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 = 0;
 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                 rc = request_module("ib_isert");
 178                 if (rc != 0) {
 179                         pr_warn("Unable to request_module for ib_isert\n");
 180                         rc = 0;
 181                 }
 182
 183                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 184                                 np->np_ip, tpg_np, ISCSI_INFINIBAND);
 185                 if (IS_ERR(tpg_np_iser)) {
 186                         rc = PTR_ERR(tpg_np_iser);
 187                         goto out;
 188                 }
 189         } else {
 190                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 191                 if (tpg_np_iser) {
 192                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 193                         if (rc < 0)
 194                                 goto out;
 195                 }
 196         }
 197
 198         iscsit_put_tpg(tpg);
 199         return count;
 200 out:
 201         iscsit_put_tpg(tpg);
 202         return rc;
 203 }
 204
 205 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 206
 207 static struct configfs_attribute *lio_target_portal_attrs[] = {
 208         &lio_target_np_sctp.attr,
 209         &lio_target_np_iser.attr,
 210         NULL,
 211 };
 212
 213 /* Stop items for lio_target_portal_cit */
 214
 215 /* Start items for lio_target_np_cit */
 216
 217 #define MAX_PORTAL_LEN          256
 218
 219 static struct se_tpg_np *lio_target_call_addnptotpg(
 220         struct se_portal_group *se_tpg,
 221         struct config_group *group,
 222         const char *name)
 223 {
 224         struct iscsi_portal_group *tpg;
 225         struct iscsi_tpg_np *tpg_np;
 226         char *str, *str2, *ip_str, *port_str;
 227         struct __kernel_sockaddr_storage sockaddr;
 228         struct sockaddr_in *sock_in;
 229         struct sockaddr_in6 *sock_in6;
 230         unsigned long port;
 231         int ret;
 232         char buf[MAX_PORTAL_LEN + 1];
 233
 234         if (strlen(name) > MAX_PORTAL_LEN) {
 235                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 236                         (int)strlen(name), MAX_PORTAL_LEN);
 237                 return ERR_PTR(-EOVERFLOW);
 238         }
 239         memset(buf, 0, MAX_PORTAL_LEN + 1);
 240         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 241
 242         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 243
 244         str = strstr(buf, "[");
 245         if (str) {
 246                 const char *end;
 247
 248                 str2 = strstr(str, "]");
 249                 if (!str2) {
 250                         pr_err("Unable to locate trailing \"]\""
 251                                 " in IPv6 iSCSI network portal address\n");
 252                         return ERR_PTR(-EINVAL);
 253                 }
 254                 str++; /* Skip over leading "[" */
 255                 *str2 = '\0'; /* Terminate the IPv6 address */
 256                 str2++; /* Skip over the "]" */
 257                 port_str = strstr(str2, ":");
 258                 if (!port_str) {
 259                         pr_err("Unable to locate \":port\""
 260                                 " in IPv6 iSCSI network portal address\n");
 261                         return ERR_PTR(-EINVAL);
 262                 }
 263                 *port_str = '\0'; /* Terminate string for IP */
 264                 port_str++; /* Skip over ":" */
 265
 266                 ret = strict_strtoul(port_str, 0, &port);
 267                 if (ret < 0) {
 268                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 269                         return ERR_PTR(ret);
 270                 }
 271                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 272                 sock_in6->sin6_family = AF_INET6;
 273                 sock_in6->sin6_port = htons((unsigned short)port);
 274                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 275                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 276                 if (ret <= 0) {
 277                         pr_err("in6_pton returned: %d\n", ret);
 278                         return ERR_PTR(-EINVAL);
 279                 }
 280         } else {
 281                 str = ip_str = &buf[0];
 282                 port_str = strstr(ip_str, ":");
 283                 if (!port_str) {
 284                         pr_err("Unable to locate \":port\""
 285                                 " in IPv4 iSCSI network portal address\n");
 286                         return ERR_PTR(-EINVAL);
 287                 }
 288                 *port_str = '\0'; /* Terminate string for IP */
 289                 port_str++; /* Skip over ":" */
 290
 291                 ret = strict_strtoul(port_str, 0, &port);
 292                 if (ret < 0) {
 293                         pr_err("strict_strtoul() failed for port_str: %d\n", ret);
 294                         return ERR_PTR(ret);
 295                 }
 296                 sock_in = (struct sockaddr_in *)&sockaddr;
 297                 sock_in->sin_family = AF_INET;
 298                 sock_in->sin_port = htons((unsigned short)port);
 299                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 300         }
 301         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 302         ret = iscsit_get_tpg(tpg);
 303         if (ret < 0)
 304                 return ERR_PTR(-EINVAL);
 305
 306         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 307                 " PORTAL: %s\n",
 308                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 309                 tpg->tpgt, name);
 310         /*
 311          * Assume ISCSI_TCP by default.  Other network portals for other
 312          * iSCSI fabrics:
 313          *
 314          * Traditional iSCSI over SCTP (initial support)
 315          * iSER/TCP (TODO, hardware available)
 316          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 317          * iSER/IB (TODO, hardware available)
 318          *
 319          * can be enabled with attributes under
 320          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 321          *
 322          */
 323         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 324                                 ISCSI_TCP);
 325         if (IS_ERR(tpg_np)) {
 326                 iscsit_put_tpg(tpg);
 327                 return ERR_CAST(tpg_np);
 328         }
 329         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 330
 331         iscsit_put_tpg(tpg);
 332         return &tpg_np->se_tpg_np;
 333 }
 334
 335 static void lio_target_call_delnpfromtpg(
 336         struct se_tpg_np *se_tpg_np)
 337 {
 338         struct iscsi_portal_group *tpg;
 339         struct iscsi_tpg_np *tpg_np;
 340         struct se_portal_group *se_tpg;
 341         int ret;
 342
 343         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 344         tpg = tpg_np->tpg;
 345         ret = iscsit_get_tpg(tpg);
 346         if (ret < 0)
 347                 return;
 348
 349         se_tpg = &tpg->tpg_se_tpg;
 350         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 351                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 352                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 353
 354         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 355         if (ret < 0)
 356                 goto out;
 357
 358         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 359 out:
 360         iscsit_put_tpg(tpg);
 361 }
 362
 363 /* End items for lio_target_np_cit */
 364
 365 /* Start items for lio_target_nacl_attrib_cit */
 366
 367 #define DEF_NACL_ATTRIB(name)                                           \
 368 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 369         struct se_node_acl *se_nacl,                                    \
 370         char *page)                                                     \
 371 {                                                                       \
 372         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 373                                         se_node_acl);                   \
 374                                                                         \
 375         return sprintf(page, "%u\n", ISCSI_NODE_ATTRIB(nacl)->name);    \
 376 }                                                                       \
 377                                                                         \
 378 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 379         struct se_node_acl *se_nacl,                                    \
 380         const char *page,                                               \
 381         size_t count)                                                   \
 382 {                                                                       \
 383         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 384                                         se_node_acl);                   \
 385         char *endptr;                                                   \
 386         u32 val;                                                        \
 387         int ret;                                                        \
 388                                                                         \
