport == ISCSI_TCP) ?
 708                                 "TCP" : "SCTP");
 709                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 710                                 conn->stat_sn);
 711                 }
 712                 spin_unlock(&sess->conn_lock);
 713         }
 714         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 715
 716         return rb;
 717 }
 718
 719 TF_NACL_BASE_ATTR_RO(lio_target, info);
 720
 721 static ssize_t lio_target_nacl_show_cmdsn_depth(
 722         struct se_node_acl *se_nacl,
 723         char *page)
 724 {
 725         return sprintf(page, "%u\n", se_nacl->queue_depth);
 726 }
 727
 728 static ssize_t lio_target_nacl_store_cmdsn_depth(
 729         struct se_node_acl *se_nacl,
 730         const char *page,
 731         size_t count)
 732 {
 733         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 734         struct iscsi_portal_group *tpg = container_of(se_tpg,
 735                         struct iscsi_portal_group, tpg_se_tpg);
 736         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 737         char *endptr;
 738         u32 cmdsn_depth = 0;
 739         int ret;
 740
 741         cmdsn_depth = simple_strtoul(page, &endptr, 0);
 742         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 743                 pr_err("Passed cmdsn_depth: %u exceeds"
 744                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 745                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 746                 return -EINVAL;
 747         }
 748         acl_ci = &se_nacl->acl_group.cg_item;
 749         if (!acl_ci) {
 750                 pr_err("Unable to locatel acl_ci\n");
 751                 return -EINVAL;
 752         }
 753         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 754         if (!tpg_ci) {
 755                 pr_err("Unable to locate tpg_ci\n");
 756                 return -EINVAL;
 757         }
 758         wwn_ci = &tpg_ci->ci_group->cg_item;
 759         if (!wwn_ci) {
 760                 pr_err("Unable to locate config_item wwn_ci\n");
 761                 return -EINVAL;
 762         }
 763
 764         if (iscsit_get_tpg(tpg) < 0)
 765                 return -EINVAL;
 766         /*
 767          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 768          */
 769         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 770                                 config_item_name(acl_ci), cmdsn_depth, 1);
 771
 772         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 773                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 774                 config_item_name(tpg_ci), cmdsn_depth,
 775                 config_item_name(acl_ci));
 776
 777         iscsit_put_tpg(tpg);
 778         return (!ret) ? count : (ssize_t)ret;
 779 }
 780
 781 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 782
 783 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 784         &lio_target_nacl_info.attr,
 785         &lio_target_nacl_cmdsn_depth.attr,
 786         NULL,
 787 };
 788
 789 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 790         struct se_portal_group *se_tpg)
 791 {
 792         struct iscsi_node_acl *acl;
 793
 794         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 795         if (!acl) {
 796                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 797                 return NULL;
 798         }
 799
 800         return &acl->se_node_acl;
 801 }
 802
 803 static struct se_node_acl *lio_target_make_nodeacl(
 804         struct se_portal_group *se_tpg,
 805         struct config_group *group,
 806         const char *name)
 807 {
 808         struct config_group *stats_cg;
 809         struct iscsi_node_acl *acl;
 810         struct se_node_acl *se_nacl_new, *se_nacl;
 811         struct iscsi_portal_group *tpg = container_of(se_tpg,
 812                         struct iscsi_portal_group, tpg_se_tpg);
 813         u32 cmdsn_depth;
 814
 815         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 816         if (!se_nacl_new)
 817                 return ERR_PTR(-ENOMEM);
 818
 819         cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
 820         /*
 821          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 822          * when converting a NdoeACL from demo mode -> explict
 823          */
 824         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 825                                 name, cmdsn_depth);
 826         if (IS_ERR(se_nacl))
 827                 return se_nacl;
 828
 829         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 830         stats_cg = &se_nacl->acl_fabric_stat_group;
 831
 832         stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 2,
 833                                 GFP_KERNEL);
 834         if (!stats_cg->default_groups) {
 835                 pr_err("Unable to allocate memory for"
 836                                 " stats_cg->default_groups\n");
 837                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 838                 kfree(acl);
 839                 return ERR_PTR(-ENOMEM);
 840         }
 841
 842         stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
 843         stats_cg->default_groups[1] = NULL;
 844         config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
 845                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 846
 847         return se_nacl;
 848 }
 849
 850 static void lio_target_drop_nodeacl(
 851         struct se_node_acl *se_nacl)
 852 {
 853         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 854         struct iscsi_node_acl *acl = container_of(se_nacl,
 855                         struct iscsi_node_acl, se_node_acl);
 856         struct config_item *df_item;
 857         struct config_group *stats_cg;
 858         int i;
 859
 860         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 861         for (i = 0; stats_cg->default_groups[i]; i++) {
 862                 df_item = &stats_cg->default_groups[i]->cg_item;
 863                 stats_cg->default_groups[i] = NULL;
 864                 config_item_put(df_item);
 865         }
 866         kfree(stats_cg->default_groups);
 867
 868         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 869         kfree(acl);
 870 }
 871
