Pileus Git - ~andy/linux/blob - 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 <linux/inet.h>
  25 #include <target/target_core_base.h>
  26 #include <target/target_core_fabric.h>
  27 #include <target/target_core_fabric_configfs.h>
  28 #include <target/target_core_configfs.h>
  29 #include <target/configfs_macros.h>
  30 #include <target/iscsi/iscsi_transport.h>
  31
  32 #include "iscsi_target_core.h"
  33 #include "iscsi_target_parameters.h"
  34 #include "iscsi_target_device.h"
  35 #include "iscsi_target_erl0.h"
  36 #include "iscsi_target_nodeattrib.h"
  37 #include "iscsi_target_tpg.h"
  38 #include "iscsi_target_util.h"
  39 #include "iscsi_target.h"
  40 #include "iscsi_target_stat.h"
  41 #include "iscsi_target_configfs.h"
  42
  43 struct target_fabric_configfs *lio_target_fabric_configfs;
  44
  45 struct lio_target_configfs_attribute {
  46         struct configfs_attribute attr;
  47         ssize_t (*show)(void *, char *);
  48         ssize_t (*store)(void *, const char *, size_t);
  49 };
  50
  51 /* Start items for lio_target_portal_cit */
  52
  53 static ssize_t lio_target_np_show_sctp(
  54         struct se_tpg_np *se_tpg_np,
  55         char *page)
  56 {
  57         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  58                                 struct iscsi_tpg_np, se_tpg_np);
  59         struct iscsi_tpg_np *tpg_np_sctp;
  60         ssize_t rb;
  61
  62         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  63         if (tpg_np_sctp)
  64                 rb = sprintf(page, "1\n");
  65         else
  66                 rb = sprintf(page, "0\n");
  67
  68         return rb;
  69 }
  70
  71 static ssize_t lio_target_np_store_sctp(
  72         struct se_tpg_np *se_tpg_np,
  73         const char *page,
  74         size_t count)
  75 {
  76         struct iscsi_np *np;
  77         struct iscsi_portal_group *tpg;
  78         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  79                                 struct iscsi_tpg_np, se_tpg_np);
  80         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  81         char *endptr;
  82         u32 op;
  83         int ret;
  84
  85         op = simple_strtoul(page, &endptr, 0);
  86         if ((op != 1) && (op != 0)) {
  87                 pr_err("Illegal value for tpg_enable: %u\n", op);
  88                 return -EINVAL;
  89         }
  90         np = tpg_np->tpg_np;
  91         if (!np) {
  92                 pr_err("Unable to locate struct iscsi_np from"
  93                                 " struct iscsi_tpg_np\n");
  94                 return -EINVAL;
  95         }
  96
  97         tpg = tpg_np->tpg;
  98         if (iscsit_get_tpg(tpg) < 0)
  99                 return -EINVAL;
 100
 101         if (op) {
 102                 /*
 103                  * Use existing np->np_sockaddr for SCTP network portal reference
 104                  */
 105                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 106                                         np->np_ip, tpg_np, ISCSI_SCTP_TCP);
 107                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 108                         goto out;
 109         } else {
 110                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 111                 if (!tpg_np_sctp)
 112                         goto out;
 113
 114                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 115                 if (ret < 0)
 116                         goto out;
 117         }
 118
 119         iscsit_put_tpg(tpg);
 120         return count;
 121 out:
 122         iscsit_put_tpg(tpg);
 123         return -EINVAL;
 124 }
 125
 126 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 127
 128 static ssize_t lio_target_np_show_iser(
 129         struct se_tpg_np *se_tpg_np,
 130         char *page)
 131 {
 132         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 133                                 struct iscsi_tpg_np, se_tpg_np);
 134         struct iscsi_tpg_np *tpg_np_iser;
 135         ssize_t rb;
 136
 137         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 138         if (tpg_np_iser)
 139                 rb = sprintf(page, "1\n");
 140         else
 141                 rb = sprintf(page, "0\n");
 142
 143         return rb;
 144 }
 145
 146 static ssize_t lio_target_np_store_iser(
 147         struct se_tpg_np *se_tpg_np,
 148         const char *page,
 149         size_t count)
 150 {
 151         struct iscsi_np *np;
 152         struct iscsi_portal_group *tpg;
 153         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 154                                 struct iscsi_tpg_np, se_tpg_np);
 155         struct iscsi_tpg_np *tpg_np_iser = NULL;
 156         char *endptr;
 157         u32 op;
 158         int rc;
 159
 160         op = simple_strtoul(page, &endptr, 0);
 161         if ((op != 1) && (op != 0)) {
 162                 pr_err("Illegal value for tpg_enable: %u\n", op);
 163                 return -EINVAL;
 164         }
 165         np = tpg_np->tpg_np;
 166         if (!np) {
 167                 pr_err("Unable to locate struct iscsi_np from"
 168                                 " struct iscsi_tpg_np\n");
 169                 return -EINVAL;
 170         }
 171
 172         tpg = tpg_np->tpg;
 173         if (iscsit_get_tpg(tpg) < 0)
 174                 return -EINVAL;
 175
 176         if (op) {
 177                 int rc = request_module("ib_isert");
 178                 if (rc != 0)
 179                         pr_warn("Unable to request_module for ib_isert\n");
 180
 181                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 182                                 np->np_ip, tpg_np, ISCSI_INFINIBAND);
 183                 if (!tpg_np_iser || IS_ERR(tpg_np_iser))
 184                         goto out;
 185         } else {
 186                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 187                 if (!tpg_np_iser)
 188                         goto out;
 189
 190                 rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 191                 if (rc < 0)
 192                         goto out;
 193         }
 194
 195         printk("lio_target_np_store_iser() done, op: %d\n", op);
 196
 197         iscsit_put_tpg(tpg);
 198         return count;
 199 out:
 200         iscsit_put_tpg(tpg);
 201         return -EINVAL;
 202 }
 203
 204 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 205
 206 static struct configfs_attribute *lio_target_portal_attrs[] = {
 207         &lio_target_np_sctp.attr,
 208         &lio_target_np_iser.attr,
 209         NULL,
 210 };
 211
 212 /* Stop items for lio_target_portal_cit */
 213
 214 /* Start items for lio_target_np_cit */
 215
 216 #define MAX_PORTAL_LEN          256
 217
 218 static struct se_tpg_np *lio_target_call_addnptotpg(
 219         struct se_portal_group *se_tpg,
 220         struct config_group *group,
 221         const char *name)
 222 {
 223         struct iscsi_portal_group *tpg;
 224         struct iscsi_tpg_np *tpg_np;
 225         char *str, *str2, *ip_str, *port_str;
 226         struct __kernel_sockaddr_storage sockaddr;
 227         struct sockaddr_in *sock_in;
 228         struct sockaddr_in6 *sock_in6;
 229         unsigned long port;
 230         int ret;
 231         char buf[MAX_PORTAL_LEN + 1];
 232
 233         if (strlen(name) > MAX_PORTAL_LEN) {
 234                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 235                         (int)strlen(name), MAX_PORTAL_LEN);
 236                 return ERR_PTR(-EOVERFLOW);
 237         }
 238         memset(buf, 0, MAX_PORTAL_LEN + 1);
 239         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 240
 241         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 242
 243         str = strstr(buf, "[");
 244         if (str) {
 245                 const char *end;
 246
 247                 str2 = strstr(str, "]");
 248                 if (!str2) {
 249                         pr_err("Unable to locate trailing \"]\""
 250                                 " in IPv6 iSCSI network portal address\n");
 251                         return ERR_PTR(-EINVAL);
 252                 }
 253                 str++; /* Skip over leading "[" */
 254                 *str2 = '\0'; /* Terminate the IPv6 address */
 255                 str2++; /* Skip over the "]" */
 256                 port_str = strstr(str2, ":");
 257                 if (!port_str) {
 258                         pr_err("Unable to locate \":port\""
 259                                 " in IPv6 iSCSI network portal address\n");
 260                         return ERR_PTR(-EINVAL);
 261                 }
 262                 *port_str = '\0'; /* Terminate string for IP */
 263                 port_str++; /* Skip over ":" */
 264
 265                 ret = strict_strtoul(port_str, 0, &port);
 266                 if (ret < 0) {
 267                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 268                         return ERR_PTR(ret);
 269                 }
 270                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 271                 sock_in6->sin6_family = AF_INET6;
 272                 sock_in6->sin6_port = htons((unsigned short)port);
 273                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 274                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 275                 if (ret <= 0) {
 276                         pr_err("in6_pton returned: %d\n", ret);
 277                         return ERR_PTR(-EINVAL);
 278                 }
 279         } else {
 280                 str = ip_str = &buf[0];
 281                 port_str = strstr(ip_str, ":");