 389         val = simple_strtoul(page, &endptr, 0);                         \
 390         ret = iscsit_na_##name(nacl, val);                              \
 391         if (ret < 0)                                                    \
 392                 return ret;                                             \
 393                                                                         \
 394         return count;                                                   \
 395 }
 396
 397 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 398 /*
 399  * Define iscsi_node_attrib_s_dataout_timeout
 400  */
 401 DEF_NACL_ATTRIB(dataout_timeout);
 402 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 403 /*
 404  * Define iscsi_node_attrib_s_dataout_timeout_retries
 405  */
 406 DEF_NACL_ATTRIB(dataout_timeout_retries);
 407 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 408 /*
 409  * Define iscsi_node_attrib_s_default_erl
 410  */
 411 DEF_NACL_ATTRIB(default_erl);
 412 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 413 /*
 414  * Define iscsi_node_attrib_s_nopin_timeout
 415  */
 416 DEF_NACL_ATTRIB(nopin_timeout);
 417 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 418 /*
 419  * Define iscsi_node_attrib_s_nopin_response_timeout
 420  */
 421 DEF_NACL_ATTRIB(nopin_response_timeout);
 422 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 423 /*
 424  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 425  */
 426 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 427 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 428 /*
 429  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 430  */
 431 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 432 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 433 /*
 434  * Define iscsi_node_attrib_s_random_r2t_offsets
 435  */
 436 DEF_NACL_ATTRIB(random_r2t_offsets);
 437 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 438
 439 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 440         &iscsi_nacl_attrib_dataout_timeout.attr,
 441         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 442         &iscsi_nacl_attrib_default_erl.attr,
 443         &iscsi_nacl_attrib_nopin_timeout.attr,
 444         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 445         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 446         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 447         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 448         NULL,
 449 };
 450
 451 /* End items for lio_target_nacl_attrib_cit */
 452
 453 /* Start items for lio_target_nacl_auth_cit */
 454
 455 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 456 static ssize_t __iscsi_##prefix##_show_##name(                          \
 457         struct iscsi_node_acl *nacl,                                    \
 458         char *page)                                                     \
 459 {                                                                       \
 460         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 461                                                                         \
 462         if (!capable(CAP_SYS_ADMIN))                                    \
 463                 return -EPERM;                                          \
 464         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 465 }                                                                       \
 466                                                                         \
 467 static ssize_t __iscsi_##prefix##_store_##name(                         \
 468         struct iscsi_node_acl *nacl,                                    \
 469         const char *page,                                               \
 470         size_t count)                                                   \
 471 {                                                                       \
 472         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 473                                                                         \
 474         if (!capable(CAP_SYS_ADMIN))                                    \
 475                 return -EPERM;                                          \
 476                                                                         \
 477         snprintf(auth->name, PAGE_SIZE, "%s", page);                    \
 478         if (!strncmp("NULL", auth->name, 4))                            \
 479                 auth->naf_flags &= ~flags;                              \
 480         else                                                            \
 481                 auth->naf_flags |= flags;                               \
 482                                                                         \
 483         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 484             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 485                 auth->authenticate_target = 1;                          \
 486         else                                                            \
 487                 auth->authenticate_target = 0;                          \
 488                                                                         \
 489         return count;                                                   \
 490 }
 491
 492 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 493 static ssize_t __iscsi_##prefix##_show_##name(                          \
 494         struct iscsi_node_acl *nacl,                                    \
 495         char *page)                                                     \
 496 {                                                                       \
 497         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 498                                                                         \
 499         if (!capable(CAP_SYS_ADMIN))                                    \
 500                 return -EPERM;                                          \
 501                                                                         \
 502         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 503 }
 504
 505 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 506         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 507 static ssize_t iscsi_nacl_auth_show_##name(                             \
 508         struct se_node_acl *nacl,                                       \
 509         char *page)                                                     \
 510 {                                                                       \
 511         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 512                         struct iscsi_node_acl, se_node_acl), page);             \
 513 }                                                                       \
 514 static ssize_t iscsi_nacl_auth_store_##name(                            \
 515         struct se_node_acl *nacl,                                       \
 516         const char *page,                                               \
 517         size_t count)                                                   \
 518 {                                                                       \
 519         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 520                         struct iscsi_node_acl, se_node_acl), page, count);      \
 521 }
 522
 523 #define DEF_NACL_AUTH_INT(name)                                         \
 524         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 525 static ssize_t iscsi_nacl_auth_show_##name(                             \
 526         struct se_node_acl *nacl,                                       \
 527         char *page)                                                     \
 528 {                                                                       \
 529         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 530                         struct iscsi_node_acl, se_node_acl), page);             \
 531 }
 532
 533 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 534 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 535
 536 /*
 537  * One-way authentication userid
 538  */
 539 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 540 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 541 /*
 542  * One-way authentication password
 543  */
 544 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 545 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 546 /*
 547  * Enforce mutual authentication
 548  */
 549 DEF_NACL_AUTH_INT(authenticate_target);
 550 AUTH_ATTR_RO(authenticate_target);
 551 /*
 552  * Mutual authentication userid
 553  */
 554 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 555 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 556 /*
 557  * Mutual authentication password
 558  */
 559 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 560 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 561
 562 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 563         &iscsi_nacl_auth_userid.attr,
 564         &iscsi_nacl_auth_password.attr,
 565         &iscsi_nacl_auth_authenticate_target.attr,
 566         &iscsi_nacl_auth_userid_mutual.attr,
 567         &iscsi_nacl_auth_password_mutual.attr,
 568         NULL,
 569 };
 570
 571 /* End items for lio_target_nacl_auth_cit */
 572
 573 /* Start items for lio_target_nacl_param_cit */
 574
 575 #define DEF_NACL_PARAM(name)                                            \