 872 /* End items for lio_target_acl_cit */
 873
 874 /* Start items for lio_target_tpg_attrib_cit */
 875
 876 #define DEF_TPG_ATTRIB(name)                                            \
 877                                                                         \
 878 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 879         struct se_portal_group *se_tpg,                         \
 880         char *page)                                                     \
 881 {                                                                       \
 882         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 883                         struct iscsi_portal_group, tpg_se_tpg); \
 884         ssize_t rb;                                                     \
 885                                                                         \
 886         if (iscsit_get_tpg(tpg) < 0)                                    \
 887                 return -EINVAL;                                         \
 888                                                                         \
 889         rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name);        \
 890         iscsit_put_tpg(tpg);                                            \
 891         return rb;                                                      \
 892 }                                                                       \
 893                                                                         \
 894 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 895         struct se_portal_group *se_tpg,                         \
 896         const char *page,                                               \
 897         size_t count)                                                   \
 898 {                                                                       \
 899         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 900                         struct iscsi_portal_group, tpg_se_tpg); \
 901         char *endptr;                                                   \
 902         u32 val;                                                        \
 903         int ret;                                                        \
 904                                                                         \
 905         if (iscsit_get_tpg(tpg) < 0)                                    \
 906                 return -EINVAL;                                         \
 907                                                                         \
 908         val = simple_strtoul(page, &endptr, 0);                         \
 909         ret = iscsit_ta_##name(tpg, val);                               \
 910         if (ret < 0)                                                    \
 911                 goto out;                                               \
 912                                                                         \
 913         iscsit_put_tpg(tpg);                                            \
 914         return count;                                                   \
 915 out:                                                                    \
 916         iscsit_put_tpg(tpg);                                            \
 917         return ret;                                                     \
 918 }
 919
 920 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 921
 922 /*
 923  * Define iscsi_tpg_attrib_s_authentication
 924  */
 925 DEF_TPG_ATTRIB(authentication);
 926 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
 927 /*
 928  * Define iscsi_tpg_attrib_s_login_timeout
 929  */
 930 DEF_TPG_ATTRIB(login_timeout);
 931 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
 932 /*
 933  * Define iscsi_tpg_attrib_s_netif_timeout
 934  */
 935 DEF_TPG_ATTRIB(netif_timeout);
 936 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
 937 /*
 938  * Define iscsi_tpg_attrib_s_generate_node_acls
 939  */
 940 DEF_TPG_ATTRIB(generate_node_acls);
 941 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 942 /*
 943  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
 944  */
 945 DEF_TPG_ATTRIB(default_cmdsn_depth);
 946 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
 947 /*
 948  Define iscsi_tpg_attrib_s_cache_dynamic_acls
 949  */
 950 DEF_TPG_ATTRIB(cache_dynamic_acls);
 951 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 952 /*
 953  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
 954  */
 955 DEF_TPG_ATTRIB(demo_mode_write_protect);
 956 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 957 /*
 958  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
 959  */
 960 DEF_TPG_ATTRIB(prod_mode_write_protect);
 961 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 962
 963 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
 964         &iscsi_tpg_attrib_authentication.attr,
 965         &iscsi_tpg_attrib_login_timeout.attr,
 966         &iscsi_tpg_attrib_netif_timeout.attr,
 967         &iscsi_tpg_attrib_generate_node_acls.attr,
 968         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
 969         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
 970         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
 971         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
 972         NULL,
 973 };
 974
 975 /* End items for lio_target_tpg_attrib_cit */
 976
 977 /* Start items for lio_target_tpg_param_cit */
 978
 979 #define DEF_TPG_PARAM(name)                                             \
 980 static ssize_t iscsi_tpg_param_show_##name(                             \
 981         struct se_portal_group *se_tpg,                                 \
 982         char *page)                                                     \
 983 {                                                                       \
 984         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 985                         struct iscsi_portal_group, tpg_se_tpg);         \
 986         struct iscsi_param *param;                                      \
 987         ssize_t rb;                                                     \
 988                                                                         \
 989         if (iscsit_get_tpg(tpg) < 0)                                    \
 990                 return -EINVAL;                                         \