 282                 if (!port_str) {
 283                         pr_err("Unable to locate \":port\""
 284                                 " in IPv4 iSCSI network portal address\n");
 285                         return ERR_PTR(-EINVAL);
 286                 }
 287                 *port_str = '\0'; /* Terminate string for IP */
 288                 port_str++; /* Skip over ":" */
 289
 290                 ret = strict_strtoul(port_str, 0, &port);
 291                 if (ret < 0) {
 292                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 293                         return ERR_PTR(ret);
 294                 }
 295                 sock_in = (struct sockaddr_in *)&sockaddr;
 296                 sock_in->sin_family = AF_INET;
 297                 sock_in->sin_port = htons((unsigned short)port);
 298                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 299         }
 300         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 301         ret = iscsit_get_tpg(tpg);
 302         if (ret < 0)
 303                 return ERR_PTR(-EINVAL);
 304
 305         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 306                 " PORTAL: %s\n",
 307                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 308                 tpg->tpgt, name);
 309         /*
 310          * Assume ISCSI_TCP by default.  Other network portals for other
 311          * iSCSI fabrics:
 312          *
 313          * Traditional iSCSI over SCTP (initial support)
 314          * iSER/TCP (TODO, hardware available)
 315          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 316          * iSER/IB (TODO, hardware available)
 317          *
 318          * can be enabled with attributes under
 319          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 320          *
 321          */
 322         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 323                                 ISCSI_TCP);
 324         if (IS_ERR(tpg_np)) {
 325                 iscsit_put_tpg(tpg);
 326                 return ERR_CAST(tpg_np);
 327         }
 328         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 329
 330         iscsit_put_tpg(tpg);
 331         return &tpg_np->se_tpg_np;
 332 }
 333
 334 static void lio_target_call_delnpfromtpg(
 335         struct se_tpg_np *se_tpg_np)
 336 {
 337         struct iscsi_portal_group *tpg;
 338         struct iscsi_tpg_np *tpg_np;
 339         struct se_portal_group *se_tpg;
 340         int ret;
 341
 342         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 343         tpg = tpg_np->tpg;
 344         ret = iscsit_get_tpg(tpg);
 345         if (ret < 0)
 346                 return;
 347
 348         se_tpg = &tpg->tpg_se_tpg;
 349         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 350                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 351                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 352
 353         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 354         if (ret < 0)
 355                 goto out;
 356
 357         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 358 out:
 359         iscsit_put_tpg(tpg);
 360 }
 361
 362 /* End items for lio_target_np_cit */
 363
 364 /* Start items for lio_target_nacl_attrib_cit */
 365
 366 #define DEF_NACL_ATTRIB(name)                                           \
 367 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 368         struct se_node_acl *se_nacl,                                    \
 369         char *page)                                                     \
 370 {                                                                       \
 371         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 372                                         se_node_acl);                   \
 373                                                                         \
 374         return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name);    \
 375 }                                                                       \
 376                                                                         \
 377 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 378         struct se_node_acl *se_nacl,                                    \
 379         const char *page,                                               \
 380         size_t count)                                                   \
 381 {                                                                       \
 382         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 383                                         se_node_acl);                   \
 384         char *endptr;                                                   \
 385         u32 val;                                                        \
 386         int ret;                                                        \
 387                                                                         \
 388         val = simple_strtoul(page, &endptr, 0);                         \
 389         ret = iscsit_na_##name(nacl, val);                              \
 390         if (ret < 0)                                                    \
 391                 return ret;                                             \
 392                                                                         \
 393         return count;                                                   \
 394 }
 395
 396 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 397 /*
 398  * Define iscsi_node_attrib_s_dataout_timeout
 399  */
 400 DEF_NACL_ATTRIB(dataout_timeout);
 401 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 402 /*
 403  * Define iscsi_node_attrib_s_dataout_timeout_retries
 404  */
 405 DEF_NACL_ATTRIB(dataout_timeout_retries);
 406 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 407 /*
 408  * Define iscsi_node_attrib_s_default_erl
 409  */
 410 DEF_NACL_ATTRIB(default_erl);
 411 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 412 /*
 413  * Define iscsi_node_attrib_s_nopin_timeout
 414  */
 415 DEF_NACL_ATTRIB(nopin_timeout);
 416 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 417 /*
 418  * Define iscsi_node_attrib_s_nopin_response_timeout
 419  */
 420 DEF_NACL_ATTRIB(nopin_response_timeout);
 421 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 422 /*
 423  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 424  */
 425 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 426 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 427 /*
 428  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 429  */
 430 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 431 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 432 /*
 433  * Define iscsi_node_attrib_s_random_r2t_offsets
 434  */
 435 DEF_NACL_ATTRIB(random_r2t_offsets);
 436 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 437
 438 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 439         &iscsi_nacl_attrib_dataout_timeout.attr,
 440         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 441         &iscsi_nacl_attrib_default_erl.attr,
 442         &iscsi_nacl_attrib_nopin_timeout.attr,
 443         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 444         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 445         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 446         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 447         NULL,
 448 };
 449
 450 /* End items for lio_target_nacl_attrib_cit */
 451
 452 /* Start items for lio_target_nacl_auth_cit */
 453
 454 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 455 static ssize_t __iscsi_##prefix##_show_##name(                          \
 456         struct iscsi_node_acl *nacl,                                    \
 457         char *page)                                                     \
 458 {                                                                       \
 459         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 460                                                                         \
 461         if (!capable(CAP_SYS_ADMIN))                                    \
 462                 return -EPERM;                                          \
 463         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 464 }                                                                       \
 465                                                                         \
 466 static ssize_t __iscsi_##prefix##_store_##name(                         \
 467         struct iscsi_node_acl *nacl,                                    \
 468         const char *page,                                               \
 469         size_t count)                                                   \
 470 {                                                                       \
 471         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 472                                                                         \
 473         if (!capable(CAP_SYS_ADMIN))                                    \
 474                 return -EPERM;                                          \
 475                                                                         \
 476         snprintf(auth->name, PAGE_SIZE, "%s", page);                    \
 477         if (!strncmp("NULL", auth->name, 4))                            \
 478                 auth->naf_flags &= ~flags;                              \
 479         else                                                            \
 480                 auth->naf_flags |= flags;                               \
 481                                                                         \