 576 static ssize_t iscsi_nacl_param_show_##name(                            \
 577         struct se_node_acl *se_nacl,                                    \
 578         char *page)                                                     \
 579 {                                                                       \
 580         struct iscsi_session *sess;                                     \
 581         struct se_session *se_sess;                                     \
 582         ssize_t rb;                                                     \
 583                                                                         \
 584         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 585         se_sess = se_nacl->nacl_sess;                                   \
 586         if (!se_sess) {                                                 \
 587                 rb = snprintf(page, PAGE_SIZE,                          \
 588                         "No Active iSCSI Session\n");                   \
 589         } else {                                                        \
 590                 sess = se_sess->fabric_sess_ptr;                        \
 591                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 592                         (u32)sess->sess_ops->name);                     \
 593         }                                                               \
 594         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 595                                                                         \
 596         return rb;                                                      \
 597 }
 598
 599 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 600
 601 DEF_NACL_PARAM(MaxConnections);
 602 NACL_PARAM_ATTR(MaxConnections);
 603
 604 DEF_NACL_PARAM(InitialR2T);
 605 NACL_PARAM_ATTR(InitialR2T);
 606
 607 DEF_NACL_PARAM(ImmediateData);
 608 NACL_PARAM_ATTR(ImmediateData);
 609
 610 DEF_NACL_PARAM(MaxBurstLength);
 611 NACL_PARAM_ATTR(MaxBurstLength);
 612
 613 DEF_NACL_PARAM(FirstBurstLength);
 614 NACL_PARAM_ATTR(FirstBurstLength);
 615
 616 DEF_NACL_PARAM(DefaultTime2Wait);
 617 NACL_PARAM_ATTR(DefaultTime2Wait);
 618
 619 DEF_NACL_PARAM(DefaultTime2Retain);
 620 NACL_PARAM_ATTR(DefaultTime2Retain);
 621
 622 DEF_NACL_PARAM(MaxOutstandingR2T);
 623 NACL_PARAM_ATTR(MaxOutstandingR2T);
 624
 625 DEF_NACL_PARAM(DataPDUInOrder);
 626 NACL_PARAM_ATTR(DataPDUInOrder);
 627
 628 DEF_NACL_PARAM(DataSequenceInOrder);
 629 NACL_PARAM_ATTR(DataSequenceInOrder);
 630
 631 DEF_NACL_PARAM(ErrorRecoveryLevel);
 632 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 633
 634 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 635         &iscsi_nacl_param_MaxConnections.attr,
 636         &iscsi_nacl_param_InitialR2T.attr,
 637         &iscsi_nacl_param_ImmediateData.attr,
 638         &iscsi_nacl_param_MaxBurstLength.attr,
 639         &iscsi_nacl_param_FirstBurstLength.attr,
 640         &iscsi_nacl_param_DefaultTime2Wait.attr,
 641         &iscsi_nacl_param_DefaultTime2Retain.attr,
 642         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 643         &iscsi_nacl_param_DataPDUInOrder.attr,
 644         &iscsi_nacl_param_DataSequenceInOrder.attr,
 645         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 646         NULL,
 647 };
 648
 649 /* End items for lio_target_nacl_param_cit */
 650
 651 /* Start items for lio_target_acl_cit */
 652
 653 static ssize_t lio_target_nacl_show_info(
 654         struct se_node_acl *se_nacl,
 655         char *page)
 656 {
 657         struct iscsi_session *sess;
 658         struct iscsi_conn *conn;
 659         struct se_session *se_sess;
 660         ssize_t rb = 0;
 661
 662         spin_lock_bh(&se_nacl->nacl_sess_lock);
 663         se_sess = se_nacl->nacl_sess;
 664         if (!se_sess) {
 665                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 666                         " Endpoint: %s\n", se_nacl->initiatorname);
 667         } else {
 668                 sess = se_sess->fabric_sess_ptr;
 669
 670                 if (sess->sess_ops->InitiatorName)
 671                         rb += sprintf(page+rb, "InitiatorName: %s\n",
 672                                 sess->sess_ops->InitiatorName);
 673                 if (sess->sess_ops->InitiatorAlias)
 674                         rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 675                                 sess->sess_ops->InitiatorAlias);
 676
 677                 rb += sprintf(page+rb, "LIO Session ID: %u   "
 678                         "ISID: 0x%02x %02x %02x %02x %02x %02x  "
 679                         "TSIH: %hu  ", sess->sid,
 680                         sess->isid[0], sess->isid[1], sess->isid[2],
 681                         sess->isid[3], sess->isid[4], sess->isid[5],
 682                         sess->tsih);
 683                 rb += sprintf(page+rb, "SessionType: %s\n",
 684                                 (sess->sess_ops->SessionType) ?
 685                                 "Discovery" : "Normal");
 686                 rb += sprintf(page+rb, "Session State: ");
 687                 switch (sess->session_state) {
 688                 case TARG_SESS_STATE_FREE:
 689                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 690                         break;
 691                 case TARG_SESS_STATE_ACTIVE:
 692                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 693                         break;
 694                 case TARG_SESS_STATE_LOGGED_IN:
 695                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 696                         break;
 697                 case TARG_SESS_STATE_FAILED:
 698                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 699                         break;
 700                 case TARG_SESS_STATE_IN_CONTINUE:
 701                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 702                         break;
 703                 default:
 704                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 705                                         " State!\n");
 706                         break;
 707                 }
 708
 709                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 710                                 " Values]-----------------------\n");
 711                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 712                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 713                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 714                                 "   0x%08x   0x%08x\n",
 715                         sess->cmdsn_window,
 716                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 717                         sess->exp_cmd_sn, sess->max_cmd_sn,
 718                         sess->init_task_tag, sess->targ_xfer_tag);
 719                 rb += sprintf(page+rb, "----------------------[iSCSI"
 720                                 " Connections]-------------------------\n");
 721
 722                 spin_lock(&sess->conn_lock);
 723                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 724                         rb += sprintf(page+rb, "CID: %hu  Connection"
 725                                         " State: ", conn->cid);
 726                         switch (conn->conn_state) {
 727                         case TARG_CONN_STATE_FREE:
 728                                 rb += sprintf(page+rb,
 729                                         "TARG_CONN_STATE_FREE\n");
 730                                 break;
 731                         case TARG_CONN_STATE_XPT_UP:
 732                                 rb += sprintf(page+rb,
 733                                         "TARG_CONN_STATE_XPT_UP\n");
 734                                 break;
 735                         case TARG_CONN_STATE_IN_LOGIN:
 736                                 rb += sprintf(page+rb,
 737                                         "TARG_CONN_STATE_IN_LOGIN\n");
 738                                 break;
 739                         case TARG_CONN_STATE_LOGGED_IN:
 740                                 rb += sprintf(page+rb,
 741                                         "TARG_CONN_STATE_LOGGED_IN\n");
 742                                 break;
 743                         case TARG_CONN_STATE_IN_LOGOUT:
 744                                 rb += sprintf(page+rb,
 745                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 746                                 break;
 747                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 748                                 rb += sprintf(page+rb,
 749                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 750                                 break;
 751                         case TARG_CONN_STATE_CLEANUP_WAIT:
 752                                 rb += sprintf(page+rb,
 753                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 754                                 break;
 755                         default:
 756                                 rb += sprintf(page+rb,
 757                                         "ERROR: Unknown Connection State!\n");
 758                                 break;
 759                         }
 760
 761                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 762                                 (conn->network_transport == ISCSI_TCP) ?