 991                                                                         \
 992         param = iscsi_find_param_from_key(__stringify(name),            \
 993                                 tpg->param_list);                       \
 994         if (!param) {                                                   \
 995                 iscsit_put_tpg(tpg);                                    \
 996                 return -EINVAL;                                         \
 997         }                                                               \
 998         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
 999                                                                         \
1000         iscsit_put_tpg(tpg);                                            \
1001         return rb;                                                      \
1002 }                                                                       \
1003 static ssize_t iscsi_tpg_param_store_##name(                            \
1004         struct se_portal_group *se_tpg,                         \
1005         const char *page,                                               \
1006         size_t count)                                                   \
1007 {                                                                       \
1008         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1009                         struct iscsi_portal_group, tpg_se_tpg);         \
1010         char *buf;                                                      \
1011         int ret;                                                        \
1012                                                                         \
1013         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1014         if (!buf)                                                       \
1015                 return -ENOMEM;                                         \
1016         snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);     \
1017         buf[strlen(buf)-1] = '\0'; /* Kill newline */                   \
1018                                                                         \
1019         if (iscsit_get_tpg(tpg) < 0) {                                  \
1020                 kfree(buf);                                             \
1021                 return -EINVAL;                                         \
1022         }                                                               \
1023                                                                         \
1024         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1025         if (ret < 0)                                                    \
1026                 goto out;                                               \
1027                                                                         \
1028         kfree(buf);                                                     \
1029         iscsit_put_tpg(tpg);                                            \
1030         return count;                                                   \
1031 out:                                                                    \
1032         kfree(buf);                                                     \
1033         iscsit_put_tpg(tpg);                                            \
1034         return -EINVAL;                                         \
1035 }
1036
1037 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1038
1039 DEF_TPG_PARAM(AuthMethod);
1040 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1041
1042 DEF_TPG_PARAM(HeaderDigest);
1043 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1044
1045 DEF_TPG_PARAM(DataDigest);
1046 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1047
1048 DEF_TPG_PARAM(MaxConnections);
1049 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1050
1051 DEF_TPG_PARAM(TargetAlias);
1052 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1053
1054 DEF_TPG_PARAM(InitialR2T);
1055 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1056
1057 DEF_TPG_PARAM(ImmediateData);
1058 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1059
1060 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1061 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1062
1063 DEF_TPG_PARAM(MaxBurstLength);
1064 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1065
1066 DEF_TPG_PARAM(FirstBurstLength);
1067 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1068
1069 DEF_TPG_PARAM(DefaultTime2Wait);
1070 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1071
1072 DEF_TPG_PARAM(DefaultTime2Retain);
1073 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1074
1075 DEF_TPG_PARAM(MaxOutstandingR2T);
1076 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1077
1078 DEF_TPG_PARAM(DataPDUInOrder);
1079 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1080
1081 DEF_TPG_PARAM(DataSequenceInOrder);
1082 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1083
1084 DEF_TPG_PARAM(ErrorRecoveryLevel);
1085 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1086
1087 DEF_TPG_PARAM(IFMarker);
1088 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1089
1090 DEF_TPG_PARAM(OFMarker);
1091 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1092
1093 DEF_TPG_PARAM(IFMarkInt);
1094 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1095
1096 DEF_TPG_PARAM(OFMarkInt);
1097 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1098
1099 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1100         &iscsi_tpg_param_AuthMethod.attr,
1101         &iscsi_tpg_param_HeaderDigest.attr,
1102         &iscsi_tpg_param_DataDigest.attr,
1103         &iscsi_tpg_param_MaxConnections.attr,
1104         &iscsi_tpg_param_TargetAlias.attr,
1105         &iscsi_tpg_param_InitialR2T.attr,
1106         &iscsi_tpg_param_ImmediateData.attr,
1107         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1108         &iscsi_tpg_param_MaxBurstLength.attr,
1109         &iscsi_tpg_param_FirstBurstLength.attr,
1110         &iscsi_tpg_param_DefaultTime2Wait.attr,
1111         &iscsi_tpg_param_DefaultTime2Retain.attr,
1112         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1113         &iscsi_tpg_param_DataPDUInOrder.attr,
1114         &iscsi_tpg_param_DataSequenceInOrder.attr,
1115         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1116         &iscsi_tpg_param_IFMarker.attr,