 482         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 483             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 484                 auth->authenticate_target = 1;                          \
 485         else                                                            \
 486                 auth->authenticate_target = 0;                          \
 487                                                                         \
 488         return count;                                                   \
 489 }
 490
 491 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 492 static ssize_t __iscsi_##prefix##_show_##name(                          \
 493         struct iscsi_node_acl *nacl,                                    \
 494         char *page)                                                     \
 495 {                                                                       \
 496         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 497                                                                         \
 498         if (!capable(CAP_SYS_ADMIN))                                    \
 499                 return -EPERM;                                          \
 500                                                                         \
 501         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 502 }
 503
 504 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 505         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 506 static ssize_t iscsi_nacl_auth_show_##name(                             \
 507         struct se_node_acl *nacl,                                       \
 508         char *page)                                                     \
 509 {                                                                       \
 510         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 511                         struct iscsi_node_acl, se_node_acl), page);             \
 512 }                                                                       \
 513 static ssize_t iscsi_nacl_auth_store_##name(                            \
 514         struct se_node_acl *nacl,                                       \
 515         const char *page,                                               \
 516         size_t count)                                                   \
 517 {                                                                       \
 518         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 519                         struct iscsi_node_acl, se_node_acl), page, count);      \
 520 }
 521
 522 #define DEF_NACL_AUTH_INT(name)                                         \
 523         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 524 static ssize_t iscsi_nacl_auth_show_##name(                             \
 525         struct se_node_acl *nacl,                                       \
 526         char *page)                                                     \
 527 {                                                                       \
 528         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 529                         struct iscsi_node_acl, se_node_acl), page);             \
 530 }
 531
 532 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 533 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 534
 535 /*
 536  * One-way authentication userid
 537  */
 538 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 539 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 540 /*
 541  * One-way authentication password
 542  */
 543 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 544 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 545 /*
 546  * Enforce mutual authentication
 547  */
 548 DEF_NACL_AUTH_INT(authenticate_target);
 549 AUTH_ATTR_RO(authenticate_target);
 550 /*
 551  * Mutual authentication userid
 552  */
 553 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 554 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 555 /*
 556  * Mutual authentication password
 557  */
 558 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 559 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 560
 561 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 562         &iscsi_nacl_auth_userid.attr,
 563         &iscsi_nacl_auth_password.attr,
 564         &iscsi_nacl_auth_authenticate_target.attr,
 565         &iscsi_nacl_auth_userid_mutual.attr,
 566         &iscsi_nacl_auth_password_mutual.attr,
 567         NULL,
 568 };
 569
 570 /* End items for lio_target_nacl_auth_cit */
 571
 572 /* Start items for lio_target_nacl_param_cit */
 573
 574 #define DEF_NACL_PARAM(name)                                            \
 575 static ssize_t iscsi_nacl_param_show_##name(                            \
 576         struct se_node_acl *se_nacl,                                    \
 577         char *page)                                                     \
 578 {                                                                       \
 579         struct iscsi_session *sess;                                     \
 580         struct se_session *se_sess;                                     \
 581         ssize_t rb;                                                     \
 582                                                                         \
 583         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 584         se_sess = se_nacl->nacl_sess;                                   \
 585         if (!se_sess) {                                                 \
 586                 rb = snprintf(page, PAGE_SIZE,                          \
 587                         "No Active iSCSI Session\n");                   \
 588         } else {                                                        \
 589                 sess = se_sess->fabric_sess_ptr;                        \
 590                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 591                         (u32)sess->sess_ops->name);                     \
 592         }                                                               \
 593         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 594                                                                         \
 595         return rb;                                                      \
 596 }
 597
 598 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 599
 600 DEF_NACL_PARAM(MaxConnections);
 601 NACL_PARAM_ATTR(MaxConnections);
 602
 603 DEF_NACL_PARAM(InitialR2T);
 604 NACL_PARAM_ATTR(InitialR2T);
 605
 606 DEF_NACL_PARAM(ImmediateData);
 607 NACL_PARAM_ATTR(ImmediateData);
 608
 609 DEF_NACL_PARAM(MaxBurstLength);
 610 NACL_PARAM_ATTR(MaxBurstLength);
 611
 612 DEF_NACL_PARAM(FirstBurstLength);
 613 NACL_PARAM_ATTR(FirstBurstLength);
 614
 615 DEF_NACL_PARAM(DefaultTime2Wait);
 616 NACL_PARAM_ATTR(DefaultTime2Wait);
 617
 618 DEF_NACL_PARAM(DefaultTime2Retain);
 619 NACL_PARAM_ATTR(DefaultTime2Retain);
 620
 621 DEF_NACL_PARAM(MaxOutstandingR2T);
 622 NACL_PARAM_ATTR(MaxOutstandingR2T);
 623
 624 DEF_NACL_PARAM(DataPDUInOrder);
 625 NACL_PARAM_ATTR(DataPDUInOrder);
 626
 627 DEF_NACL_PARAM(DataSequenceInOrder);
 628 NACL_PARAM_ATTR(DataSequenceInOrder);
 629
 630 DEF_NACL_PARAM(ErrorRecoveryLevel);
 631 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 632
 633 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 634         &iscsi_nacl_param_MaxConnections.attr,
 635         &iscsi_nacl_param_InitialR2T.attr,
 636         &iscsi_nacl_param_ImmediateData.attr,
 637         &iscsi_nacl_param_MaxBurstLength.attr,
 638         &iscsi_nacl_param_FirstBurstLength.attr,
 639         &iscsi_nacl_param_DefaultTime2Wait.attr,
 640         &iscsi_nacl_param_DefaultTime2Retain.attr,
 641         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 642         &iscsi_nacl_param_DataPDUInOrder.attr,
 643         &iscsi_nacl_param_DataSequenceInOrder.attr,
 644         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 645         NULL,
 646 };
 647
 648 /* End items for lio_target_nacl_param_cit */
 649
 650 /* Start items for lio_target_acl_cit */
 651
 652 static ssize_t lio_target_nacl_show_info(
 653         struct se_node_acl *se_nacl,
 654         char *page)
 655 {
 656         struct iscsi_session *sess;
 657         struct iscsi_conn *conn;
 658         struct se_session *se_sess;
 659         ssize_t rb = 0;
 660
 661         spin_lock_bh(&se_nacl->nacl_sess_lock);
 662         se_sess = se_nacl->nacl_sess;
 663         if (!se_sess) {
 664                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 665                         " Endpoint: %s\n", se_nacl->initiatorname);
 666         } else {
 667                 sess = se_sess->fabric_sess_ptr;
 668
 669                 if (sess->sess_ops->InitiatorName)
 670                         rb += sprintf(page+rb, "InitiatorName: %s\n",
 671                                 sess->sess_ops->InitiatorName);
 672                 if (sess->sess_ops->InitiatorAlias)
 673                         rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 674                                 sess->sess_ops->InitiatorAlias);
 675
 676                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 677                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 678                         "TSIH: %hu  ", sess->sid,
 679                         sess->isid[0], sess->isid[1], sess->isid[2],
 680                         sess->isid[3], sess->isid[4], sess->isid[5],
 681                         sess->tsih);
 682                 rb += sprintf(page+rb, "SessionType: %s\n",
 683                                 (sess->sess_ops->SessionType) ?
