drivers/target/iscsi/iscsi_target_configfs.c

   1 /*******************************************************************************
   2  * This file contains the configfs implementation for iSCSI Target mode
   3  * from the LIO-Target Project.
   4  *
   5  * (c) Copyright 2007-2013 Datera, Inc.
   6  *
   7  * Author: Nicholas A. Bellinger <nab@linux-iscsi.org>
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License as published by
  11  * the Free Software Foundation; either version 2 of the License, or
  12  * (at your option) any later version.
  13  *
  14  * This program is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17  * GNU General Public License for more details.
  18  ****************************************************************************/
  19
  20 #include <linux/configfs.h>
  21 #include <linux/ctype.h>
  22 #include <linux/export.h>
  23 #include <linux/inet.h>
  24 #include <target/target_core_base.h>
  25 #include <target/target_core_fabric.h>
  26 #include <target/target_core_fabric_configfs.h>
  27 #include <target/target_core_configfs.h>
  28 #include <target/configfs_macros.h>
  29 #include <target/iscsi/iscsi_transport.h>
  30
  31 #include <target/iscsi/iscsi_target_core.h>
  32 #include "iscsi_target_parameters.h"
  33 #include "iscsi_target_device.h"
  34 #include "iscsi_target_erl0.h"
  35 #include "iscsi_target_nodeattrib.h"
  36 #include "iscsi_target_tpg.h"
  37 #include "iscsi_target_util.h"
  38 #include "iscsi_target.h"
  39 #include <target/iscsi/iscsi_target_stat.h>
  40
  41 struct lio_target_configfs_attribute {
  42         struct configfs_attribute attr;
  43         ssize_t (*show)(void *, char *);
  44         ssize_t (*store)(void *, const char *, size_t);
  45 };
  46
  47 /* Start items for lio_target_portal_cit */
  48
  49 static ssize_t lio_target_np_show_sctp(
  50         struct se_tpg_np *se_tpg_np,
  51         char *page)
  52 {
  53         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  54                                 struct iscsi_tpg_np, se_tpg_np);
  55         struct iscsi_tpg_np *tpg_np_sctp;
  56         ssize_t rb;
  57
  58         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  59         if (tpg_np_sctp)
  60                 rb = sprintf(page, "1\n");
  61         else
  62                 rb = sprintf(page, "0\n");
  63
  64         return rb;
  65 }
  66
  67 static ssize_t lio_target_np_store_sctp(
  68         struct se_tpg_np *se_tpg_np,
  69         const char *page,
  70         size_t count)
  71 {
  72         struct iscsi_np *np;
  73         struct iscsi_portal_group *tpg;
  74         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  75                                 struct iscsi_tpg_np, se_tpg_np);
  76         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  77         u32 op;
  78         int ret;
  79
  80         ret = kstrtou32(page, 0, &op);
  81         if (ret)
  82                 return ret;
  83         if ((op != 1) && (op != 0)) {
  84                 pr_err("Illegal value for tpg_enable: %u\n", op);
  85                 return -EINVAL;
  86         }
  87         np = tpg_np->tpg_np;
  88         if (!np) {
  89                 pr_err("Unable to locate struct iscsi_np from"
  90                                 " struct iscsi_tpg_np\n");
  91                 return -EINVAL;
  92         }
  93
  94         tpg = tpg_np->tpg;
  95         if (iscsit_get_tpg(tpg) < 0)
  96                 return -EINVAL;
  97
  98         if (op) {
  99                 /*
 100                  * Use existing np->np_sockaddr for SCTP network portal reference
 101                  */
 102                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 103                                         np->np_ip, tpg_np, ISCSI_SCTP_TCP);
 104                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 105                         goto out;
 106         } else {
 107                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 108                 if (!tpg_np_sctp)
 109                         goto out;
 110
 111                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 112                 if (ret < 0)
 113                         goto out;
 114         }
 115
 116         iscsit_put_tpg(tpg);
 117         return count;
 118 out:
 119         iscsit_put_tpg(tpg);
 120         return -EINVAL;
 121 }
 122
 123 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 124
 125 static ssize_t lio_target_np_show_iser(
 126         struct se_tpg_np *se_tpg_np,
 127         char *page)
 128 {
 129         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 130                                 struct iscsi_tpg_np, se_tpg_np);
 131         struct iscsi_tpg_np *tpg_np_iser;
 132         ssize_t rb;
 133
 134         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 135         if (tpg_np_iser)
 136                 rb = sprintf(page, "1\n");
 137         else
 138                 rb = sprintf(page, "0\n");
 139
 140         return rb;
 141 }
 142
 143 static ssize_t lio_target_np_store_iser(
 144         struct se_tpg_np *se_tpg_np,
 145         const char *page,
 146         size_t count)
 147 {
 148         struct iscsi_np *np;
 149         struct iscsi_portal_group *tpg;
 150         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 151                                 struct iscsi_tpg_np, se_tpg_np);
 152         struct iscsi_tpg_np *tpg_np_iser = NULL;
 153         char *endptr;
 154         u32 op;
 155         int rc = 0;
 156
 157         op = simple_strtoul(page, &endptr, 0);
 158         if ((op != 1) && (op != 0)) {
 159                 pr_err("Illegal value for tpg_enable: %u\n", op);
 160                 return -EINVAL;
 161         }
 162         np = tpg_np->tpg_np;
 163         if (!np) {
 164                 pr_err("Unable to locate struct iscsi_np from"
 165                                 " struct iscsi_tpg_np\n");
 166                 return -EINVAL;
 167         }
 168
 169         tpg = tpg_np->tpg;
 170         if (iscsit_get_tpg(tpg) < 0)
 171                 return -EINVAL;
 172
 173         if (op) {
 174                 rc = request_module("ib_isert");
 175                 if (rc != 0) {
 176                         pr_warn("Unable to request_module for ib_isert\n");
 177                         rc = 0;
 178                 }
 179
 180                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 181                                 np->np_ip, tpg_np, ISCSI_INFINIBAND);
 182                 if (IS_ERR(tpg_np_iser)) {
 183                         rc = PTR_ERR(tpg_np_iser);
 184                         goto out;
 185                 }
 186         } else {
 187                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 188                 if (tpg_np_iser) {
 189                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 190                         if (rc < 0)
 191                                 goto out;
 192                 }
 193         }
 194
 195         iscsit_put_tpg(tpg);
 196         return count;
 197 out:
 198         iscsit_put_tpg(tpg);
 199         return rc;
 200 }
 201
 202 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 203
 204 static struct configfs_attribute *lio_target_portal_attrs[] = {
 205         &lio_target_np_sctp.attr,
 206         &lio_target_np_iser.attr,
 207         NULL,
 208 };
 209
 210 /* Stop items for lio_target_portal_cit */
 211
 212 /* Start items for lio_target_np_cit */
 213
 214 #define MAX_PORTAL_LEN          256
 215
 216 static struct se_tpg_np *lio_target_call_addnptotpg(
 217         struct se_portal_group *se_tpg,
 218         struct config_group *group,
 219         const char *name)
 220 {
 221         struct iscsi_portal_group *tpg;
 222         struct iscsi_tpg_np *tpg_np;
 223         char *str, *str2, *ip_str, *port_str;
 224         struct __kernel_sockaddr_storage sockaddr;
 225         struct sockaddr_in *sock_in;
 226         struct sockaddr_in6 *sock_in6;
 227         unsigned long port;
 228         int ret;
 229         char buf[MAX_PORTAL_LEN + 1];
 230
 231         if (strlen(name) > MAX_PORTAL_LEN) {
 232                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 233                         (int)strlen(name), MAX_PORTAL_LEN);
 234                 return ERR_PTR(-EOVERFLOW);