 763                                 "TCP" : "SCTP");
 764                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 765                                 conn->stat_sn);
 766                 }
 767                 spin_unlock(&sess->conn_lock);
 768         }
 769         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 770
 771         return rb;
 772 }
 773
 774 TF_NACL_BASE_ATTR_RO(lio_target, info);
 775
 776 static ssize_t lio_target_nacl_show_cmdsn_depth(
 777         struct se_node_acl *se_nacl,
 778         char *page)
 779 {
 780         return sprintf(page, "%u\n", se_nacl->queue_depth);
 781 }
 782
 783 static ssize_t lio_target_nacl_store_cmdsn_depth(
 784         struct se_node_acl *se_nacl,
 785         const char *page,
 786         size_t count)
 787 {
 788         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 789         struct iscsi_portal_group *tpg = container_of(se_tpg,
 790                         struct iscsi_portal_group, tpg_se_tpg);
 791         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 792         char *endptr;
 793         u32 cmdsn_depth = 0;
 794         int ret;
 795
 796         cmdsn_depth = simple_strtoul(page, &endptr, 0);
 797         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 798                 pr_err("Passed cmdsn_depth: %u exceeds"
 799                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 800                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 801                 return -EINVAL;
 802         }
 803         acl_ci = &se_nacl->acl_group.cg_item;
 804         if (!acl_ci) {
 805                 pr_err("Unable to locatel acl_ci\n");
 806                 return -EINVAL;
 807         }
 808         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 809         if (!tpg_ci) {
 810                 pr_err("Unable to locate tpg_ci\n");
 811                 return -EINVAL;
 812         }
 813         wwn_ci = &tpg_ci->ci_group->cg_item;
 814         if (!wwn_ci) {
 815                 pr_err("Unable to locate config_item wwn_ci\n");
 816                 return -EINVAL;
 817         }
 818
 819         if (iscsit_get_tpg(tpg) < 0)
 820                 return -EINVAL;
 821         /*
 822          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 823          */
 824         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 825                                 config_item_name(acl_ci), cmdsn_depth, 1);
 826
 827         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 828                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 829                 config_item_name(tpg_ci), cmdsn_depth,
 830                 config_item_name(acl_ci));
 831
 832         iscsit_put_tpg(tpg);
 833         return (!ret) ? count : (ssize_t)ret;
 834 }
 835
 836 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 837
 838 static ssize_t lio_target_nacl_show_tag(
 839         struct se_node_acl *se_nacl,
 840         char *page)
 841 {
 842         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 843 }
 844
 845 static ssize_t lio_target_nacl_store_tag(
 846         struct se_node_acl *se_nacl,
 847         const char *page,
 848         size_t count)
 849 {
 850         int ret;
 851
 852         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 853
 854         if (ret < 0)
 855                 return ret;
 856         return count;
 857 }
 858
 859 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 860
 861 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 862         &lio_target_nacl_info.attr,
 863         &lio_target_nacl_cmdsn_depth.attr,
 864         &lio_target_nacl_tag.attr,
 865         NULL,
 866 };
 867
 868 static struct se_node_acl *lio_tpg_alloc_fabric_acl(
 869         struct se_portal_group *se_tpg)
 870 {
 871         struct iscsi_node_acl *acl;
 872
 873         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 874         if (!acl) {
 875                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 876                 return NULL;
 877         }
 878
 879         return &acl->se_node_acl;
 880 }
 881
 882 static struct se_node_acl *lio_target_make_nodeacl(
 883         struct se_portal_group *se_tpg,
 884         struct config_group *group,
 885         const char *name)
 886 {
 887         struct config_group *stats_cg;
 888         struct iscsi_node_acl *acl;
 889         struct se_node_acl *se_nacl_new, *se_nacl;
 890         struct iscsi_portal_group *tpg = container_of(se_tpg,
 891                         struct iscsi_portal_group, tpg_se_tpg);
 892         u32 cmdsn_depth;
 893
 894         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 895         if (!se_nacl_new)
 896                 return ERR_PTR(-ENOMEM);
 897
 898         cmdsn_depth = ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
 899         /*
 900          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 901          * when converting a NdoeACL from demo mode -> explict
 902          */
 903         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 904                                 name, cmdsn_depth);
 905         if (IS_ERR(se_nacl))
 906                 return se_nacl;
 907
 908         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 909         stats_cg = &se_nacl->acl_fabric_stat_group;
 910
 911         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 912                                 GFP_KERNEL);
 913         if (!stats_cg->default_groups) {
 914                 pr_err("Unable to allocate memory for"
 915                                 " stats_cg->default_groups\n");
 916                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 917                 kfree(acl);
 918                 return ERR_PTR(-ENOMEM);
 919         }
 920
 921         stats_cg->default_groups[0] = &NODE_STAT_GRPS(acl)->iscsi_sess_stats_group;
 922         stats_cg->default_groups[1] = NULL;
 923         config_group_init_type_name(&NODE_STAT_GRPS(acl)->iscsi_sess_stats_group,
 924                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 925
 926         return se_nacl;
 927 }
 928
 929 static void lio_target_drop_nodeacl(
 930         struct se_node_acl *se_nacl)
 931 {
 932         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 933         struct iscsi_node_acl *acl = container_of(se_nacl,
 934                         struct iscsi_node_acl, se_node_acl);
 935         struct config_item *df_item;
 936         struct config_group *stats_cg;
 937         int i;
 938
 939         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 940         for (i = 0; stats_cg->default_groups[i]; i++) {
 941                 df_item = &stats_cg->default_groups[i]->cg_item;
 942                 stats_cg->default_groups[i] = NULL;
 943                 config_item_put(df_item);
 944         }
 945         kfree(stats_cg->default_groups);
 946
 947         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 948         kfree(acl);
 949 }
 950
 951 /* End items for lio_target_acl_cit */
 952
 953 /* Start items for lio_target_tpg_attrib_cit */
 954
 955 #define DEF_TPG_ATTRIB(name)                                            \
 956                                                                         \
 957 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 958         struct se_portal_group *se_tpg,                         \
 959         char *page)                                                     \
 960 {                                                                       \
 961         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 962                         struct iscsi_portal_group, tpg_se_tpg); \
 963         ssize_t rb;                                                     \
 964                                                                         \
 965         if (iscsit_get_tpg(tpg) < 0)                                    \
 966                 return -EINVAL;                                         \
 967                                                                         \
 968         rb = sprintf(page, "%u\n", ISCSI_TPG_ATTRIB(tpg)->name);        \
 969         iscsit_put_tpg(tpg);                                            \
 970         return rb;                                                      \
 971 }                                                                       \
 972                                                                         \
 973 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 974         struct se_portal_group *se_tpg,                         \
 975         const char *page,                                               \
 976         size_t count)                                                   \
 977 {                                                                       \
 978         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 979                         struct iscsi_portal_group, tpg_se_tpg); \
 980         char *endptr;                                                   \
 981         u32 val;                                                        \
 982         int ret;                                                        \
 983                                                                         \
 984         if (iscsit_get_tpg(tpg) < 0)                                    \
 985                 return -EINVAL;                                         \
 986                                                                         \
 987         val = simple_strtoul(page, &endptr, 0);                         \
 988         ret = iscsit_ta_##name(tpg, val);                               \
 989         if (ret < 0)                                                    \
 990                 goto out;                                               \
 991                                                                         \
 992         iscsit_put_tpg(tpg);                                            \
 993         return count;                                                   \
 994 out:                                                                    \
 995         iscsit_put_tpg(tpg);                                            \
 996         return ret;                                                     \
 997 }
 998
 999 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
1000
1001 /*
1002  * Define iscsi_tpg_attrib_s_authentication
1003  */
1004 DEF_TPG_ATTRIB(authentication);
1005 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1006 /*
1007  * Define iscsi_tpg_attrib_s_login_timeout
1008  */
1009 DEF_TPG_ATTRIB(login_timeout);
1010 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1011 /*
1012  * Define iscsi_tpg_attrib_s_netif_timeout
1013  */
1014 DEF_TPG_ATTRIB(netif_timeout);
1015 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1016 /*
1017  * Define iscsi_tpg_attrib_s_generate_node_acls
1018  */
1019 DEF_TPG_ATTRIB(generate_node_acls);