 684                                 "Discovery" : "Normal");
 685                 rb += sprintf(page+rb, "Session State: ");
 686                 switch (sess->session_state) {
 687                 case TARG_SESS_STATE_FREE:
 688                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 689                         break;
 690                 case TARG_SESS_STATE_ACTIVE:
 691                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 692                         break;
 693                 case TARG_SESS_STATE_LOGGED_IN:
 694                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 695                         break;
 696                 case TARG_SESS_STATE_FAILED:
 697                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 698                         break;
 699                 case TARG_SESS_STATE_IN_CONTINUE:
 700                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 701                         break;
 702                 default:
 703                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 704                                         " State!\n");
 705                         break;
 706                 }
 707
 708                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 709                                 " Values]-----------------------\n");
 710                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 711                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 712                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 713                                 "   0x%08x   0x%08x\n",
 714                         sess->cmdsn_window,
 715                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 716                         sess->exp_cmd_sn, sess->max_cmd_sn,
 717                         sess->init_task_tag, sess->targ_xfer_tag);
 718                 rb += sprintf(page+rb, "----------------------[iSCSI"
 719                                 " Connections]-------------------------\n");
 720
 721                 spin_lock(&sess->conn_lock);
 722                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 723                         rb += sprintf(page+rb, "CID: %hu  Connection"
 724                                         " State: ", conn->cid);
 725                         switch (conn->conn_state) {
 726                         case TARG_CONN_STATE_FREE:
 727                                 rb += sprintf(page+rb,
 728                                         "TARG_CONN_STATE_FREE\n");
 729                                 break;
 730                         case TARG_CONN_STATE_XPT_UP:
 731                                 rb += sprintf(page+rb,
 732                                         "TARG_CONN_STATE_XPT_UP\n");
 733                                 break;
 734                         case TARG_CONN_STATE_IN_LOGIN:
 735                                 rb += sprintf(page+rb,
 736                                         "TARG_CONN_STATE_IN_LOGIN\n");
 737                                 break;
 738                         case TARG_CONN_STATE_LOGGED_IN:
 739                                 rb += sprintf(page+rb,
 740                                         "TARG_CONN_STATE_LOGGED_IN\n");
 741                                 break;
 742                         case TARG_CONN_STATE_IN_LOGOUT:
 743                                 rb += sprintf(page+rb,
 744                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 745                                 break;
 746                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 747                                 rb += sprintf(page+rb,
 748                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 749                                 break;
 750                         case TARG_CONN_STATE_CLEANUP_WAIT:
 751                                 rb += sprintf(page+rb,
 752                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 753                                 break;
 754                         default:
 755                                 rb += sprintf(page+rb,
 756                                         "ERROR: Unknown Connection State!\n");
 757                                 break;
 758                         }
 759
 760                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 761                                 (conn->network_transport == ISCSI_TCP) ?
 762                                 "TCP" : "SCTP");
 763                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 764                                 conn->stat_sn);
 765                 }
 766                 spin_unlock(&sess->conn_lock);
 767         }
 768         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 769
 770         return rb;
 771 }
 772
 773 TF_NACL_BASE_ATTR_RO(lio_target, info);
 774
 775 static ssize_t lio_target_nacl_show_cmdsn_depth(
 776         struct se_node_acl *se_nacl,
 777         char *page)
 778 {
 779         return sprintf(page, "%u\n", se_nacl->queue_depth);
 780 }
 781
 782 static ssize_t lio_target_nacl_store_cmdsn_depth(
 783         struct se_node_acl *se_nacl,
 784         const char *page,
 785         size_t count)
 786 {
 787         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 788         struct iscsi_portal_group *tpg = container_of(se_tpg,
 789                         struct iscsi_portal_group, tpg_se_tpg);
 790         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 791         char *endptr;
 792         u32 cmdsn_depth = 0;
 793         int ret;
 794
 795         cmdsn_depth = simple_strtoul(page, &endptr, 0);
 796         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 797                 pr_err("Passed cmdsn_depth: %u exceeds"
 798                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 799                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 800                 return -EINVAL;
 801         }
 802         acl_ci = &se_nacl->acl_group.cg_item;
 803         if (!acl_ci) {
 804                 pr_err("Unable to locatel acl_ci\n");
 805                 return -EINVAL;
 806         }
 807         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 808         if (!tpg_ci) {
 809                 pr_err("Unable to locate tpg_ci\n");
 810                 return -EINVAL;
 811         }
 812         wwn_ci = &tpg_ci->ci_group->cg_item;
 813         if (!wwn_ci) {
 814                 pr_err("Unable to locate config_item wwn_ci\n");
 815                 return -EINVAL;
 816         }
 817
 818         if (iscsit_get_tpg(tpg) < 0)
 819                 return -EINVAL;
 820         /*
 821          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 822          */
 823         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 824                                 config_item_name(acl_ci), cmdsn_depth, 1);
 825
 826         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 827                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 828                 config_item_name(tpg_ci), cmdsn_depth,
 829                 config_item_name(acl_ci));
 830
 831         iscsit_put_tpg(tpg);
 832         return (!ret) ? count : (ssize_t)ret;
 833 }
 834
 835 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 836
 837 static ssize_t lio_target_nacl_show_tag(
 838         struct se_node_acl *se_nacl,
 839         char *page)
 840 {
 841         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 842 }
 843
 844 static ssize_t lio_target_nacl_store_tag(
 845         struct se_node_acl *se_nacl,
 846         const char *page,
 847         size_t count)
 848 {
 849         int ret;
 850
 851         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 852
 853         if (ret < 0)
 854                 return ret;
 855         return count;
 856 }
 857
 858 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 859
 860 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 861         &lio_target_nacl_info.attr,
 862         &lio_target_nacl_cmdsn_depth.attr,
 863         &lio_target_nacl_tag.attr,
 864         NULL,
 865 };
 866
 867 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 868         struct se_portal_group *se_tpg)
 869 {
 870         struct iscsi_node_acl *acl;
 871
 872         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 873         if (!acl) {
 874                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 875                 return NULL;
 876         }
 877
 878         return &acl->se_node_acl;
 879 }
 880
 881 static struct se_node_acl *lio_target_make_nodeacl(
 882         struct se_portal_group *se_tpg,
 883         struct config_group *group,
 884         const char *name)
 885 {
 886         struct config_group *stats_cg;
 887         struct iscsi_node_acl *acl;
 888         struct se_node_acl *se_nacl_new, *se_nacl;
 889         struct iscsi_portal_group *tpg = container_of(se_tpg,
 890                         struct iscsi_portal_group, tpg_se_tpg);
 891         u32 cmdsn_depth;
 892
 893         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 894         if (!se_nacl_new)
 895                 return ERR_PTR(-ENOMEM);
 896
 897         cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
 898         /*
 899          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 900          * when converting a NdoeACL from demo mode -> explict
 901          */
 902         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 903                                 name, cmdsn_depth);
 904         if (IS_ERR(se_nacl))
 905                 return se_nacl;
 906
 907         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 908         stats_cg = &se_nacl->acl_fabric_stat_group;
 909
 910         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 911                                 GFP_KERNEL);
 912         if (!stats_cg->default_groups) {