 235         }
 236         memset(buf, 0, MAX_PORTAL_LEN + 1);
 237         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 238
 239         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 240
 241         str = strstr(buf, "[");
 242         if (str) {
 243                 const char *end;
 244
 245                 str2 = strstr(str, "]");
 246                 if (!str2) {
 247                         pr_err("Unable to locate trailing \"]\""
 248                                 " in IPv6 iSCSI network portal address\n");
 249                         return ERR_PTR(-EINVAL);
 250                 }
 251                 str++; /* Skip over leading "[" */
 252                 *str2 = '\0'; /* Terminate the IPv6 address */
 253                 str2++; /* Skip over the "]" */
 254                 port_str = strstr(str2, ":");
 255                 if (!port_str) {
 256                         pr_err("Unable to locate \":port\""
 257                                 " in IPv6 iSCSI network portal address\n");
 258                         return ERR_PTR(-EINVAL);
 259                 }
 260                 *port_str = '\0'; /* Terminate string for IP */
 261                 port_str++; /* Skip over ":" */
 262
 263                 ret = kstrtoul(port_str, 0, &port);
 264                 if (ret < 0) {
 265                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 266                         return ERR_PTR(ret);
 267                 }
 268                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 269                 sock_in6->sin6_family = AF_INET6;
 270                 sock_in6->sin6_port = htons((unsigned short)port);
 271                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 272                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 273                 if (ret <= 0) {
 274                         pr_err("in6_pton returned: %d\n", ret);
 275                         return ERR_PTR(-EINVAL);
 276                 }
 277         } else {
 278                 str = ip_str = &buf[0];
 279                 port_str = strstr(ip_str, ":");
 280                 if (!port_str) {
 281                         pr_err("Unable to locate \":port\""
 282                                 " in IPv4 iSCSI network portal address\n");
 283                         return ERR_PTR(-EINVAL);
 284                 }
 285                 *port_str = '\0'; /* Terminate string for IP */
 286                 port_str++; /* Skip over ":" */
 287
 288                 ret = kstrtoul(port_str, 0, &port);
 289                 if (ret < 0) {
 290                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 291                         return ERR_PTR(ret);
 292                 }
 293                 sock_in = (struct sockaddr_in *)&sockaddr;
 294                 sock_in->sin_family = AF_INET;
 295                 sock_in->sin_port = htons((unsigned short)port);
 296                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 297         }
 298         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 299         ret = iscsit_get_tpg(tpg);
 300         if (ret < 0)
 301                 return ERR_PTR(-EINVAL);
 302
 303         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 304                 " PORTAL: %s\n",
 305                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 306                 tpg->tpgt, name);
 307         /*
 308          * Assume ISCSI_TCP by default.  Other network portals for other
 309          * iSCSI fabrics:
 310          *
 311          * Traditional iSCSI over SCTP (initial support)
 312          * iSER/TCP (TODO, hardware available)
 313          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 314          * iSER/IB (TODO, hardware available)
 315          *
 316          * can be enabled with attributes under
 317          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 318          *
 319          */
 320         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 321                                 ISCSI_TCP);
 322         if (IS_ERR(tpg_np)) {
 323                 iscsit_put_tpg(tpg);
 324                 return ERR_CAST(tpg_np);
 325         }
 326         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 327
 328         iscsit_put_tpg(tpg);
 329         return &tpg_np->se_tpg_np;
 330 }
 331
 332 static void lio_target_call_delnpfromtpg(
 333         struct se_tpg_np *se_tpg_np)
 334 {
 335         struct iscsi_portal_group *tpg;
 336         struct iscsi_tpg_np *tpg_np;
 337         struct se_portal_group *se_tpg;
 338         int ret;
 339
 340         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 341         tpg = tpg_np->tpg;
 342         ret = iscsit_get_tpg(tpg);
 343         if (ret < 0)
 344                 return;
 345
 346         se_tpg = &tpg->tpg_se_tpg;
 347         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 348                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 349                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 350
 351         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 352         if (ret < 0)
 353                 goto out;
 354
 355         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 356 out:
 357         iscsit_put_tpg(tpg);
 358 }
 359
 360 /* End items for lio_target_np_cit */
 361
 362 /* Start items for lio_target_nacl_attrib_cit */
 363
 364 #define DEF_NACL_ATTRIB(name)                                           \
 365 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 366         struct se_node_acl *se_nacl,                                    \
 367         char *page)                                                     \
 368 {                                                                       \
 369         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 370                                         se_node_acl);                   \
 371                                                                         \
 372         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 373 }                                                                       \
 374                                                                         \
 375 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 376         struct se_node_acl *se_nacl,                                    \
 377         const char *page,                                               \
 378         size_t count)                                                   \
 379 {                                                                       \
 380         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 381                                         se_node_acl);                   \
 382         u32 val;                                                        \
 383         int ret;                                                        \
 384                                                                         \
 385         ret = kstrtou32(page, 0, &val);                                 \
 386         if (ret)                                                        \
 387                 return ret;                                             \
 388         ret = iscsit_na_##name(nacl, val);                              \
 389         if (ret < 0)                                                    \
 390                 return ret;                                             \
 391                                                                         \
 392         return count;                                                   \
 393 }
 394
 395 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 396 /*
 397  * Define iscsi_node_attrib_s_dataout_timeout
 398  */
 399 DEF_NACL_ATTRIB(dataout_timeout);
 400 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 401 /*
 402  * Define iscsi_node_attrib_s_dataout_timeout_retries
 403  */
 404 DEF_NACL_ATTRIB(dataout_timeout_retries);
 405 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 406 /*
 407  * Define iscsi_node_attrib_s_default_erl
 408  */
 409 DEF_NACL_ATTRIB(default_erl);
 410 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 411 /*
 412  * Define iscsi_node_attrib_s_nopin_timeout
 413  */
 414 DEF_NACL_ATTRIB(nopin_timeout);