1117         &iscsi_tpg_param_OFMarker.attr,
1118         &iscsi_tpg_param_IFMarkInt.attr,
1119         &iscsi_tpg_param_OFMarkInt.attr,
1120         NULL,
1121 };
1122
1123 /* End items for lio_target_tpg_param_cit */
1124
1125 /* Start items for lio_target_tpg_cit */
1126
1127 static ssize_t lio_target_tpg_show_enable(
1128         struct se_portal_group *se_tpg,
1129         char *page)
1130 {
1131         struct iscsi_portal_group *tpg = container_of(se_tpg,
1132                         struct iscsi_portal_group, tpg_se_tpg);
1133         ssize_t len;
1134
1135         spin_lock(&tpg->tpg_state_lock);
1136         len = sprintf(page, "%d\n",
1137                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1138         spin_unlock(&tpg->tpg_state_lock);
1139
1140         return len;
1141 }
1142
1143 static ssize_t lio_target_tpg_store_enable(
1144         struct se_portal_group *se_tpg,
1145         const char *page,
1146         size_t count)
1147 {
1148         struct iscsi_portal_group *tpg = container_of(se_tpg,
1149                         struct iscsi_portal_group, tpg_se_tpg);
1150         char *endptr;
1151         u32 op;
1152         int ret = 0;
1153
1154         op = simple_strtoul(page, &endptr, 0);
1155         if ((op != 1) && (op != 0)) {
1156                 pr_err("Illegal value for tpg_enable: %u\n", op);
1157                 return -EINVAL;
1158         }
1159
1160         ret = iscsit_get_tpg(tpg);
1161         if (ret < 0)
1162                 return -EINVAL;
1163
1164         if (op) {
1165                 ret = iscsit_tpg_enable_portal_group(tpg);
1166                 if (ret < 0)
1167                         goto out;
1168         } else {
1169                 /*
1170                  * iscsit_tpg_disable_portal_group() assumes force=1
1171                  */
1172                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1173                 if (ret < 0)
1174                         goto out;
1175         }
1176
1177         iscsit_put_tpg(tpg);
1178         return count;
1179 out:
1180         iscsit_put_tpg(tpg);
1181         return -EINVAL;
1182 }
1183
1184 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1185
1186 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1187         &lio_target_tpg_enable.attr,
1188         NULL,
1189 };
1190
1191 /* End items for lio_target_tpg_cit */
1192
1193 /* Start items for lio_target_tiqn_cit */
1194
1195 struct se_portal_group *lio_target_tiqn_addtpg(
1196         struct se_wwn *wwn,
1197         struct config_group *group,
1198         const char *name)
1199 {
1200         struct iscsi_portal_group *tpg;
1201         struct iscsi_tiqn *tiqn;
1202         char *tpgt_str, *end_ptr;
1203         int ret = 0;
1204         unsigned short int tpgt;
1205
1206         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1207         /*
1208          * Only tpgt_# directory groups can be created below
1209          * target/iscsi/iqn.superturodiskarry/
1210         */
1211         tpgt_str = strstr(name, "tpgt_");
1212         if (!tpgt_str) {
1213                 pr_err("Unable to locate \"tpgt_#\" directory"
1214                                 " group\n");
1215                 return NULL;
1216         }
1217         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1218         tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1219
1220         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1221         if (!tpg)
1222                 return NULL;
1223
1224         ret = core_tpg_register(
1225                         &lio_target_fabric_configfs->tf_ops,
1226                         wwn, &tpg->tpg_se_tpg, (void *)tpg,
1227                         TRANSPORT_TPG_TYPE_NORMAL);
1228         if (ret < 0)
1229                 return NULL;
1230
1231         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1232         if (ret != 0)
1233                 goto out;
1234
1235         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1236         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1237                         name);
1238         return &tpg->tpg_se_tpg;
1239 out:
1240         core_tpg_deregister(&tpg->tpg_se_tpg);
1241         kfree(tpg);
1242         return NULL;
1243 }
1244
1245 void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1246 {
1247         struct iscsi_portal_group *tpg;
1248         struct iscsi_tiqn *tiqn;
1249
1250         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1251         tiqn = tpg->tpg_tiqn;
1252         /*
1253          * iscsit_tpg_del_portal_group() assumes force=1
1254          */
1255         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1256         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1257 }
1258
1259 /* End items for lio_target_tiqn_cit */
1260
1261 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1262
1263 static ssize_t lio_target_wwn_show_attr_lio_version(
1264         struct target_fabric_configfs *tf,
1265         char *page)
1266 {
1267         return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1268 }
1269
1270 TF_WWN_ATTR_RO(lio_target, lio_version);
1271
1272 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1273         &lio_target_wwn_lio_version.attr,
1274         NULL,
1275 };
1276
1277 struct se_wwn *lio_target_call_coreaddtiqn(
1278         struct target_fabric_configfs *tf,
1279         struct config_group *group,
1280         const char *name)
1281 {
1282         struct config_group *stats_cg;
1283         struct iscsi_tiqn *tiqn;
1284
1285         tiqn = iscsit_add_tiqn((unsigned char *)name);
1286         if (IS_ERR(tiqn))
1287                 return ERR_CAST(tiqn);
1288         /*
1289          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1290          */
1291         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1292
1293         stats_cg->default_groups = kzalloc(sizeof(struct config_group) * 6,
1294                                 GFP_KERNEL);
1295         if (!stats_cg->default_groups) {
1296                 pr_err("Unable to allocate memory for"
1297                                 " stats_cg->default_groups\n");
1298                 iscsit_del_tiqn(tiqn);
1299                 return ERR_PTR(-ENOMEM);
1300         }
1301