 913                 pr_err("Unable to allocate memory for"
 914                                 " stats_cg->default_groups\n");
 915                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 916                 kfree(acl);
 917                 return ERR_PTR(-ENOMEM);
 918         }
 919
 920         stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
 921         stats_cg->default_groups[1] = NULL;
 922         config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
 923                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 924
 925         return se_nacl;
 926 }
 927
 928 static void lio_target_drop_nodeacl(
 929         struct se_node_acl *se_nacl)
 930 {
 931         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 932         struct iscsi_node_acl *acl = container_of(se_nacl,
 933                         struct iscsi_node_acl, se_node_acl);
 934         struct config_item *df_item;
 935         struct config_group *stats_cg;
 936         int i;
 937
 938         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 939         for (i = 0; stats_cg->default_groups[i]; i++) {
 940                 df_item = &stats_cg->default_groups[i]->cg_item;
 941                 stats_cg->default_groups[i] = NULL;
 942                 config_item_put(df_item);
 943         }
 944         kfree(stats_cg->default_groups);
 945
 946         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 947         kfree(acl);
 948 }
 949
 950 /* End items for lio_target_acl_cit */
 951
 952 /* Start items for lio_target_tpg_attrib_cit */
 953
 954 #define DEF_TPG_ATTRIB(name)                                            \
 955                                                                         \
 956 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 957         struct se_portal_group *se_tpg,                         \
 958         char *page)                                                     \
 959 {                                                                       \
 960         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 961                         struct iscsi_portal_group, tpg_se_tpg); \
 962         ssize_t rb;                                                     \
 963                                                                         \
 964         if (iscsit_get_tpg(tpg) < 0)                                    \
 965                 return -EINVAL;                                         \
 966                                                                         \
 967         rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name);        \
 968         iscsit_put_tpg(tpg);                                            \
 969         return rb;                                                      \
 970 }                                                                       \
 971                                                                         \
 972 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 973         struct se_portal_group *se_tpg,                         \
 974         const char *page,                                               \
 975         size_t count)                                                   \
 976 {                                                                       \
 977         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 978                         struct iscsi_portal_group, tpg_se_tpg); \
 979         char *endptr;                                                   \
 980         u32 val;                                                        \
 981         int ret;                                                        \
 982                                                                         \
 983         if (iscsit_get_tpg(tpg) < 0)                                    \
 984                 return -EINVAL;                                         \
 985                                                                         \
 986         val = simple_strtoul(page, &endptr, 0);                         \
 987         ret = iscsit_ta_##name(tpg, val);                               \
 988         if (ret < 0)                                                    \
 989                 goto out;                                               \
 990                                                                         \
 991         iscsit_put_tpg(tpg);                                            \
 992         return count;                                                   \
 993 out:                                                                    \
 994         iscsit_put_tpg(tpg);                                            \
 995         return ret;                                                     \
 996 }
 997
 998 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 999
1000 /*
1001  * Define iscsi_tpg_attrib_s_authentication
1002  */
1003 DEF_TPG_ATTRIB(authentication);
1004 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1005 /*
1006  * Define iscsi_tpg_attrib_s_login_timeout
1007  */
1008 DEF_TPG_ATTRIB(login_timeout);
1009 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1010 /*
1011  * Define iscsi_tpg_attrib_s_netif_timeout
1012  */
1013 DEF_TPG_ATTRIB(netif_timeout);
1014 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1015 /*
1016  * Define iscsi_tpg_attrib_s_generate_node_acls
1017  */
1018 DEF_TPG_ATTRIB(generate_node_acls);
1019 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1020 /*
1021  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1022  */
1023 DEF_TPG_ATTRIB(default_cmdsn_depth);
1024 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1025 /*
1026  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1027  */
1028 DEF_TPG_ATTRIB(cache_dynamic_acls);
1029 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1030 /*
1031  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1032  */
1033 DEF_TPG_ATTRIB(demo_mode_write_protect);
1034 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1035 /*
1036  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1037  */
1038 DEF_TPG_ATTRIB(prod_mode_write_protect);
1039 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1040
1041 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1042         &iscsi_tpg_attrib_authentication.attr,
1043         &iscsi_tpg_attrib_login_timeout.attr,
1044         &iscsi_tpg_attrib_netif_timeout.attr,
1045         &iscsi_tpg_attrib_generate_node_acls.attr,
1046         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1047         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1048         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1049         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1050         NULL,
1051 };
1052
1053 /* End items for lio_target_tpg_attrib_cit */
1054
1055 /* Start items for lio_target_tpg_param_cit */
1056
1057 #define DEF_TPG_PARAM(name)                                             \
1058 static ssize_t iscsi_tpg_param_show_##name(                             \
1059         struct se_portal_group *se_tpg,                                 \
1060         char *page)                                                     \
1061 {                                                                       \
1062         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1063                         struct iscsi_portal_group, tpg_se_tpg);         \
1064         struct iscsi_param *param;                                      \
1065         ssize_t rb;                                                     \
1066                                                                         \
1067         if (iscsit_get_tpg(tpg) < 0)                                    \
1068                 return -EINVAL;                                         \
1069                                                                         \
1070         param = iscsi_find_param_from_key(__stringify(name),            \
1071                                 tpg->param_list);                       \
1072         if (!param) {                                                   \
1073                 iscsit_put_tpg(tpg);                                    \
1074                 return -EINVAL;                                         \
1075         }                                                               \
1076         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1077                                                                         \
1078         iscsit_put_tpg(tpg);                                            \
1079         return rb;                                                      \
1080 }                                                                       \
1081 static ssize_t iscsi_tpg_param_store_##name(                            \
1082         struct se_portal_group *se_tpg,                         \
1083         const char *page,                                               \
1084         size_t count)                                                   \
1085 {                                                                       \
1086         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1087                         struct iscsi_portal_group, tpg_se_tpg);         \
1088         char *buf;                                                      \
1089         int ret;                                                        \
1090                                                                         \
1091         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1092         if (!buf)                                                       \
1093                 return -ENOMEM;                                         \
1094         snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);     \
1095         buf[strlen(buf)-1] = '\0'; /* Kill newline */                   \