 415 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 416 /*
 417  * Define iscsi_node_attrib_s_nopin_response_timeout
 418  */
 419 DEF_NACL_ATTRIB(nopin_response_timeout);
 420 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 421 /*
 422  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 423  */
 424 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 425 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 426 /*
 427  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 428  */
 429 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 430 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 431 /*
 432  * Define iscsi_node_attrib_s_random_r2t_offsets
 433  */
 434 DEF_NACL_ATTRIB(random_r2t_offsets);
 435 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 436
 437 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 438         &iscsi_nacl_attrib_dataout_timeout.attr,
 439         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 440         &iscsi_nacl_attrib_default_erl.attr,
 441         &iscsi_nacl_attrib_nopin_timeout.attr,
 442         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 443         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 444         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 445         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 446         NULL,
 447 };
 448
 449 /* End items for lio_target_nacl_attrib_cit */
 450
 451 /* Start items for lio_target_nacl_auth_cit */
 452
 453 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 454 static ssize_t __iscsi_##prefix##_show_##name(                          \
 455         struct iscsi_node_acl *nacl,                                    \
 456         char *page)                                                     \
 457 {                                                                       \
 458         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 459                                                                         \
 460         if (!capable(CAP_SYS_ADMIN))                                    \
 461                 return -EPERM;                                          \
 462         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 463 }                                                                       \
 464                                                                         \
 465 static ssize_t __iscsi_##prefix##_store_##name(                         \
 466         struct iscsi_node_acl *nacl,                                    \
 467         const char *page,                                               \
 468         size_t count)                                                   \
 469 {                                                                       \
 470         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 471                                                                         \
 472         if (!capable(CAP_SYS_ADMIN))                                    \
 473                 return -EPERM;                                          \
 474         if (count >= sizeof(auth->name))                                \
 475                 return -EINVAL;                                         \
 476         snprintf(auth->name, sizeof(auth->name), "%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                 rb += sprintf(page+rb, "InitiatorName: %s\n",
 670                         sess->sess_ops->InitiatorName);
 671                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 672                         sess->sess_ops->InitiatorAlias);
 673
 674                 rb += sprintf(page+rb,
 675                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
 676                               sess->sid, sess->isid, sess->tsih);
 677                 rb += sprintf(page+rb, "SessionType: %s\n",
 678                                 (sess->sess_ops->SessionType) ?
 679                                 "Discovery" : "Normal");
 680                 rb += sprintf(page+rb, "Session State: ");
 681                 switch (sess->session_state) {
 682                 case TARG_SESS_STATE_FREE:
 683                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 684                         break;
 685                 case TARG_SESS_STATE_ACTIVE:
 686                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 687                         break;
 688                 case TARG_SESS_STATE_LOGGED_IN:
 689                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 690                         break;
 691                 case TARG_SESS_STATE_FAILED:
 692                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 693                         break;
 694                 case TARG_SESS_STATE_IN_CONTINUE:
 695                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 696                         break;
 697                 default:
 698                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 699                                         " State!\n");
 700                         break;
 701                 }
 702
 703                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 704                                 " Values]-----------------------\n");
 705                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 706                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 707                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 708                                 "   0x%08x   0x%08x\n",
 709                         sess->cmdsn_window,
 710                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 711                         sess->exp_cmd_sn, sess->max_cmd_sn,
 712                         sess->init_task_tag, sess->targ_xfer_tag);
 713                 rb += sprintf(page+rb, "----------------------[iSCSI"
 714                                 " Connections]-------------------------\n");
 715
 716                 spin_lock(&sess->conn_lock);
 717                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 718                         rb += sprintf(page+rb, "CID: %hu  Connection"
 719                                         " State: ", conn->cid);
 720                         switch (conn->conn_state) {
 721                         case TARG_CONN_STATE_FREE:
 722                                 rb += sprintf(page+rb,
 723                                         "TARG_CONN_STATE_FREE\n");
 724                                 break;
 725                         case TARG_CONN_STATE_XPT_UP:
 726                                 rb += sprintf(page+rb,
 727                                         "TARG_CONN_STATE_XPT_UP\n");
 728                                 break;
 729                         case TARG_CONN_STATE_IN_LOGIN:
 730                                 rb += sprintf(page+rb,
 731                                         "TARG_CONN_STATE_IN_LOGIN\n");
 732                                 break;
 733                         case TARG_CONN_STATE_LOGGED_IN:
 734                                 rb += sprintf(page+rb,
 735                                         "TARG_CONN_STATE_LOGGED_IN\n");
 736                                 break;
 737                         case TARG_CONN_STATE_IN_LOGOUT:
 738                                 rb += sprintf(page+rb,
 739                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 740                                 break;
 741                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 742                                 rb += sprintf(page+rb,
 743                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 744                                 break;
 745                         case TARG_CONN_STATE_CLEANUP_WAIT:
 746                                 rb += sprintf(page+rb,
 747                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 748                                 break;
 749                         default:
 750                                 rb += sprintf(page+rb,
 751                                         "ERROR: Unknown Connection State!\n");
 752                                 break;
 753                         }
 754
 755                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 756                                 (conn->network_transport == ISCSI_TCP) ?