1302         stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1303         stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1304         stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1305         stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1306         stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1307         stats_cg->default_groups[5] = NULL;
1308         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1309                         "iscsi_instance", &iscsi_stat_instance_cit);
1310         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1311                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1312         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1313                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1314         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1315                         "iscsi_login_stats", &iscsi_stat_login_cit);
1316         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1317                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1318
1319         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1320         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1321                         " %s\n", name);
1322         return &tiqn->tiqn_wwn;
1323 }
1324
1325 void lio_target_call_coredeltiqn(
1326         struct se_wwn *wwn)
1327 {
1328         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1329         struct config_item *df_item;
1330         struct config_group *stats_cg;
1331         int i;
1332
1333         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1334         for (i = 0; stats_cg->default_groups[i]; i++) {
1335                 df_item = &stats_cg->default_groups[i]->cg_item;
1336                 stats_cg->default_groups[i] = NULL;
1337                 config_item_put(df_item);
1338         }
1339         kfree(stats_cg->default_groups);
1340
1341         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1342                         tiqn->tiqn);
1343         iscsit_del_tiqn(tiqn);
1344 }
1345
1346 /* End LIO-Target TIQN struct contig_lio_target_cit */
1347
1348 /* Start lio_target_discovery_auth_cit */
1349
1350 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1351         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1352 static ssize_t iscsi_disc_show_##name(                                  \
1353         struct target_fabric_configfs *tf,                              \
1354         char *page)                                                     \
1355 {                                                                       \
1356         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1357                 page);                                                  \
1358 }                                                                       \
1359 static ssize_t iscsi_disc_store_##name(                                 \
1360         struct target_fabric_configfs *tf,                              \
1361         const char *page,                                               \
1362         size_t count)                                                   \
1363 {                                                                       \
1364         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1365                 page, count);                                           \
1366 }
1367
1368 #define DEF_DISC_AUTH_INT(name)                                         \
1369         __DEF_NACL_AUTH_INT(disc, name)                                 \
1370 static ssize_t iscsi_disc_show_##name(                                  \
1371         struct target_fabric_configfs *tf,                              \
1372         char *page)                                                     \
1373 {                                                                       \
1374         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1375                         page);                                          \
1376 }
1377
1378 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1379 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1380
1381 /*
1382  * One-way authentication userid
1383  */
1384 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1385 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1386 /*
1387  * One-way authentication password
1388  */
1389 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1390 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1391 /*
1392  * Enforce mutual authentication
1393  */
1394 DEF_DISC_AUTH_INT(authenticate_target);
1395 DISC_AUTH_ATTR_RO(authenticate_target);
1396 /*
1397  * Mutual authentication userid
1398  */
1399 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1400 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1401 /*
1402  * Mutual authentication password
1403  */
1404 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1405 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1406
1407 /*
1408  * enforce_discovery_auth
1409  */
1410 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1411         struct target_fabric_configfs *tf,
1412         char *page)
1413 {
1414         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1415
1416         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1417 }
1418
1419 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1420         struct target_fabric_configfs *tf,
1421         const char *page,
1422         size_t count)
1423 {
1424         struct iscsi_param *param;
1425         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1426         char *endptr;
1427         u32 op;
1428
1429         op = simple_strtoul(page, &endptr, 0);
1430         if ((op != 1) && (op != 0)) {
1431                 pr_err("Illegal value for enforce_discovery_auth:"
1432                                 " %u\n", op);
1433                 return -EINVAL;
1434         }
1435
1436         if (!discovery_tpg) {
1437                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1438                 return -EINVAL;
1439         }
1440
1441         param = iscsi_find_param_from_key(AUTHMETHOD,
1442                                 discovery_tpg->param_list);
1443         if (!param)
1444                 return -EINVAL;
1445
1446         if (op) {
1447                 /*
1448                  * Reset the AuthMethod key to CHAP.