1020 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1021 /*
1022  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1023  */
1024 DEF_TPG_ATTRIB(default_cmdsn_depth);
1025 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1026 /*
1027  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1028  */
1029 DEF_TPG_ATTRIB(cache_dynamic_acls);
1030 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1031 /*
1032  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1033  */
1034 DEF_TPG_ATTRIB(demo_mode_write_protect);
1035 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1036 /*
1037  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1038  */
1039 DEF_TPG_ATTRIB(prod_mode_write_protect);
1040 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1041
1042 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1043         &iscsi_tpg_attrib_authentication.attr,
1044         &iscsi_tpg_attrib_login_timeout.attr,
1045         &iscsi_tpg_attrib_netif_timeout.attr,
1046         &iscsi_tpg_attrib_generate_node_acls.attr,
1047         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1048         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1049         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1050         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1051         NULL,
1052 };
1053
1054 /* End items for lio_target_tpg_attrib_cit */
1055
1056 /* Start items for lio_target_tpg_param_cit */
1057
1058 #define DEF_TPG_PARAM(name)                                             \
1059 static ssize_t iscsi_tpg_param_show_##name(                             \
1060         struct se_portal_group *se_tpg,                                 \
1061         char *page)                                                     \
1062 {                                                                       \
1063         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1064                         struct iscsi_portal_group, tpg_se_tpg);         \
1065         struct iscsi_param *param;                                      \
1066         ssize_t rb;                                                     \
1067                                                                         \
1068         if (iscsit_get_tpg(tpg) < 0)                                    \
1069                 return -EINVAL;                                         \
1070                                                                         \
1071         param = iscsi_find_param_from_key(__stringify(name),            \
1072                                 tpg->param_list);                       \
1073         if (!param) {                                                   \
1074                 iscsit_put_tpg(tpg);                                    \
1075                 return -EINVAL;                                         \
1076         }                                                               \
1077         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1078                                                                         \
1079         iscsit_put_tpg(tpg);                                            \
1080         return rb;                                                      \
1081 }                                                                       \
1082 static ssize_t iscsi_tpg_param_store_##name(                            \
1083         struct se_portal_group *se_tpg,                         \
1084         const char *page,                                               \
1085         size_t count)                                                   \
1086 {                                                                       \
1087         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1088                         struct iscsi_portal_group, tpg_se_tpg);         \
1089         char *buf;                                                      \
1090         int ret;                                                        \
1091                                                                         \
1092         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1093         if (!buf)                                                       \
1094                 return -ENOMEM;                                         \
1095         snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);     \
1096         buf[strlen(buf)-1] = '\0'; /* Kill newline */                   \
1097                                                                         \
1098         if (iscsit_get_tpg(tpg) < 0) {                                  \
1099                 kfree(buf);                                             \
1100                 return -EINVAL;                                         \
1101         }                                                               \
1102                                                                         \
1103         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1104         if (ret < 0)                                                    \
1105                 goto out;                                               \
1106                                                                         \
1107         kfree(buf);                                                     \
1108         iscsit_put_tpg(tpg);                                            \
1109         return count;                                                   \
1110 out:                                                                    \
1111         kfree(buf);                                                     \
1112         iscsit_put_tpg(tpg);                                            \
1113         return -EINVAL;                                         \
1114 }
1115
1116 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1117
1118 DEF_TPG_PARAM(AuthMethod);
1119 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1120
1121 DEF_TPG_PARAM(HeaderDigest);
1122 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1123
1124 DEF_TPG_PARAM(DataDigest);
1125 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1126
1127 DEF_TPG_PARAM(MaxConnections);
1128 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1129
1130 DEF_TPG_PARAM(TargetAlias);
1131 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1132
1133 DEF_TPG_PARAM(InitialR2T);
1134 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1135
1136 DEF_TPG_PARAM(ImmediateData);
1137 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1138
1139 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1140 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1141
1142 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1143 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1144
1145 DEF_TPG_PARAM(MaxBurstLength);
1146 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1147
1148 DEF_TPG_PARAM(FirstBurstLength);
1149 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1150
1151 DEF_TPG_PARAM(DefaultTime2Wait);
1152 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1153
1154 DEF_TPG_PARAM(DefaultTime2Retain);
1155 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1156
1157 DEF_TPG_PARAM(MaxOutstandingR2T);
1158 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1159
1160 DEF_TPG_PARAM(DataPDUInOrder);
1161 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1162
1163 DEF_TPG_PARAM(DataSequenceInOrder);
1164 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1165
1166 DEF_TPG_PARAM(ErrorRecoveryLevel);
1167 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1168
1169 DEF_TPG_PARAM(IFMarker);
1170 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1171
1172 DEF_TPG_PARAM(OFMarker);
1173 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1174
1175 DEF_TPG_PARAM(IFMarkInt);
1176 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1177
1178 DEF_TPG_PARAM(OFMarkInt);
1179 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1180
1181 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1182         &iscsi_tpg_param_AuthMethod.attr,
1183         &iscsi_tpg_param_HeaderDigest.attr,
1184         &iscsi_tpg_param_DataDigest.attr,
1185         &iscsi_tpg_param_MaxConnections.attr,
1186         &iscsi_tpg_param_TargetAlias.attr,
1187         &iscsi_tpg_param_InitialR2T.attr,
1188         &iscsi_tpg_param_ImmediateData.attr,
1189         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1190         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1191         &iscsi_tpg_param_MaxBurstLength.attr,
1192         &iscsi_tpg_param_FirstBurstLength.attr,
1193         &iscsi_tpg_param_DefaultTime2Wait.attr,
1194         &iscsi_tpg_param_DefaultTime2Retain.attr,
1195         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1196         &iscsi_tpg_param_DataPDUInOrder.attr,
1197         &iscsi_tpg_param_DataSequenceInOrder.attr,
1198         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1199         &iscsi_tpg_param_IFMarker.attr,
1200         &iscsi_tpg_param_OFMarker.attr,
1201         &iscsi_tpg_param_IFMarkInt.attr,
1202         &iscsi_tpg_param_OFMarkInt.attr,
1203         NULL,
1204 };
1205
1206 /* End items for lio_target_tpg_param_cit */
1207
1208 /* Start items for lio_target_tpg_cit */
1209
1210 static ssize_t lio_target_tpg_show_enable(
1211         struct se_portal_group *se_tpg,
1212         char *page)
1213 {
1214         struct iscsi_portal_group *tpg = container_of(se_tpg,
1215                         struct iscsi_portal_group, tpg_se_tpg);
1216         ssize_t len;
1217
1218         spin_lock(&tpg->tpg_state_lock);
1219         len = sprintf(page, "%d\n",
1220                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1221         spin_unlock(&tpg->tpg_state_lock);
1222
1223         return len;
1224 }
1225
1226 static ssize_t lio_target_tpg_store_enable(
1227         struct se_portal_group *se_tpg,
1228         const char *page,
1229         size_t count)
1230 {
1231         struct iscsi_portal_group *tpg = container_of(se_tpg,
1232                         struct iscsi_portal_group, tpg_se_tpg);
1233         char *endptr;
1234         u32 op;
1235         int ret = 0;
1236
1237         op = simple_strtoul(page, &endptr, 0);
1238         if ((op != 1) && (op != 0)) {
1239                 pr_err("Illegal value for tpg_enable: %u\n", op);
1240                 return -EINVAL;
1241         }
1242
1243         ret = iscsit_get_tpg(tpg);
1244         if (ret < 0)
1245                 return -EINVAL;
1246
1247         if (op) {
1248                 ret = iscsit_tpg_enable_portal_group(tpg);
1249                 if (ret < 0)
1250                         goto out;
1251         } else {
1252                 /*
1253                  * iscsit_tpg_disable_portal_group() assumes force=1
1254                  */
1255                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1256                 if (ret < 0)
1257                         goto out;
1258         }