 757                                 "TCP" : "SCTP");
 758                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 759                                 conn->stat_sn);
 760                 }
 761                 spin_unlock(&sess->conn_lock);
 762         }
 763         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 764
 765         return rb;
 766 }
 767
 768 TF_NACL_BASE_ATTR_RO(lio_target, info);
 769
 770 static ssize_t lio_target_nacl_show_cmdsn_depth(
 771         struct se_node_acl *se_nacl,
 772         char *page)
 773 {
 774         return sprintf(page, "%u\n", se_nacl->queue_depth);
 775 }
 776
 777 static ssize_t lio_target_nacl_store_cmdsn_depth(
 778         struct se_node_acl *se_nacl,
 779         const char *page,
 780         size_t count)
 781 {
 782         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 783         struct iscsi_portal_group *tpg = container_of(se_tpg,
 784                         struct iscsi_portal_group, tpg_se_tpg);
 785         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 786         u32 cmdsn_depth = 0;
 787         int ret;
 788
 789         ret = kstrtou32(page, 0, &cmdsn_depth);
 790         if (ret)
 791                 return ret;
 792         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 793                 pr_err("Passed cmdsn_depth: %u exceeds"
 794                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 795                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 796                 return -EINVAL;
 797         }
 798         acl_ci = &se_nacl->acl_group.cg_item;
 799         if (!acl_ci) {
 800                 pr_err("Unable to locatel acl_ci\n");
 801                 return -EINVAL;
 802         }
 803         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 804         if (!tpg_ci) {
 805                 pr_err("Unable to locate tpg_ci\n");
 806                 return -EINVAL;
 807         }
 808         wwn_ci = &tpg_ci->ci_group->cg_item;
 809         if (!wwn_ci) {
 810                 pr_err("Unable to locate config_item wwn_ci\n");
 811                 return -EINVAL;
 812         }
 813
 814         if (iscsit_get_tpg(tpg) < 0)
 815                 return -EINVAL;
 816         /*
 817          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 818          */
 819         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 820                                 config_item_name(acl_ci), cmdsn_depth, 1);
 821
 822         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 823                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 824                 config_item_name(tpg_ci), cmdsn_depth,
 825                 config_item_name(acl_ci));
 826
 827         iscsit_put_tpg(tpg);
 828         return (!ret) ? count : (ssize_t)ret;
 829 }
 830
 831 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 832
 833 static ssize_t lio_target_nacl_show_tag(
 834         struct se_node_acl *se_nacl,
 835         char *page)
 836 {
 837         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 838 }
 839
 840 static ssize_t lio_target_nacl_store_tag(
 841         struct se_node_acl *se_nacl,
 842         const char *page,
 843         size_t count)
 844 {
 845         int ret;
 846
 847         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 848
 849         if (ret < 0)
 850                 return ret;
 851         return count;
 852 }
 853
 854 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 855
 856 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 857         &lio_target_nacl_info.attr,
 858         &lio_target_nacl_cmdsn_depth.attr,
 859         &lio_target_nacl_tag.attr,
 860         NULL,
 861 };
 862
 863 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
 864                 const char *name)
 865 {
 866         struct iscsi_node_acl *acl =
 867                 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 868         struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
 869
 870         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 871                                 GFP_KERNEL);
 872         if (!stats_cg->default_groups) {
 873                 pr_err("Unable to allocate memory for"
 874                                 " stats_cg->default_groups\n");
 875                 return -ENOMEM;
 876         }
 877
 878         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 879         stats_cg->default_groups[1] = NULL;
 880         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 881                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 882
 883         return 0;
 884 }
 885
 886 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
 887 {
 888         struct iscsi_node_acl *acl = container_of(se_nacl,
 889                         struct iscsi_node_acl, se_node_acl);
 890         struct config_item *df_item;
 891         struct config_group *stats_cg;
 892         int i;
 893
 894         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 895         for (i = 0; stats_cg->default_groups[i]; i++) {
 896                 df_item = &stats_cg->default_groups[i]->cg_item;
 897                 stats_cg->default_groups[i] = NULL;
 898                 config_item_put(df_item);
 899         }
 900         kfree(stats_cg->default_groups);
 901 }
 902
 903 /* End items for lio_target_acl_cit */
 904
 905 /* Start items for lio_target_tpg_attrib_cit */
 906
 907 #define DEF_TPG_ATTRIB(name)                                            \
 908                                                                         \
 909 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 910         struct se_portal_group *se_tpg,                         \
 911         char *page)                                                     \
 912 {                                                                       \
 913         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 914                         struct iscsi_portal_group, tpg_se_tpg); \
 915         ssize_t rb;                                                     \
 916                                                                         \
 917         if (iscsit_get_tpg(tpg) < 0)                                    \
 918                 return -EINVAL;                                         \
 919                                                                         \
 920         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 921         iscsit_put_tpg(tpg);                                            \
 922         return rb;                                                      \
 923 }                                                                       \
 924                                                                         \
 925 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 926         struct se_portal_group *se_tpg,                         \
 927         const char *page,                                               \
 928         size_t count)                                                   \
 929 {                                                                       \
 930         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 931                         struct iscsi_portal_group, tpg_se_tpg); \
 932         u32 val;                                                        \
 933         int ret;                                                        \
 934                                                                         \
 935         if (iscsit_get_tpg(tpg) < 0)                                    \
 936                 return -EINVAL;                                         \
 937                                                                         \
 938         ret = kstrtou32(page, 0, &val);                                 \
 939         if (ret)                                                        \
 940                 goto out;                                               \
 941         ret = iscsit_ta_##name(tpg, val);                               \
 942         if (ret < 0)                                                    \
 943                 goto out;                                               \
 944                                                                         \
 945         iscsit_put_tpg(tpg);                                            \
 946         return count;                                                   \
 947 out:                                                                    \
 948         iscsit_put_tpg(tpg);                                            \
 949         return ret;                                                     \
 950 }
 951
 952 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 953
 954 /*
 955  * Define iscsi_tpg_attrib_s_authentication
 956  */
 957 DEF_TPG_ATTRIB(authentication);
 958 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
 959 /*
 960  * Define iscsi_tpg_attrib_s_login_timeout
 961  */
 962 DEF_TPG_ATTRIB(login_timeout);
 963 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
 964 /*
 965  * Define iscsi_tpg_attrib_s_netif_timeout
 966  */
 967 DEF_TPG_ATTRIB(netif_timeout);
 968 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
 969 /*
 970  * Define iscsi_tpg_attrib_s_generate_node_acls
 971  */
 972 DEF_TPG_ATTRIB(generate_node_acls);
 973 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 974 /*
 975  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
 976  */
 977 DEF_TPG_ATTRIB(default_cmdsn_depth);
 978 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
 979 /*
 980  Define iscsi_tpg_attrib_s_cache_dynamic_acls
 981  */
 982 DEF_TPG_ATTRIB(cache_dynamic_acls);
 983 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 984 /*
 985  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
 986  */
 987 DEF_TPG_ATTRIB(demo_mode_write_protect);