1449                  */
1450                 if (iscsi_update_param_value(param, CHAP) < 0)
1451                         return -EINVAL;
1452
1453                 discovery_tpg->tpg_attrib.authentication = 1;
1454                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1455                 pr_debug("LIO-CORE[0] Successfully enabled"
1456                         " authentication enforcement for iSCSI"
1457                         " Discovery TPG\n");
1458         } else {
1459                 /*
1460                  * Reset the AuthMethod key to CHAP,None
1461                  */
1462                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1463                         return -EINVAL;
1464
1465                 discovery_tpg->tpg_attrib.authentication = 0;
1466                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1467                 pr_debug("LIO-CORE[0] Successfully disabled"
1468                         " authentication enforcement for iSCSI"
1469                         " Discovery TPG\n");
1470         }
1471
1472         return count;
1473 }
1474
1475 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1476
1477 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1478         &iscsi_disc_userid.attr,
1479         &iscsi_disc_password.attr,
1480         &iscsi_disc_authenticate_target.attr,
1481         &iscsi_disc_userid_mutual.attr,
1482         &iscsi_disc_password_mutual.attr,
1483         &iscsi_disc_enforce_discovery_auth.attr,
1484         NULL,
1485 };
1486
1487 /* End lio_target_discovery_auth_cit */
1488
1489 /* Start functions for target_core_fabric_ops */
1490
1491 static char *iscsi_get_fabric_name(void)
1492 {
1493         return "iSCSI";
1494 }
1495
1496 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1497 {
1498         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1499
1500         return cmd->init_task_tag;
1501 }
1502
1503 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1504 {
1505         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1506
1507         return cmd->i_state;
1508 }
1509
1510 static int iscsi_is_state_remove(struct se_cmd *se_cmd)
1511 {
1512         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1513
1514         return (cmd->i_state == ISTATE_REMOVE);
1515 }
1516
1517 static int lio_sess_logged_in(struct se_session *se_sess)
1518 {
1519         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1520         int ret;
1521         /*
1522          * Called with spin_lock_bh(&tpg_lock); and
1523          * spin_lock(&se_tpg->session_lock); held.
1524          */
1525         spin_lock(&sess->conn_lock);
1526         ret = (sess->session_state != TARG_SESS_STATE_LOGGED_IN);
1527         spin_unlock(&sess->conn_lock);
1528
1529         return ret;
1530 }
1531
1532 static u32 lio_sess_get_index(struct se_session *se_sess)
1533 {
1534         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1535
1536         return sess->session_index;
1537 }
1538
1539 static u32 lio_sess_get_initiator_sid(
1540         struct se_session *se_sess,
1541         unsigned char *buf,
1542         u32 size)
1543 {
1544         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1545         /*
1546          * iSCSI Initiator Session Identifier from RFC-3720.