1259
1260         iscsit_put_tpg(tpg);
1261         return count;
1262 out:
1263         iscsit_put_tpg(tpg);
1264         return -EINVAL;
1265 }
1266
1267 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1268
1269 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1270         &lio_target_tpg_enable.attr,
1271         NULL,
1272 };
1273
1274 /* End items for lio_target_tpg_cit */
1275
1276 /* Start items for lio_target_tiqn_cit */
1277
1278 static struct se_portal_group *lio_target_tiqn_addtpg(
1279         struct se_wwn *wwn,
1280         struct config_group *group,
1281         const char *name)
1282 {
1283         struct iscsi_portal_group *tpg;
1284         struct iscsi_tiqn *tiqn;
1285         char *tpgt_str, *end_ptr;
1286         int ret = 0;
1287         unsigned short int tpgt;
1288
1289         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1290         /*
1291          * Only tpgt_# directory groups can be created below
1292          * target/iscsi/iqn.superturodiskarry/
1293         */
1294         tpgt_str = strstr(name, "tpgt_");
1295         if (!tpgt_str) {
1296                 pr_err("Unable to locate \"tpgt_#\" directory"
1297                                 " group\n");
1298                 return NULL;
1299         }
1300         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1301         tpgt = (unsigned short int) simple_strtoul(tpgt_str, &end_ptr, 0);
1302
1303         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1304         if (!tpg)
1305                 return NULL;
1306
1307         ret = core_tpg_register(
1308                         &lio_target_fabric_configfs->tf_ops,
1309                         wwn, &tpg->tpg_se_tpg, tpg,
1310                         TRANSPORT_TPG_TYPE_NORMAL);
1311         if (ret < 0)
1312                 return NULL;
1313
1314         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1315         if (ret != 0)
1316                 goto out;
1317
1318         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1319         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1320                         name);
1321         return &tpg->tpg_se_tpg;
1322 out:
1323         core_tpg_deregister(&tpg->tpg_se_tpg);
1324         kfree(tpg);
1325         return NULL;
1326 }
1327
1328 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1329 {
1330         struct iscsi_portal_group *tpg;
1331         struct iscsi_tiqn *tiqn;
1332
1333         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1334         tiqn = tpg->tpg_tiqn;
1335         /*
1336          * iscsit_tpg_del_portal_group() assumes force=1
1337          */
1338         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1339         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1340 }
1341
1342 /* End items for lio_target_tiqn_cit */
1343
1344 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1345
1346 static ssize_t lio_target_wwn_show_attr_lio_version(
1347         struct target_fabric_configfs *tf,
1348         char *page)
1349 {
1350         return sprintf(page, "RisingTide Systems Linux-iSCSI Target "ISCSIT_VERSION"\n");
1351 }
1352
1353 TF_WWN_ATTR_RO(lio_target, lio_version);
1354
1355 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1356         &lio_target_wwn_lio_version.attr,
1357         NULL,
1358 };
1359
1360 static struct se_wwn *lio_target_call_coreaddtiqn(
1361         struct target_fabric_configfs *tf,
1362         struct config_group *group,
1363         const char *name)
1364 {
1365         struct config_group *stats_cg;
1366         struct iscsi_tiqn *tiqn;
1367
1368         tiqn = iscsit_add_tiqn((unsigned char *)name);
1369         if (IS_ERR(tiqn))
1370                 return ERR_CAST(tiqn);
1371         /*
1372          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1373          */
1374         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1375
1376         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1377                                 GFP_KERNEL);
1378         if (!stats_cg->default_groups) {
1379                 pr_err("Unable to allocate memory for"
1380                                 " stats_cg->default_groups\n");
1381                 iscsit_del_tiqn(tiqn);
1382                 return ERR_PTR(-ENOMEM);
1383         }
1384
1385         stats_cg->default_groups[0] = &WWN_STAT_GRPS(tiqn)->iscsi_instance_group;
1386         stats_cg->default_groups[1] = &WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group;
1387         stats_cg->default_groups[2] = &WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group;
1388         stats_cg->default_groups[3] = &WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group;
1389         stats_cg->default_groups[4] = &WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group;
1390         stats_cg->default_groups[5] = NULL;
1391         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_instance_group,
1392                         "iscsi_instance", &iscsi_stat_instance_cit);
1393         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_sess_err_group,
1394                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1395         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_tgt_attr_group,
1396                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1397         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_login_stats_group,
1398                         "iscsi_login_stats", &iscsi_stat_login_cit);
1399         config_group_init_type_name(&WWN_STAT_GRPS(tiqn)->iscsi_logout_stats_group,
1400                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1401
1402         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1403         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1404                         " %s\n", name);
1405         return &tiqn->tiqn_wwn;
1406 }
1407
1408 static void lio_target_call_coredeltiqn(
1409         struct se_wwn *wwn)
1410 {
1411         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1412         struct config_item *df_item;
1413         struct config_group *stats_cg;
1414         int i;
1415
1416         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1417         for (i = 0; stats_cg->default_groups[i]; i++) {
1418                 df_item = &stats_cg->default_groups[i]->cg_item;
1419                 stats_cg->default_groups[i] = NULL;
1420                 config_item_put(df_item);
1421         }
1422         kfree(stats_cg->default_groups);
1423
1424         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1425                         tiqn->tiqn);
1426         iscsit_del_tiqn(tiqn);
1427 }
1428
1429 /* End LIO-Target TIQN struct contig_lio_target_cit */
1430
1431 /* Start lio_target_discovery_auth_cit */
1432
1433 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1434         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1435 static ssize_t iscsi_disc_show_##name(                                  \
1436         struct target_fabric_configfs *tf,                              \
1437         char *page)                                                     \
1438 {                                                                       \
1439         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1440                 page);                                                  \
1441 }                                                                       \
1442 static ssize_t iscsi_disc_store_##name(                                 \
1443         struct target_fabric_configfs *tf,                              \
1444         const char *page,                                               \
1445         size_t count)                                                   \
1446 {                                                                       \
1447         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1448                 page, count);                                           \
1449 }
1450
1451 #define DEF_DISC_AUTH_INT(name)                                         \
1452         __DEF_NACL_AUTH_INT(disc, name)                                 \
1453 static ssize_t iscsi_disc_show_##name(                                  \
1454         struct target_fabric_configfs *tf,                              \
1455         char *page)                                                     \
1456 {                                                                       \
1457         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1458                         page);                                          \
1459 }
1460
1461 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1462 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1463
1464 /*
1465  * One-way authentication userid
1466  */
1467 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1468 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1469 /*
1470  * One-way authentication password
1471  */
1472 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1473 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1474 /*
1475  * Enforce mutual authentication
1476  */
1477 DEF_DISC_AUTH_INT(authenticate_target);
1478 DISC_AUTH_ATTR_RO(authenticate_target);
1479 /*
1480  * Mutual authentication userid
1481  */
1482 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1483 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1484 /*
1485  * Mutual authentication password
1486  */
1487 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1488 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1489
1490 /*
1491  * enforce_discovery_auth
1492  */
1493 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1494         struct target_fabric_configfs *tf,
1495         char *page)
1496 {
1497         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1498
1499         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1500 }
1501
1502 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1503         struct target_fabric_configfs *tf,
1504         const char *page,
1505         size_t count)
1506 {
1507         struct iscsi_param *param;
1508         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1509         char *endptr;
1510         u32 op;
1511
1512         op = simple_strtoul(page, &endptr, 0);
1513         if ((op != 1) && (op != 0)) {
1514                 pr_err("Illegal value for enforce_discovery_auth:"
1515                                 " %u\n", op);
1516                 return -EINVAL;
1517         }
1518
1519         if (!discovery_tpg) {
1520                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1521                 return -EINVAL;
1522         }
1523
1524         param = iscsi_find_param_from_key(AUTHMETHOD,
1525                                 discovery_tpg->param_list);
1526         if (!param)
1527                 return -EINVAL;
1528
1529         if (op) {
1530                 /*
1531                  * Reset the AuthMethod key to CHAP.