 988 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 989 /*
 990  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
 991  */
 992 DEF_TPG_ATTRIB(prod_mode_write_protect);
 993 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 994 /*
 995  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
 996  */
 997 DEF_TPG_ATTRIB(demo_mode_discovery);
 998 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
 999 /*
1000  * Define iscsi_tpg_attrib_s_default_erl
1001  */
1002 DEF_TPG_ATTRIB(default_erl);
1003 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1004 /*
1005  * Define iscsi_tpg_attrib_s_t10_pi
1006  */
1007 DEF_TPG_ATTRIB(t10_pi);
1008 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1009 /*
1010  * Define iscsi_tpg_attrib_s_fabric_prot_type
1011  */
1012 DEF_TPG_ATTRIB(fabric_prot_type);
1013 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR);
1014
1015 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1016         &iscsi_tpg_attrib_authentication.attr,
1017         &iscsi_tpg_attrib_login_timeout.attr,
1018         &iscsi_tpg_attrib_netif_timeout.attr,
1019         &iscsi_tpg_attrib_generate_node_acls.attr,
1020         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1021         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1022         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1023         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1024         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1025         &iscsi_tpg_attrib_default_erl.attr,
1026         &iscsi_tpg_attrib_t10_pi.attr,
1027         &iscsi_tpg_attrib_fabric_prot_type.attr,
1028         NULL,
1029 };
1030
1031 /* End items for lio_target_tpg_attrib_cit */
1032
1033 /* Start items for lio_target_tpg_auth_cit */
1034
1035 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1036 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1037         struct se_portal_group *se_tpg,                                         \
1038         char *page)                                                             \
1039 {                                                                               \
1040         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1041                                 struct iscsi_portal_group, tpg_se_tpg);         \
1042         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1043                                                                                 \
1044         if (!capable(CAP_SYS_ADMIN))                                            \
1045                 return -EPERM;                                                  \
1046                                                                                 \
1047         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1048 }                                                                               \
1049                                                                                 \
1050 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1051         struct se_portal_group *se_tpg,                                         \
1052         const char *page,                                                       \
1053         size_t count)                                                           \
1054 {                                                                               \
1055         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1056                                 struct iscsi_portal_group, tpg_se_tpg);         \
1057         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1058                                                                                 \
1059         if (!capable(CAP_SYS_ADMIN))                                            \
1060                 return -EPERM;                                                  \
1061                                                                                 \
1062         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1063         if (!(strncmp("NULL", auth->name, 4)))                                  \
1064                 auth->naf_flags &= ~flags;                                      \
1065         else                                                                    \
1066                 auth->naf_flags |= flags;                                       \
1067                                                                                 \
1068         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1069             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1070                 auth->authenticate_target = 1;                                  \
1071         else                                                                    \
1072                 auth->authenticate_target = 0;                                  \
1073                                                                                 \
1074         return count;                                                           \
1075 }
1076
1077 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1078 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1079         struct se_portal_group *se_tpg,                                         \
1080         char *page)                                                             \
1081 {                                                                               \
1082         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1083                                 struct iscsi_portal_group, tpg_se_tpg);         \
1084         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1085                                                                                 \
1086         if (!capable(CAP_SYS_ADMIN))                                            \
1087                 return -EPERM;                                                  \
1088                                                                                 \
1089         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1090 }
1091
1092 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1093         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1094 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1095         struct se_portal_group *se_tpg,                                         \
1096         char *page)                                                             \
1097 {                                                                               \
1098         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1099 }                                                                               \
1100                                                                                 \
1101 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1102         struct se_portal_group *se_tpg,                                         \
1103         const char *page,                                                       \
1104         size_t count)                                                           \
1105 {                                                                               \
1106         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1107 }
1108
1109 #define DEF_TPG_AUTH_INT(name)                                                  \
1110         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1111 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1112         struct se_portal_group *se_tpg,                                         \
1113         char *page)                                                             \
1114 {                                                                               \
1115         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1116 }
1117
1118 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1119 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1120
1121 /*
1122  *  * One-way authentication userid
1123  *   */
1124 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1125 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1126 /*
1127  *  * One-way authentication password
1128  *   */
1129 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1130 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1131 /*
1132  *  * Enforce mutual authentication
1133  *   */
1134 DEF_TPG_AUTH_INT(authenticate_target);
1135 TPG_AUTH_ATTR_RO(authenticate_target);
1136 /*
1137  *  * Mutual authentication userid
1138  *   */
1139 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1140 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1141 /*
1142  *  * Mutual authentication password
1143  *   */
1144 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1145 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1146
1147 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1148         &iscsi_tpg_auth_userid.attr,
1149         &iscsi_tpg_auth_password.attr,
1150         &iscsi_tpg_auth_authenticate_target.attr,
1151         &iscsi_tpg_auth_userid_mutual.attr,
1152         &iscsi_tpg_auth_password_mutual.attr,
1153         NULL,
1154 };
1155
1156 /* End items for lio_target_tpg_auth_cit */
1157
1158 /* Start items for lio_target_tpg_param_cit */
1159
1160 #define DEF_TPG_PARAM(name)                                             \
1161 static ssize_t iscsi_tpg_param_show_##name(                             \
1162         struct se_portal_group *se_tpg,                                 \
1163         char *page)                                                     \
1164 {                                                                       \
1165         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1166                         struct iscsi_portal_group, tpg_se_tpg);         \
1167         struct iscsi_param *param;                                      \
1168         ssize_t rb;                                                     \
1169                                                                         \