1547          */
1548         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1549                 sess->isid[0], sess->isid[1], sess->isid[2],
1550                 sess->isid[3], sess->isid[4], sess->isid[5]);
1551 }
1552
1553 static int lio_queue_data_in(struct se_cmd *se_cmd)
1554 {
1555         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1556
1557         cmd->i_state = ISTATE_SEND_DATAIN;
1558         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1559         return 0;
1560 }
1561
1562 static int lio_write_pending(struct se_cmd *se_cmd)
1563 {
1564         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1565
1566         if (!cmd->immediate_data && !cmd->unsolicited_data)
1567                 return iscsit_build_r2ts_for_cmd(cmd, cmd->conn, 1);
1568
1569         return 0;
1570 }
1571
1572 static int lio_write_pending_status(struct se_cmd *se_cmd)
1573 {
1574         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1575         int ret;
1576
1577         spin_lock_bh(&cmd->istate_lock);
1578         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1579         spin_unlock_bh(&cmd->istate_lock);
1580
1581         return ret;
1582 }
1583
1584 static int lio_queue_status(struct se_cmd *se_cmd)
1585 {
1586         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1587
1588         cmd->i_state = ISTATE_SEND_STATUS;
1589         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1590         return 0;
1591 }
1592
1593 static u16 lio_set_fabric_sense_len(struct se_cmd *se_cmd, u32 sense_length)
1594 {
1595         unsigned char *buffer = se_cmd->sense_buffer;
1596         /*
1597          * From RFC-3720 10.4.7.  Data Segment - Sense and Response Data Segment
1598          * 16-bit SenseLength.
1599          */
1600         buffer[0] = ((sense_length >> 8) & 0xff);
1601         buffer[1] = (sense_length & 0xff);
1602         /*
1603          * Return two byte offset into allocated sense_buffer.
1604          */
1605         return 2;
1606 }
1607
1608 static u16 lio_get_fabric_sense_len(void)
1609 {
1610         /*
1611          * Return two byte offset into allocated sense_buffer.
1612          */
1613         return 2;
1614 }
1615
1616 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1617 {
1618         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1619
1620         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1621         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1622         return 0;
1623 }
1624
1625 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1626 {
1627         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1628
1629         return &tpg->tpg_tiqn->tiqn[0];
1630 }
1631
1632 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1633 {
1634         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1635
1636         return tpg->tpgt;
1637 }
1638
1639 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1640 {
1641         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1642
1643         return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1644 }
1645
1646 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1647 {
1648         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1649
1650         return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1651 }
1652
1653 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1654 {
1655         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1656
1657         return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1658 }
1659
1660 static int lio_tpg_check_demo_mode_write_protect(
1661         struct se_portal_group *se_tpg)
1662 {
1663         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1664
1665         return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1666 }
1667
1668 static int lio_tpg_check_prod_mode_write_protect(
1669         struct se_portal_group *se_tpg)
1670 {
1671         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1672
1673         return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1674 }
1675
1676 static void lio_tpg_release_fabric_acl(
1677         struct se_portal_group *se_tpg,
1678         struct se_node_acl *se_acl)
1679 {
1680         struct iscsi_node_acl *acl = container_of(se_acl,
1681                                 struct iscsi_node_acl, se_node_acl);
1682         kfree(acl);
1683 }
1684
1685 /*
1686  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1687  *
1688  * Also, this function calls iscsit_inc_session_usage_count() on the
1689  * struct iscsi_session in question.
1690  */
1691 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1692 {
1693         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1694
1695         spin_lock(&sess->conn_lock);
1696         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1697             atomic_read(&sess->session_logout) ||
1698             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1699                 spin_unlock(&sess->conn_lock);
1700                 return 0;
1701         }
1702         atomic_set(&sess->session_reinstatement, 1);
1703         spin_unlock(&sess->conn_lock);
1704
1705         iscsit_inc_session_usage_count(sess);
1706         iscsit_stop_time2retain_timer(sess);
1707
1708         return 1;
1709 }
1710
1711 /*
1712  * Calls iscsit_dec_session_usage_count() as inverse of
1713  * lio_tpg_shutdown_session()
1714  */
1715 static void lio_tpg_close_session(struct se_session *se_sess)
1716 {
1717         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1718         /*
1719          * If the iSCSI Session for the iSCSI Initiator Node exists,
1720          * forcefully shutdown the iSCSI NEXUS.