1096                                                                         \
1097         if (iscsit_get_tpg(tpg) < 0) {                                  \
1098                 kfree(buf);                                             \
1099                 return -EINVAL;                                         \
1100         }                                                               \
1101                                                                         \
1102         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1103         if (ret < 0)                                                    \
1104                 goto out;                                               \
1105                                                                         \
1106         kfree(buf);                                                     \
1107         iscsit_put_tpg(tpg);                                            \
1108         return count;                                                   \
1109 out:                                                                    \
1110         kfree(buf);                                                     \
1111         iscsit_put_tpg(tpg);                                            \
1112         return -EINVAL;                                         \
1113 }
1114
1115 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1116
1117 DEF_TPG_PARAM(AuthMethod);
1118 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1119
1120 DEF_TPG_PARAM(HeaderDigest);
1121 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1122
1123 DEF_TPG_PARAM(DataDigest);
1124 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1125
1126 DEF_TPG_PARAM(MaxConnections);
1127 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1128
1129 DEF_TPG_PARAM(TargetAlias);
1130 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1131
1132 DEF_TPG_PARAM(InitialR2T);
1133 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1134
1135 DEF_TPG_PARAM(ImmediateData);
1136 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1137
1138 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1139 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1140
1141 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1142 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1143
1144 DEF_TPG_PARAM(MaxBurstLength);
1145 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1146
1147 DEF_TPG_PARAM(FirstBurstLength);
1148 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1149
1150 DEF_TPG_PARAM(DefaultTime2Wait);
1151 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1152
1153 DEF_TPG_PARAM(DefaultTime2Retain);
1154 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1155
1156 DEF_TPG_PARAM(MaxOutstandingR2T);
1157 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1158
1159 DEF_TPG_PARAM(DataPDUInOrder);
1160 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1161
1162 DEF_TPG_PARAM(DataSequenceInOrder);
1163 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1164
1165 DEF_TPG_PARAM(ErrorRecoveryLevel);
1166 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1167
1168 DEF_TPG_PARAM(IFMarker);
1169 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1170
1171 DEF_TPG_PARAM(OFMarker);
1172 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1173
1174 DEF_TPG_PARAM(IFMarkInt);
1175 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1176
1177 DEF_TPG_PARAM(OFMarkInt);
1178 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1179
1180 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1181         &iscsi_tpg_param_AuthMethod.attr,
1182         &iscsi_tpg_param_HeaderDigest.attr,
1183         &iscsi_tpg_param_DataDigest.attr,
1184         &iscsi_tpg_param_MaxConnections.attr,
1185         &iscsi_tpg_param_TargetAlias.attr,
1186         &iscsi_tpg_param_InitialR2T.attr,
1187         &iscsi_tpg_param_ImmediateData.attr,
1188         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1189         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1190         &iscsi_tpg_param_MaxBurstLength.attr,
1191         &iscsi_tpg_param_FirstBurstLength.attr,
1192         &iscsi_tpg_param_DefaultTime2Wait.attr,
1193         &iscsi_tpg_param_DefaultTime2Retain.attr,
1194         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1195         &iscsi_tpg_param_DataPDUInOrder.attr,
1196         &iscsi_tpg_param_DataSequenceInOrder.attr,
1197         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1198         &iscsi_tpg_param_IFMarker.attr,
1199         &iscsi_tpg_param_OFMarker.attr,
1200         &iscsi_tpg_param_IFMarkInt.attr,
1201         &iscsi_tpg_param_OFMarkInt.attr,
1202         NULL,
1203 };
1204
1205 /* End items for lio_target_tpg_param_cit */
1206
1207 /* Start items for lio_target_tpg_cit */
1208
1209 static ssize_t lio_target_tpg_show_enable(
1210         struct se_portal_group *se_tpg,
1211         char *page)
1212 {
1213         struct iscsi_portal_group *tpg = container_of(se_tpg,
1214                         struct iscsi_portal_group, tpg_se_tpg);
1215         ssize_t len;
1216
1217         spin_lock(&tpg->tpg_state_lock);
1218         len = sprintf(page, "%d\n",
1219                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1220         spin_unlock(&tpg->tpg_state_lock);
1221
1222         return len;
1223 }
1224
1225 static ssize_t lio_target_tpg_store_enable(
1226         struct se_portal_group *se_tpg,
1227         const char *page,
1228         size_t count)
1229 {
1230         struct iscsi_portal_group *tpg = container_of(se_tpg,
1231                         struct iscsi_portal_group, tpg_se_tpg);
1232         char *endptr;
1233         u32 op;
1234         int ret = 0;
1235
1236         op = simple_strtoul(page, &endptr, 0);
1237         if ((op != 1) && (op != 0)) {
1238                 pr_err("Illegal value for tpg_enable: %u\n", op);
1239                 return -EINVAL;
1240         }
1241
1242         ret = iscsit_get_tpg(tpg);
1243         if (ret < 0)
1244                 return -EINVAL;
1245
1246         if (op) {
1247                 ret = iscsit_tpg_enable_portal_group(tpg);
1248                 if (ret < 0)
1249                         goto out;
1250         } else {
1251                 /*
1252                  * iscsit_tpg_disable_portal_group() assumes force=1
1253                  */
1254                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1255                 if (ret < 0)
1256                         goto out;
1257         }
1258
1259         iscsit_put_tpg(tpg);
1260         return count;
1261 out:
1262         iscsit_put_tpg(tpg);
1263         return -EINVAL;
1264 }
1265
1266 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1267
1268 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1269         &lio_target_tpg_enable.attr,
1270         NULL,
1271 };
1272
1273 /* End items for lio_target_tpg_cit */
1274
1275 /* Start items for lio_target_tiqn_cit */
1276
1277 static struct se_portal_group *lio_target_tiqn_addtpg(
1278         struct se_wwn *wwn,
1279         struct config_group *group,
1280         const char *name)
1281 {
1282         struct iscsi_portal_group *tpg;
1283         struct iscsi_tiqn *tiqn;
1284         char *tpgt_str, *end_ptr;
1285         int ret = 0;
1286         unsigned short int tpgt;
1287
1288         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1289         /*
1290          * Only tpgt_# directory groups can be created below
1291          * target/iscsi/iqn.superturodiskarry/
1292         */
1293         tpgt_str = strstr(name, "tpgt_");
1294         if (!tpgt_str) {
1295                 pr_err("Unable to locate \"tpgt_#\" directory"
1296                                 " group\n");
1297                 return NULL;
1298         }
1299         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1300         tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1301
1302         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1303         if (!tpg)
1304                 return NULL;
1305
1306         ret = core_tpg_register(
1307                         &lio_target_fabric_configfs->tf_ops,
1308                         wwn, &tpg->tpg_se_tpg, tpg,
1309                         TRANSPORT_TPG_TYPE_NORMAL);
1310         if (ret < 0)
1311                 return NULL;
1312
1313         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1314         if (ret != 0)
1315                 goto out;
1316
1317         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1318         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1319                         name);
1320         return &tpg->tpg_se_tpg;
1321 out:
1322         core_tpg_deregister(&tpg->tpg_se_tpg);
1323         kfree(tpg);
1324         return NULL;
1325 }
1326
1327 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1328 {
1329         struct iscsi_portal_group *tpg;
1330         struct iscsi_tiqn *tiqn;
1331
1332         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1333         tiqn = tpg->tpg_tiqn;
1334         /*
1335          * iscsit_tpg_del_portal_group() assumes force=1
1336          */
1337         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1338         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1339 }
1340
1341 /* End items for lio_target_tiqn_cit */
1342
1343 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1344
1345 static ssize_t lio_target_wwn_show_attr_lio_version(
1346         struct target_fabric_configfs *tf,
1347         char *page)
1348 {
1349         return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1350 }
1351
1352 TF_WWN_ATTR_RO(lio_target, lio_version);
1353
1354 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1355         &lio_target_wwn_lio_version.attr,
1356         NULL,
1357 };
1358
1359 static struct se_wwn *lio_target_call_coreaddtiqn(
1360         struct target_fabric_configfs *tf,
1361         struct config_group *group,