1170         if (iscsit_get_tpg(tpg) < 0)                                    \
1171                 return -EINVAL;                                         \
1172                                                                         \
1173         param = iscsi_find_param_from_key(__stringify(name),            \
1174                                 tpg->param_list);                       \
1175         if (!param) {                                                   \
1176                 iscsit_put_tpg(tpg);                                    \
1177                 return -EINVAL;                                         \
1178         }                                                               \
1179         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1180                                                                         \
1181         iscsit_put_tpg(tpg);                                            \
1182         return rb;                                                      \
1183 }                                                                       \
1184 static ssize_t iscsi_tpg_param_store_##name(                            \
1185         struct se_portal_group *se_tpg,                         \
1186         const char *page,                                               \
1187         size_t count)                                                   \
1188 {                                                                       \
1189         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1190                         struct iscsi_portal_group, tpg_se_tpg);         \
1191         char *buf;                                                      \
1192         int ret, len;                                                   \
1193                                                                         \
1194         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1195         if (!buf)                                                       \
1196                 return -ENOMEM;                                         \
1197         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1198         if (isspace(buf[len-1]))                                        \
1199                 buf[len-1] = '\0'; /* Kill newline */                   \
1200                                                                         \
1201         if (iscsit_get_tpg(tpg) < 0) {                                  \
1202                 kfree(buf);                                             \
1203                 return -EINVAL;                                         \
1204         }                                                               \
1205                                                                         \
1206         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1207         if (ret < 0)                                                    \
1208                 goto out;                                               \
1209                                                                         \
1210         kfree(buf);                                                     \
1211         iscsit_put_tpg(tpg);                                            \
1212         return count;                                                   \
1213 out:                                                                    \
1214         kfree(buf);                                                     \
1215         iscsit_put_tpg(tpg);                                            \
1216         return -EINVAL;                                         \
1217 }
1218
1219 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1220
1221 DEF_TPG_PARAM(AuthMethod);
1222 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1223
1224 DEF_TPG_PARAM(HeaderDigest);
1225 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1226
1227 DEF_TPG_PARAM(DataDigest);
1228 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1229
1230 DEF_TPG_PARAM(MaxConnections);
1231 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1232
1233 DEF_TPG_PARAM(TargetAlias);
1234 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1235
1236 DEF_TPG_PARAM(InitialR2T);
1237 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1238
1239 DEF_TPG_PARAM(ImmediateData);
1240 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1241
1242 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1243 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1244
1245 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1246 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1247
1248 DEF_TPG_PARAM(MaxBurstLength);
1249 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1250
1251 DEF_TPG_PARAM(FirstBurstLength);
1252 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1253
1254 DEF_TPG_PARAM(DefaultTime2Wait);
1255 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1256
1257 DEF_TPG_PARAM(DefaultTime2Retain);
1258 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1259
1260 DEF_TPG_PARAM(MaxOutstandingR2T);
1261 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1262
1263 DEF_TPG_PARAM(DataPDUInOrder);
1264 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1265
1266 DEF_TPG_PARAM(DataSequenceInOrder);
1267 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1268
1269 DEF_TPG_PARAM(ErrorRecoveryLevel);
1270 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1271
1272 DEF_TPG_PARAM(IFMarker);
1273 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1274
1275 DEF_TPG_PARAM(OFMarker);
1276 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1277
1278 DEF_TPG_PARAM(IFMarkInt);
1279 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1280
1281 DEF_TPG_PARAM(OFMarkInt);
1282 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1283
1284 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1285         &iscsi_tpg_param_AuthMethod.attr,
1286         &iscsi_tpg_param_HeaderDigest.attr,
1287         &iscsi_tpg_param_DataDigest.attr,
1288         &iscsi_tpg_param_MaxConnections.attr,
1289         &iscsi_tpg_param_TargetAlias.attr,
1290         &iscsi_tpg_param_InitialR2T.attr,
1291         &iscsi_tpg_param_ImmediateData.attr,
1292         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1293         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1294         &iscsi_tpg_param_MaxBurstLength.attr,
1295         &iscsi_tpg_param_FirstBurstLength.attr,
1296         &iscsi_tpg_param_DefaultTime2Wait.attr,
1297         &iscsi_tpg_param_DefaultTime2Retain.attr,
1298         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1299         &iscsi_tpg_param_DataPDUInOrder.attr,
1300         &iscsi_tpg_param_DataSequenceInOrder.attr,
1301         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1302         &iscsi_tpg_param_IFMarker.attr,
1303         &iscsi_tpg_param_OFMarker.attr,
1304         &iscsi_tpg_param_IFMarkInt.attr,
1305         &iscsi_tpg_param_OFMarkInt.attr,
1306         NULL,
1307 };
1308
1309 /* End items for lio_target_tpg_param_cit */
1310
1311 /* Start items for lio_target_tpg_cit */
1312
1313 static ssize_t lio_target_tpg_show_enable(
1314         struct se_portal_group *se_tpg,
1315         char *page)
1316 {
1317         struct iscsi_portal_group *tpg = container_of(se_tpg,
1318                         struct iscsi_portal_group, tpg_se_tpg);
1319         ssize_t len;
1320
1321         spin_lock(&tpg->tpg_state_lock);
1322         len = sprintf(page, "%d\n",
1323                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1324         spin_unlock(&tpg->tpg_state_lock);
1325
1326         return len;
1327 }
1328
1329 static ssize_t lio_target_tpg_store_enable(
1330         struct se_portal_group *se_tpg,
1331         const char *page,
1332         size_t count)
1333 {
1334         struct iscsi_portal_group *tpg = container_of(se_tpg,
1335                         struct iscsi_portal_group, tpg_se_tpg);
1336         u32 op;
1337         int ret;
1338
1339         ret = kstrtou32(page, 0, &op);
1340         if (ret)
1341                 return ret;
1342         if ((op != 1) && (op != 0)) {
1343                 pr_err("Illegal value for tpg_enable: %u\n", op);
1344                 return -EINVAL;
1345         }
1346
1347         ret = iscsit_get_tpg(tpg);
1348         if (ret < 0)
1349                 return -EINVAL;
1350
1351         if (op) {
1352                 ret = iscsit_tpg_enable_portal_group(tpg);
1353                 if (ret < 0)
1354                         goto out;
1355         } else {
1356                 /*
1357                  * iscsit_tpg_disable_portal_group() assumes force=1
1358                  */
1359                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1360                 if (ret < 0)
1361                         goto out;
1362         }
1363
1364         iscsit_put_tpg(tpg);
1365         return count;
1366 out:
1367         iscsit_put_tpg(tpg);
1368         return -EINVAL;
1369 }
1370
1371 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1372
1373 static ssize_t lio_target_tpg_show_dynamic_sessions(
1374         struct se_portal_group *se_tpg,
1375         char *page)
1376 {
1377         return target_show_dynamic_sessions(se_tpg, page);
1378 }
1379
1380 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
1381
1382 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1383         &lio_target_tpg_enable.attr,
1384         &lio_target_tpg_dynamic_sessions.attr,
1385         NULL,
1386 };
1387
1388 /* End items for lio_target_tpg_cit */
1389
1390 /* Start items for lio_target_tiqn_cit */
1391
1392 static struct se_portal_group *lio_target_tiqn_addtpg(
1393         struct se_wwn *wwn,
1394         struct config_group *group,
1395         const char *name)
1396 {
1397         struct iscsi_portal_group *tpg;
1398         struct iscsi_tiqn *tiqn;
1399         char *tpgt_str;