1721          */
1722         iscsit_stop_session(sess, 1, 1);
1723         iscsit_dec_session_usage_count(sess);
1724         iscsit_close_session(sess);
1725 }
1726
1727 static void lio_tpg_stop_session(
1728         struct se_session *se_sess,
1729         int sess_sleep,
1730         int conn_sleep)
1731 {
1732         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1733
1734         iscsit_stop_session(sess, sess_sleep, conn_sleep);
1735 }
1736
1737 static void lio_tpg_fall_back_to_erl0(struct se_session *se_sess)
1738 {
1739         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1740
1741         iscsit_fall_back_to_erl0(sess);
1742 }
1743
1744 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1745 {
1746         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1747
1748         return tpg->tpg_tiqn->tiqn_index;
1749 }
1750
1751 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1752 {
1753         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1754                                 se_node_acl);
1755
1756         ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1757         iscsit_set_default_node_attribues(acl);
1758 }
1759
1760 static void lio_release_cmd(struct se_cmd *se_cmd)
1761 {
1762         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1763
1764         iscsit_release_cmd(cmd);
1765 }
1766
1767 /* End functions for target_core_fabric_ops */
1768
1769 int iscsi_target_register_configfs(void)
1770 {
1771         struct target_fabric_configfs *fabric;
1772         int ret;
1773
1774         lio_target_fabric_configfs = NULL;
1775         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1776         if (IS_ERR(fabric)) {
1777                 pr_err("target_fabric_configfs_init() for"
1778                                 " LIO-Target failed!\n");
1779                 return PTR_ERR(fabric);
1780         }
1781         /*
1782          * Setup the fabric API of function pointers used by target_core_mod..
1783          */
1784         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1785         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1786         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1787         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1788         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1789         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1790         fabric->tf_ops.tpg_get_pr_transport_id_len =
1791                                 &iscsi_get_pr_transport_id_len;
1792         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1793                                 &iscsi_parse_pr_out_transport_id;
1794         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1795         fabric->tf_ops.tpg_check_demo_mode_cache =
1796                                 &lio_tpg_check_demo_mode_cache;
1797         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1798                                 &lio_tpg_check_demo_mode_write_protect;
1799         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1800                                 &lio_tpg_check_prod_mode_write_protect;
1801         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1802         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1803         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1804         fabric->tf_ops.release_cmd = &lio_release_cmd;
1805         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1806         fabric->tf_ops.close_session = &lio_tpg_close_session;
1807         fabric->tf_ops.stop_session = &lio_tpg_stop_session;
1808         fabric->tf_ops.fall_back_to_erl0 = &lio_tpg_fall_back_to_erl0;
1809         fabric->tf_ops.sess_logged_in = &lio_sess_logged_in;
1810         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1811         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1812         fabric->tf_ops.write_pending = &lio_write_pending;
1813         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1814         fabric->tf_ops.set_default_node_attributes =
1815                                 &lio_set_default_node_attributes;
1816         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1817         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1818         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1819         fabric->tf_ops.queue_status = &lio_queue_status;
1820         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1821         fabric->tf_ops.set_fabric_sense_len = &lio_set_fabric_sense_len;
1822         fabric->tf_ops.get_fabric_sense_len = &lio_get_fabric_sense_len;
1823         fabric->tf_ops.is_state_remove = &iscsi_is_state_remove;
1824         /*
1825          * Setup function pointers for generic logic in target_core_fabric_configfs.c
1826          */
1827         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1828         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1829         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1830         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1831         fabric->tf_ops.fabric_post_link = NULL;
1832         fabric->tf_ops.fabric_pre_unlink = NULL;
1833         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1834         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1835         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1836         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1837         /*
1838          * Setup default attribute lists for various fabric->tf_cit_tmpl
1839          * sturct config_item_type's
1840          */
1841         TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1842         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1843         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1844         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1845         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1846         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1847         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1848         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1849         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1850         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
1851
1852         ret = target_fabric_configfs_register(fabric);
1853         if (ret < 0) {
1854                 pr_err("target_fabric_configfs_register() for"
1855                                 " LIO-Target failed!\n");
1856                 target_fabric_configfs_free(fabric);
1857                 return ret;
1858         }
1859
1860         lio_target_fabric_configfs = fabric;
1861         pr_debug("LIO_TARGET[0] - Set fabric ->"
1862                         " lio_target_fabric_configfs\n");
1863         return 0;
1864 }
1865
1866
1867 void iscsi_target_deregister_configfs(void)
1868 {
1869         if (!lio_target_fabric_configfs)
1870                 return;
1871         /*
1872          * Shutdown discovery sessions and disable discovery TPG
1873          */
1874         if (iscsit_global->discovery_tpg)
1875                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
1876
1877         target_fabric_configfs_deregister(lio_target_fabric_configfs);
1878         lio_target_fabric_configfs = NULL;
1879         pr_debug("LIO_TARGET[0] - Cleared"
1880                                 " lio_target_fabric_configfs\n");
1881 }