1532                  */
1533                 if (iscsi_update_param_value(param, CHAP) < 0)
1534                         return -EINVAL;
1535
1536                 discovery_tpg->tpg_attrib.authentication = 1;
1537                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1538                 pr_debug("LIO-CORE[0] Successfully enabled"
1539                         " authentication enforcement for iSCSI"
1540                         " Discovery TPG\n");
1541         } else {
1542                 /*
1543                  * Reset the AuthMethod key to CHAP,None
1544                  */
1545                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1546                         return -EINVAL;
1547
1548                 discovery_tpg->tpg_attrib.authentication = 0;
1549                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1550                 pr_debug("LIO-CORE[0] Successfully disabled"
1551                         " authentication enforcement for iSCSI"
1552                         " Discovery TPG\n");
1553         }
1554
1555         return count;
1556 }
1557
1558 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1559
1560 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1561         &iscsi_disc_userid.attr,
1562         &iscsi_disc_password.attr,
1563         &iscsi_disc_authenticate_target.attr,
1564         &iscsi_disc_userid_mutual.attr,
1565         &iscsi_disc_password_mutual.attr,
1566         &iscsi_disc_enforce_discovery_auth.attr,
1567         NULL,
1568 };
1569
1570 /* End lio_target_discovery_auth_cit */
1571
1572 /* Start functions for target_core_fabric_ops */
1573
1574 static char *iscsi_get_fabric_name(void)
1575 {
1576         return "iSCSI";
1577 }
1578
1579 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1580 {
1581         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1582
1583         /* only used for printks or comparism with ->ref_task_tag */
1584         return (__force u32)cmd->init_task_tag;
1585 }
1586
1587 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1588 {
1589         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1590
1591         return cmd->i_state;
1592 }
1593
1594 static u32 lio_sess_get_index(struct se_session *se_sess)
1595 {
1596         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1597
1598         return sess->session_index;
1599 }
1600
1601 static u32 lio_sess_get_initiator_sid(
1602         struct se_session *se_sess,
1603         unsigned char *buf,
1604         u32 size)
1605 {
1606         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1607         /*
1608          * iSCSI Initiator Session Identifier from RFC-3720.
1609          */
1610         return snprintf(buf, size, "%02x%02x%02x%02x%02x%02x",
1611                 sess->isid[0], sess->isid[1], sess->isid[2],
1612                 sess->isid[3], sess->isid[4], sess->isid[5]);
1613 }
1614
1615 static int lio_queue_data_in(struct se_cmd *se_cmd)
1616 {
1617         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1618
1619         cmd->i_state = ISTATE_SEND_DATAIN;
1620         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1621
1622         return 0;
1623 }
1624
1625 static int lio_write_pending(struct se_cmd *se_cmd)
1626 {
1627         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1628         struct iscsi_conn *conn = cmd->conn;
1629
1630         if (!cmd->immediate_data && !cmd->unsolicited_data)
1631                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1632
1633         return 0;
1634 }
1635
1636 static int lio_write_pending_status(struct se_cmd *se_cmd)
1637 {
1638         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1639         int ret;
1640
1641         spin_lock_bh(&cmd->istate_lock);
1642         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1643         spin_unlock_bh(&cmd->istate_lock);
1644
1645         return ret;
1646 }
1647
1648 static int lio_queue_status(struct se_cmd *se_cmd)
1649 {
1650         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1651
1652         cmd->i_state = ISTATE_SEND_STATUS;
1653         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1654
1655         return 0;
1656 }
1657
1658 static int lio_queue_tm_rsp(struct se_cmd *se_cmd)
1659 {
1660         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1661
1662         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1663         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1664         return 0;
1665 }
1666
1667 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1668 {
1669         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1670
1671         return &tpg->tpg_tiqn->tiqn[0];
1672 }
1673
1674 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1675 {
1676         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1677
1678         return tpg->tpgt;
1679 }
1680
1681 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1682 {
1683         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1684
1685         return ISCSI_TPG_ATTRIB(tpg)->default_cmdsn_depth;
1686 }
1687
1688 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1689 {
1690         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1691
1692         return ISCSI_TPG_ATTRIB(tpg)->generate_node_acls;
1693 }
1694
1695 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1696 {
1697         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1698
1699         return ISCSI_TPG_ATTRIB(tpg)->cache_dynamic_acls;
1700 }
1701
1702 static int lio_tpg_check_demo_mode_write_protect(
1703         struct se_portal_group *se_tpg)
1704 {
1705         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1706
1707         return ISCSI_TPG_ATTRIB(tpg)->demo_mode_write_protect;
1708 }
1709
1710 static int lio_tpg_check_prod_mode_write_protect(
1711         struct se_portal_group *se_tpg)
1712 {
1713         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1714
1715         return ISCSI_TPG_ATTRIB(tpg)->prod_mode_write_protect;
1716 }
1717
1718 static void lio_tpg_release_fabric_acl(
1719         struct se_portal_group *se_tpg,
1720         struct se_node_acl *se_acl)
1721 {
1722         struct iscsi_node_acl *acl = container_of(se_acl,
1723                                 struct iscsi_node_acl, se_node_acl);
1724         kfree(acl);
1725 }
1726
1727 /*
1728  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1729  *
1730  * Also, this function calls iscsit_inc_session_usage_count() on the
1731  * struct iscsi_session in question.
1732  */
1733 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1734 {
1735         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1736
1737         spin_lock(&sess->conn_lock);
1738         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1739             atomic_read(&sess->session_logout) ||
1740             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1741                 spin_unlock(&sess->conn_lock);
1742                 return 0;
1743         }
1744         atomic_set(&sess->session_reinstatement, 1);
1745         spin_unlock(&sess->conn_lock);
1746
1747         iscsit_stop_time2retain_timer(sess);
1748         iscsit_stop_session(sess, 1, 1);
1749
1750         return 1;
1751 }
1752
1753 /*
1754  * Calls iscsit_dec_session_usage_count() as inverse of
1755  * lio_tpg_shutdown_session()
1756  */
1757 static void lio_tpg_close_session(struct se_session *se_sess)
1758 {
1759         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1760         /*
1761          * If the iSCSI Session for the iSCSI Initiator Node exists,
1762          * forcefully shutdown the iSCSI NEXUS.