1400         int ret;
1401         u16 tpgt;
1402
1403         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1404         /*
1405          * Only tpgt_# directory groups can be created below
1406          * target/iscsi/iqn.superturodiskarry/
1407          */
1408         tpgt_str = strstr(name, "tpgt_");
1409         if (!tpgt_str) {
1410                 pr_err("Unable to locate \"tpgt_#\" directory"
1411                                 " group\n");
1412                 return NULL;
1413         }
1414         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1415         ret = kstrtou16(tpgt_str, 0, &tpgt);
1416         if (ret)
1417                 return NULL;
1418
1419         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1420         if (!tpg)
1421                 return NULL;
1422
1423         ret = core_tpg_register(&iscsi_ops, wwn, &tpg->tpg_se_tpg,
1424                                 tpg, TRANSPORT_TPG_TYPE_NORMAL);
1425         if (ret < 0)
1426                 return NULL;
1427
1428         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1429         if (ret != 0)
1430                 goto out;
1431
1432         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1433         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1434                         name);
1435         return &tpg->tpg_se_tpg;
1436 out:
1437         core_tpg_deregister(&tpg->tpg_se_tpg);
1438         kfree(tpg);
1439         return NULL;
1440 }
1441
1442 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1443 {
1444         struct iscsi_portal_group *tpg;
1445         struct iscsi_tiqn *tiqn;
1446
1447         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1448         tiqn = tpg->tpg_tiqn;
1449         /*
1450          * iscsit_tpg_del_portal_group() assumes force=1
1451          */
1452         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1453         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1454 }
1455
1456 /* End items for lio_target_tiqn_cit */
1457
1458 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1459
1460 static ssize_t lio_target_wwn_show_attr_lio_version(
1461         struct target_fabric_configfs *tf,
1462         char *page)
1463 {
1464         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1465 }
1466
1467 TF_WWN_ATTR_RO(lio_target, lio_version);
1468
1469 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1470         &lio_target_wwn_lio_version.attr,
1471         NULL,
1472 };
1473
1474 static struct se_wwn *lio_target_call_coreaddtiqn(
1475         struct target_fabric_configfs *tf,
1476         struct config_group *group,
1477         const char *name)
1478 {
1479         struct config_group *stats_cg;
1480         struct iscsi_tiqn *tiqn;
1481
1482         tiqn = iscsit_add_tiqn((unsigned char *)name);
1483         if (IS_ERR(tiqn))
1484                 return ERR_CAST(tiqn);
1485         /*
1486          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1487          */
1488         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1489
1490         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1491                                 GFP_KERNEL);
1492         if (!stats_cg->default_groups) {
1493                 pr_err("Unable to allocate memory for"
1494                                 " stats_cg->default_groups\n");
1495                 iscsit_del_tiqn(tiqn);
1496                 return ERR_PTR(-ENOMEM);
1497         }
1498
1499         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1500         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1501         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1502         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1503         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1504         stats_cg->default_groups[5] = NULL;
1505         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1506                         "iscsi_instance", &iscsi_stat_instance_cit);
1507         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1508                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1509         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1510                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1511         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1512                         "iscsi_login_stats", &iscsi_stat_login_cit);
1513         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1514                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1515
1516         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1517         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1518                         " %s\n", name);
1519         return &tiqn->tiqn_wwn;
1520 }
1521
1522 static void lio_target_call_coredeltiqn(
1523         struct se_wwn *wwn)
1524 {
1525         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1526         struct config_item *df_item;
1527         struct config_group *stats_cg;
1528         int i;
1529
1530         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1531         for (i = 0; stats_cg->default_groups[i]; i++) {
1532                 df_item = &stats_cg->default_groups[i]->cg_item;
1533                 stats_cg->default_groups[i] = NULL;
1534                 config_item_put(df_item);
1535         }
1536         kfree(stats_cg->default_groups);
1537
1538         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1539                         tiqn->tiqn);
1540         iscsit_del_tiqn(tiqn);
1541 }
1542
1543 /* End LIO-Target TIQN struct contig_lio_target_cit */
1544
1545 /* Start lio_target_discovery_auth_cit */
1546
1547 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1548         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1549 static ssize_t iscsi_disc_show_##name(                                  \
1550         struct target_fabric_configfs *tf,                              \
1551         char *page)                                                     \
1552 {                                                                       \
1553         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1554                 page);                                                  \
1555 }                                                                       \
1556 static ssize_t iscsi_disc_store_##name(                                 \
1557         struct target_fabric_configfs *tf,                              \
1558         const char *page,                                               \
1559         size_t count)                                                   \
1560 {                                                                       \
1561         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1562                 page, count);                                           \
1563 }
1564
1565 #define DEF_DISC_AUTH_INT(name)                                         \
1566         __DEF_NACL_AUTH_INT(disc, name)                                 \
1567 static ssize_t iscsi_disc_show_##name(                                  \
1568         struct target_fabric_configfs *tf,                              \
1569         char *page)                                                     \
1570 {                                                                       \
1571         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1572                         page);                                          \
1573 }
1574
1575 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1576 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1577
1578 /*
1579  * One-way authentication userid
1580  */
1581 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1582 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1583 /*
1584  * One-way authentication password
1585  */
1586 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1587 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1588 /*
1589  * Enforce mutual authentication
1590  */
1591 DEF_DISC_AUTH_INT(authenticate_target);
1592 DISC_AUTH_ATTR_RO(authenticate_target);
1593 /*
1594  * Mutual authentication userid
1595  */
1596 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1597 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1598 /*
1599  * Mutual authentication password
1600  */
1601 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1602 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1603
1604 /*
1605  * enforce_discovery_auth
1606  */
1607 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1608         struct target_fabric_configfs *tf,
1609         char *page)
1610 {
1611         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1612
1613         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1614 }
1615
1616 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1617         struct target_fabric_configfs *tf,
1618         const char *page,
1619         size_t count)
1620 {
1621         struct iscsi_param *param;
1622         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1623         u32 op;
1624         int err;
1625
1626         err = kstrtou32(page, 0, &op);
1627         if (err)
1628                 return -EINVAL;
1629         if ((op != 1) && (op != 0)) {
1630                 pr_err("Illegal value for enforce_discovery_auth:"
1631                                 " %u\n", op);
1632                 return -EINVAL;
1633         }
1634
1635         if (!discovery_tpg) {
1636                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1637                 return -EINVAL;
1638         }
1639
1640         param = iscsi_find_param_from_key(AUTHMETHOD,
1641                                 discovery_tpg->param_list);
1642         if (!param)
1643                 return -EINVAL;
1644
1645         if (op) {
1646                 /*
1647                  * Reset the AuthMethod key to CHAP.