1362         const char *name)
1363 {
1364         struct config_group *stats_cg;
1365         struct iscsi_tiqn *tiqn;
1366
1367         tiqn = iscsit_add_tiqn((unsigned char *)name);
1368         if (IS_ERR(tiqn))
1369                 return ERR_CAST(tiqn);
1370         /*
1371          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1372          */
1373         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1374
1375         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1376                                 GFP_KERNEL);
1377         if (!stats_cg->default_groups) {
1378                 pr_err("Unable to allocate memory for"
1379                                 " stats_cg->default_groups\n");
1380                 iscsit_del_tiqn(tiqn);
1381                 return ERR_PTR(-ENOMEM);
1382         }
1383
1384         stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1385         stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1386         stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1387         stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1388         stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1389         stats_cg->default_groups[5] = NULL;
1390         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1391                         "iscsi_instance", &iscsi_stat_instance_cit);
1392         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1393                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1394         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1395                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1396         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1397                         "iscsi_login_stats", &iscsi_stat_login_cit);
1398         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1399                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1400
1401         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1402         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1403                         " %s\n", name);
1404         return &tiqn->tiqn_wwn;
1405 }
1406
1407 static void lio_target_call_coredeltiqn(
1408         struct se_wwn *wwn)
1409 {
1410         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1411         struct config_item *df_item;
1412         struct config_group *stats_cg;
1413         int i;
1414
1415         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1416         for (i = 0; stats_cg->default_groups[i]; i++) {
1417                 df_item = &stats_cg->default_groups[i]->cg_item;
1418                 stats_cg->default_groups[i] = NULL;
1419                 config_item_put(df_item);
1420         }
1421         kfree(stats_cg->default_groups);
1422
1423         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1424                         tiqn->tiqn);
1425         iscsit_del_tiqn(tiqn);
1426 }
1427
1428 /* End LIO-Target TIQN struct contig_lio_target_cit */
1429
1430 /* Start lio_target_discovery_auth_cit */
1431
1432 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1433         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1434 static ssize_t iscsi_disc_show_##name(                                  \
1435         struct target_fabric_configfs *tf,                              \
1436         char *page)                                                     \
1437 {                                                                       \
1438         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1439                 page);                                                  \
1440 }                                                                       \
1441 static ssize_t iscsi_disc_store_##name(                                 \
1442         struct target_fabric_configfs *tf,                              \
1443         const char *page,                                               \
1444         size_t count)                                                   \
1445 {                                                                       \
1446         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1447                 page, count);                                           \
1448 }
1449
1450 #define DEF_DISC_AUTH_INT(name)                                         \
1451         __DEF_NACL_AUTH_INT(disc, name)                                 \
1452 static ssize_t iscsi_disc_show_##name(                                  \
1453         struct target_fabric_configfs *tf,                              \
1454         char *page)                                                     \
1455 {                                                                       \
1456         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1457                         page);                                          \
1458 }
1459
1460 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1461 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1462
1463 /*
1464  * One-way authentication userid
1465  */
1466 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1467 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1468 /*
1469  * One-way authentication password
1470  */
1471 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1472 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1473 /*
1474  * Enforce mutual authentication
1475  */
1476 DEF_DISC_AUTH_INT(authenticate_target);
1477 DISC_AUTH_ATTR_RO(authenticate_target);
1478 /*
1479  * Mutual authentication userid
1480  */
1481 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1482 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1483 /*
1484  * Mutual authentication password
1485  */
1486 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1487 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1488
1489 /*
1490  * enforce_discovery_auth
1491  */
1492 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1493         struct target_fabric_configfs *tf,
1494         char *page)
1495 {
1496         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1497
1498         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1499 }
1500
1501 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1502         struct target_fabric_configfs *tf,
1503         const char *page,
1504         size_t count)
1505 {
1506         struct iscsi_param *param;
1507         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1508         char *endptr;
1509         u32 op;
1510
1511         op = simple_strtoul(page, &endptr, 0);
1512         if ((op != 1) && (op != 0)) {
1513                 pr_err("Illegal value for enforce_discovery_auth:"
1514                                 " %u\n", op);
1515                 return -EINVAL;
1516         }
1517
1518         if (!discovery_tpg) {
1519                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1520                 return -EINVAL;
1521         }
1522
1523         param = iscsi_find_param_from_key(AUTHMETHOD,
1524                                 discovery_tpg->param_list);
1525         if (!param)
1526                 return -EINVAL;
1527
1528         if (op) {
1529                 /*
1530                  * Reset the AuthMethod key to CHAP.
1531                  */
1532                 if (iscsi_update_param_value(param, CHAP) < 0)
1533                         return -EINVAL;
1534
1535                 discovery_tpg->tpg_attrib.authentication = 1;
1536                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1537                 pr_debug("LIO-CORE[0] Successfully enabled"
1538                         " authentication enforcement for iSCSI"
1539                         " Discovery TPG\n");
1540         } else {
1541                 /*
1542                  * Reset the AuthMethod key to CHAP,None
1543                  */
1544                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1545                         return -EINVAL;
1546
1547                 discovery_tpg->tpg_attrib.authentication = 0;
1548                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1549                 pr_debug("LIO-CORE[0] Successfully disabled"
1550                         " authentication enforcement for iSCSI"
1551                         " Discovery TPG\n");
1552         }
1553
1554         return count;
1555 }
1556
1557 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1558
1559 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1560         &iscsi_disc_userid.attr,
1561         &iscsi_disc_password.attr,
1562         &iscsi_disc_authenticate_target.attr,
1563         &iscsi_disc_userid_mutual.attr,
1564         &iscsi_disc_password_mutual.attr,
1565         &iscsi_disc_enforce_discovery_auth.attr,
1566         NULL,
1567 };
1568
1569 /* End lio_target_discovery_auth_cit */
1570
1571 /* Start functions for target_core_fabric_ops */
1572
1573 static char *iscsi_get_fabric_name(void)
1574 {
1575         return "iSCSI";
1576 }
1577
1578 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1579 {
1580         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1581
1582         /* only used for printks or comparism with ->ref_task_tag */
1583         return (__force u32)cmd->init_task_tag;
1584 }
1585
1586 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1587 {
1588         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1589
1590         return cmd->i_state;
1591 }
1592
1593 static u32 lio_sess_get_index(struct se_session *se_sess)
1594 {
1595         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1596
1597         return sess->session_index;
1598 }
1599
1600 static u32 lio_sess_get_initiator_sid(
1601         struct se_session *se_sess,
1602         unsigned char *buf,
1603         u32 size)
1604 {
1605         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1606         /*
1607          * iSCSI Initiator Session Identifier from RFC-3720.