1763          */
1764         iscsit_close_session(sess);
1765 }
1766
1767 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1768 {
1769         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1770
1771         return tpg->tpg_tiqn->tiqn_index;
1772 }
1773
1774 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1775 {
1776         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1777                                 se_node_acl);
1778
1779         ISCSI_NODE_ATTRIB(acl)->nacl = acl;
1780         iscsit_set_default_node_attribues(acl);
1781 }
1782
1783 static int lio_check_stop_free(struct se_cmd *se_cmd)
1784 {
1785         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1786 }
1787
1788 static void lio_release_cmd(struct se_cmd *se_cmd)
1789 {
1790         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1791
1792         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1793         cmd->release_cmd(cmd);
1794 }
1795
1796 /* End functions for target_core_fabric_ops */
1797
1798 int iscsi_target_register_configfs(void)
1799 {
1800         struct target_fabric_configfs *fabric;
1801         int ret;
1802
1803         lio_target_fabric_configfs = NULL;
1804         fabric = target_fabric_configfs_init(THIS_MODULE, "iscsi");
1805         if (IS_ERR(fabric)) {
1806                 pr_err("target_fabric_configfs_init() for"
1807                                 " LIO-Target failed!\n");
1808                 return PTR_ERR(fabric);
1809         }
1810         /*
1811          * Setup the fabric API of function pointers used by target_core_mod..
1812          */
1813         fabric->tf_ops.get_fabric_name = &iscsi_get_fabric_name;
1814         fabric->tf_ops.get_fabric_proto_ident = &iscsi_get_fabric_proto_ident;
1815         fabric->tf_ops.tpg_get_wwn = &lio_tpg_get_endpoint_wwn;
1816         fabric->tf_ops.tpg_get_tag = &lio_tpg_get_tag;
1817         fabric->tf_ops.tpg_get_default_depth = &lio_tpg_get_default_depth;
1818         fabric->tf_ops.tpg_get_pr_transport_id = &iscsi_get_pr_transport_id;
1819         fabric->tf_ops.tpg_get_pr_transport_id_len =
1820                                 &iscsi_get_pr_transport_id_len;
1821         fabric->tf_ops.tpg_parse_pr_out_transport_id =
1822                                 &iscsi_parse_pr_out_transport_id;
1823         fabric->tf_ops.tpg_check_demo_mode = &lio_tpg_check_demo_mode;
1824         fabric->tf_ops.tpg_check_demo_mode_cache =
1825                                 &lio_tpg_check_demo_mode_cache;
1826         fabric->tf_ops.tpg_check_demo_mode_write_protect =
1827                                 &lio_tpg_check_demo_mode_write_protect;
1828         fabric->tf_ops.tpg_check_prod_mode_write_protect =
1829                                 &lio_tpg_check_prod_mode_write_protect;
1830         fabric->tf_ops.tpg_alloc_fabric_acl = &lio_tpg_alloc_fabric_acl;
1831         fabric->tf_ops.tpg_release_fabric_acl = &lio_tpg_release_fabric_acl;
1832         fabric->tf_ops.tpg_get_inst_index = &lio_tpg_get_inst_index;
1833         fabric->tf_ops.check_stop_free = &lio_check_stop_free,
1834         fabric->tf_ops.release_cmd = &lio_release_cmd;
1835         fabric->tf_ops.shutdown_session = &lio_tpg_shutdown_session;
1836         fabric->tf_ops.close_session = &lio_tpg_close_session;
1837         fabric->tf_ops.sess_get_index = &lio_sess_get_index;
1838         fabric->tf_ops.sess_get_initiator_sid = &lio_sess_get_initiator_sid;
1839         fabric->tf_ops.write_pending = &lio_write_pending;
1840         fabric->tf_ops.write_pending_status = &lio_write_pending_status;
1841         fabric->tf_ops.set_default_node_attributes =
1842                                 &lio_set_default_node_attributes;
1843         fabric->tf_ops.get_task_tag = &iscsi_get_task_tag;
1844         fabric->tf_ops.get_cmd_state = &iscsi_get_cmd_state;
1845         fabric->tf_ops.queue_data_in = &lio_queue_data_in;
1846         fabric->tf_ops.queue_status = &lio_queue_status;
1847         fabric->tf_ops.queue_tm_rsp = &lio_queue_tm_rsp;
1848         /*
1849          * Setup function pointers for generic logic in target_core_fabric_configfs.c
1850          */
1851         fabric->tf_ops.fabric_make_wwn = &lio_target_call_coreaddtiqn;
1852         fabric->tf_ops.fabric_drop_wwn = &lio_target_call_coredeltiqn;
1853         fabric->tf_ops.fabric_make_tpg = &lio_target_tiqn_addtpg;
1854         fabric->tf_ops.fabric_drop_tpg = &lio_target_tiqn_deltpg;
1855         fabric->tf_ops.fabric_post_link = NULL;
1856         fabric->tf_ops.fabric_pre_unlink = NULL;
1857         fabric->tf_ops.fabric_make_np = &lio_target_call_addnptotpg;
1858         fabric->tf_ops.fabric_drop_np = &lio_target_call_delnpfromtpg;
1859         fabric->tf_ops.fabric_make_nodeacl = &lio_target_make_nodeacl;
1860         fabric->tf_ops.fabric_drop_nodeacl = &lio_target_drop_nodeacl;
1861         /*
1862          * Setup default attribute lists for various fabric->tf_cit_tmpl
1863          * sturct config_item_type's
1864          */
1865         TF_CIT_TMPL(fabric)->tfc_discovery_cit.ct_attrs = lio_target_discovery_auth_attrs;
1866         TF_CIT_TMPL(fabric)->tfc_wwn_cit.ct_attrs = lio_target_wwn_attrs;
1867         TF_CIT_TMPL(fabric)->tfc_tpg_base_cit.ct_attrs = lio_target_tpg_attrs;
1868         TF_CIT_TMPL(fabric)->tfc_tpg_attrib_cit.ct_attrs = lio_target_tpg_attrib_attrs;
1869         TF_CIT_TMPL(fabric)->tfc_tpg_param_cit.ct_attrs = lio_target_tpg_param_attrs;
1870         TF_CIT_TMPL(fabric)->tfc_tpg_np_base_cit.ct_attrs = lio_target_portal_attrs;
1871         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_base_cit.ct_attrs = lio_target_initiator_attrs;
1872         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_attrib_cit.ct_attrs = lio_target_nacl_attrib_attrs;
1873         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_auth_cit.ct_attrs = lio_target_nacl_auth_attrs;
1874         TF_CIT_TMPL(fabric)->tfc_tpg_nacl_param_cit.ct_attrs = lio_target_nacl_param_attrs;
1875
1876         ret = target_fabric_configfs_register(fabric);
1877         if (ret < 0) {
1878                 pr_err("target_fabric_configfs_register() for"
1879                                 " LIO-Target failed!\n");
1880                 target_fabric_configfs_free(fabric);
1881                 return ret;
1882         }
1883
1884         lio_target_fabric_configfs = fabric;
1885         pr_debug("LIO_TARGET[0] - Set fabric ->"
1886                         " lio_target_fabric_configfs\n");
1887         return 0;
1888 }
1889
1890
1891 void iscsi_target_deregister_configfs(void)
1892 {
1893         if (!lio_target_fabric_configfs)
1894                 return;
1895         /*
1896          * Shutdown discovery sessions and disable discovery TPG
1897          */
1898         if (iscsit_global->discovery_tpg)
1899                 iscsit_tpg_disable_portal_group(iscsit_global->discovery_tpg, 1);
1900
1901         target_fabric_configfs_deregister(lio_target_fabric_configfs);
1902         lio_target_fabric_configfs = NULL;
1903         pr_debug("LIO_TARGET[0] - Cleared"
1904                                 " lio_target_fabric_configfs\n");
1905 }