1608          */
1609         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1610                 sess->isid[0], sess->isid[1], sess->isid[2],
1611                 sess->isid[3], sess->isid[4], sess->isid[5]);
1612 }
1613
1614 static int lio_queue_data_in(struct se_cmd *se_cmd)
1615 {
1616         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1617
1618         cmd->i_state = ISTATE_SEND_DATAIN;
1619         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1620
1621         return 0;
1622 }
1623
1624 static int lio_write_pending(struct se_cmd *se_cmd)
1625 {
1626         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1627         struct iscsi_conn *conn = cmd->conn;
1628
1629         if (!cmd->immediate_data && !cmd->unsolicited_data)
1630                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1631
1632         return 0;
1633 }
1634
1635 static int lio_write_pending_status(struct se_cmd *se_cmd)
1636 {
1637         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1638         int ret;
1639
1640         spin_lock_bh(&cmd->istate_lock);
1641         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1642         spin_unlock_bh(&cmd->istate_lock);
1643
1644         return ret;
1645 }
1646
1647 static int lio_queue_status(struct se_cmd *se_cmd)
1648 {
1649         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1650
1651         cmd->i_state = ISTATE_SEND_STATUS;
1652         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1653
1654         return 0;
1655 }
1656
1657 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1658 {
1659         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1660
1661         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1662         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1663         return 0;
1664 }
1665
1666 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1667 {
1668         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1669
1670         return &tpg->tpg_tiqn->tiqn[0];
1671 }
1672
1673 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1674 {
1675         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1676
1677         return tpg->tpgt;
1678 }
1679
1680 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1681 {
1682         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1683
1684         return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1685 }
1686
1687 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1688 {
1689         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1690
1691         return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1692 }
1693
1694 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1695 {
1696         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1697
1698         return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1699 }
1700
1701 static int lio_tpg_check_demo_mode_write_protect(
1702         struct se_portal_group *se_tpg)
1703 {
1704         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1705
1706         return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1707 }
1708
1709 static int lio_tpg_check_prod_mode_write_protect(
1710         struct se_portal_group *se_tpg)
1711 {
1712         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1713
1714         return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1715 }
1716
1717 static void lio_tpg_release_fabric_acl(
1718         struct se_portal_group *se_tpg,
1719         struct se_node_acl *se_acl)
1720 {
1721         struct iscsi_node_acl *acl = container_of(se_acl,
1722                                 struct iscsi_node_acl, se_node_acl);
1723         kfree(acl);
1724 }
1725
1726 /*
1727  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1728  *
1729  * Also, this function calls iscsit_inc_session_usage_count() on the
1730  * struct iscsi_session in question.
1731  */
1732 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1733 {
1734         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1735
1736         spin_lock(&sess->conn_lock);
1737         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1738             atomic_read(&sess->session_logout) ||
1739             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1740                 spin_unlock(&sess->conn_lock);
1741                 return 0;
1742         }
1743         atomic_set(&sess->session_reinstatement, 1);
1744         spin_unlock(&sess->conn_lock);
1745
1746         iscsit_stop_time2retain_timer(sess);
1747         iscsit_stop_session(sess, 1, 1);
1748
1749         return 1;
1750 }
1751
1752 /*
1753  * Calls iscsit_dec_session_usage_count() as inverse of
1754  * lio_tpg_shutdown_session()
1755  */
1756 static void lio_tpg_close_session(struct se_session *se_sess)
1757 {
1758         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1759         /*
1760          * If the iSCSI Session for the iSCSI Initiator Node exists,
1761          * forcefully shutdown the iSCSI NEXUS.
1762          */
1763         iscsit_close_session(sess);
1764 }
1765
1766 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1767 {
1768         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1769
1770         return tpg->tpg_tiqn->tiqn_index;
1771 }
1772
1773 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1774 {
1775         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1776                                 se_node_acl);
1777
1778         ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1779         iscsit_set_default_node_attribues(acl);
1780 }
1781
1782 static int lio_check_stop_free(struct se_cmd *se_cmd)
1783 {
1784         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1785 }
1786
1787 static void lio_release_cmd(struct se_cmd *se_cmd)
1788 {
1789         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1790
1791         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1792         cmd->release_cmd(cmd);
1793 }
1794
1795 /* End functions for target_core_fabric_ops */
1796
1797 int iscsi_target_register_configfs(void)
1798 {
1799         struct target_fabric_configfs *fabric;
1800         int ret;
1801
1802         lio_target_fabric_configfs = NULL;
1803         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1804         if (IS_ERR(fabric)) {
1805                 pr_err("target_fabric_configfs_init() for"
1806                                 " LIO-Target failed!\n");
1807                 return PTR_ERR(fabric);
1808         }
1809         /*
1810          * Setup the fabric API of function pointers used by target_core_mod..
1811          */
1812         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1813         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1814         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1815         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1816         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1817         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1818         fabric->tf_ops.tpg_get_pr_transport_id_len =
1819                                 &iscsi_get_pr_transport_id_len;
1820         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1821                                 &iscsi_parse_pr_out_transport_id;
1822         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1823         fabric->tf_ops.tpg_check_demo_mode_cache =
1824                                 &lio_tpg_check_demo_mode_cache;
1825         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1826                                 &lio_tpg_check_demo_mode_write_protect;
1827         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1828                                 &lio_tpg_check_prod_mode_write_protect;
1829         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1830         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1831         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1832         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1833         fabric->tf_ops.release_cmd = &lio_release_cmd;
1834         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1835         fabric->tf_ops.close_session = &lio_tpg_close_session;
1836         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1837         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1838         fabric->tf_ops.write_pending = &lio_write_pending;
1839         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1840         fabric->tf_ops.set_default_node_attributes =
1841                                 &lio_set_default_node_attributes;
1842         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1843         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1844         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1845         fabric->tf_ops.queue_status = &lio_queue_status;
1846         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1847         /*
1848          * Setup function pointers for generic logic in target_core_fabric_configfs.c
1849          */
1850         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1851         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1852         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1853         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1854         fabric->tf_ops.fabric_post_link = NULL;
1855         fabric->tf_ops.fabric_pre_unlink = NULL;
1856         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1857         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1858         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1859         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1860         /*
1861          * Setup default attribute lists for various fabric->tf_cit_tmpl
1862          * sturct config_item_type's
1863          */
1864         TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1865         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1866         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1867         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1868         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1869         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1870         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1871         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1872         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1873         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
1874
1875         ret = target_fabric_configfs_register(fabric);
1876         if (ret < 0) {
1877                 pr_err("target_fabric_configfs_register() for"
1878                                 " LIO-Target failed!\n");
1879                 target_fabric_configfs_free(fabric);
1880                 return ret;
1881         }
1882
1883         lio_target_fabric_configfs = fabric;
1884         pr_debug("LIO_TARGET[0] - Set fabric ->"
1885                         " lio_target_fabric_configfs\n");
1886         return 0;
1887 }
1888
1889
1890 void iscsi_target_deregister_configfs(void)
1891 {
1892         if (!lio_target_fabric_configfs)
1893                 return;
1894         /*
1895          * Shutdown discovery sessions and disable discovery TPG
1896          */
1897         if (iscsit_global->discovery_tpg)
1898                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
1899
1900         target_fabric_configfs_deregister(lio_target_fabric_configfs);
1901         lio_target_fabric_configfs = NULL;
1902         pr_debug("LIO_TARGET[0] - Cleared"
1903                                 " lio_target_fabric_configfs\n");
1904 }