1648                  */
1649                 if (iscsi_update_param_value(param, CHAP) < 0)
1650                         return -EINVAL;
1651
1652                 discovery_tpg->tpg_attrib.authentication = 1;
1653                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1654                 pr_debug("LIO-CORE[0] Successfully enabled"
1655                         " authentication enforcement for iSCSI"
1656                         " Discovery TPG\n");
1657         } else {
1658                 /*
1659                  * Reset the AuthMethod key to CHAP,None
1660                  */
1661                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1662                         return -EINVAL;
1663
1664                 discovery_tpg->tpg_attrib.authentication = 0;
1665                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1666                 pr_debug("LIO-CORE[0] Successfully disabled"
1667                         " authentication enforcement for iSCSI"
1668                         " Discovery TPG\n");
1669         }
1670
1671         return count;
1672 }
1673
1674 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1675
1676 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1677         &iscsi_disc_userid.attr,
1678         &iscsi_disc_password.attr,
1679         &iscsi_disc_authenticate_target.attr,
1680         &iscsi_disc_userid_mutual.attr,
1681         &iscsi_disc_password_mutual.attr,
1682         &iscsi_disc_enforce_discovery_auth.attr,
1683         NULL,
1684 };
1685
1686 /* End lio_target_discovery_auth_cit */
1687
1688 /* Start functions for target_core_fabric_ops */
1689
1690 static char *iscsi_get_fabric_name(void)
1691 {
1692         return "iSCSI";
1693 }
1694
1695 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1696 {
1697         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1698
1699         /* only used for printks or comparism with ->ref_task_tag */
1700         return (__force u32)cmd->init_task_tag;
1701 }
1702
1703 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1704 {
1705         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1706
1707         return cmd->i_state;
1708 }
1709
1710 static u32 lio_sess_get_index(struct se_session *se_sess)
1711 {
1712         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1713
1714         return sess->session_index;
1715 }
1716
1717 static u32 lio_sess_get_initiator_sid(
1718         struct se_session *se_sess,
1719         unsigned char *buf,
1720         u32 size)
1721 {
1722         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1723         /*
1724          * iSCSI Initiator Session Identifier from RFC-3720.
1725          */
1726         return snprintf(buf, size, "%6phN", sess->isid);
1727 }
1728
1729 static int lio_queue_data_in(struct se_cmd *se_cmd)
1730 {
1731         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1732
1733         cmd->i_state = ISTATE_SEND_DATAIN;
1734         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1735
1736         return 0;
1737 }
1738
1739 static int lio_write_pending(struct se_cmd *se_cmd)
1740 {
1741         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1742         struct iscsi_conn *conn = cmd->conn;
1743
1744         if (!cmd->immediate_data && !cmd->unsolicited_data)
1745                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1746
1747         return 0;
1748 }
1749
1750 static int lio_write_pending_status(struct se_cmd *se_cmd)
1751 {
1752         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1753         int ret;
1754
1755         spin_lock_bh(&cmd->istate_lock);
1756         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1757         spin_unlock_bh(&cmd->istate_lock);
1758
1759         return ret;
1760 }
1761
1762 static int lio_queue_status(struct se_cmd *se_cmd)
1763 {
1764         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1765
1766         cmd->i_state = ISTATE_SEND_STATUS;
1767
1768         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1769                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1770                 return 0;
1771         }
1772         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1773
1774         return 0;
1775 }
1776
1777 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1778 {
1779         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1780
1781         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1782         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1783 }
1784
1785 static void lio_aborted_task(struct se_cmd *se_cmd)
1786 {
1787         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1788
1789         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1790 }
1791
1792 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1793 {
1794         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1795
1796         return &tpg->tpg_tiqn->tiqn[0];
1797 }
1798
1799 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1800 {
1801         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1802
1803         return tpg->tpgt;
1804 }
1805
1806 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1807 {
1808         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1809
1810         return tpg->tpg_attrib.default_cmdsn_depth;
1811 }
1812
1813 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1814 {
1815         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1816
1817         return tpg->tpg_attrib.generate_node_acls;
1818 }
1819
1820 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1821 {
1822         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1823
1824         return tpg->tpg_attrib.cache_dynamic_acls;
1825 }
1826
1827 static int lio_tpg_check_demo_mode_write_protect(
1828         struct se_portal_group *se_tpg)
1829 {
1830         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1831
1832         return tpg->tpg_attrib.demo_mode_write_protect;
1833 }
1834
1835 static int lio_tpg_check_prod_mode_write_protect(
1836         struct se_portal_group *se_tpg)
1837 {
1838         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1839
1840         return tpg->tpg_attrib.prod_mode_write_protect;
1841 }
1842
1843 static int lio_tpg_check_prot_fabric_only(
1844         struct se_portal_group *se_tpg)
1845 {
1846         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1847         /*
1848          * Only report fabric_prot_type if t10_pi has also been enabled
1849          * for incoming ib_isert sessions.
1850          */
1851         if (!tpg->tpg_attrib.t10_pi)
1852                 return 0;
1853
1854         return tpg->tpg_attrib.fabric_prot_type;
1855 }
1856
1857 /*
1858  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1859  *
1860  * Also, this function calls iscsit_inc_session_usage_count() on the
1861  * struct iscsi_session in question.
1862  */
1863 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1864 {
1865         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1866
1867         spin_lock(&sess->conn_lock);
1868         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1869             atomic_read(&sess->session_logout) ||
1870             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1871                 spin_unlock(&sess->conn_lock);
1872                 return 0;
1873         }
1874         atomic_set(&sess->session_reinstatement, 1);
1875         spin_unlock(&sess->conn_lock);
1876
1877         iscsit_stop_time2retain_timer(sess);
1878         iscsit_stop_session(sess, 1, 1);
1879
1880         return 1;
1881 }
1882
1883 /*
1884  * Calls iscsit_dec_session_usage_count() as inverse of
1885  * lio_tpg_shutdown_session()
1886  */
1887 static void lio_tpg_close_session(struct se_session *se_sess)
1888 {
1889         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1890         /*
1891          * If the iSCSI Session for the iSCSI Initiator Node exists,
1892          * forcefully shutdown the iSCSI NEXUS.
1893          */
1894         iscsit_close_session(sess);
1895 }
1896
1897 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1898 {
1899         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1900
1901         return tpg->tpg_tiqn->tiqn_index;
1902 }
1903
1904 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1905 {
1906         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1907                                 se_node_acl);
1908         struct se_portal_group *se_tpg = se_acl->se_tpg;
1909         struct iscsi_portal_group *tpg = container_of(se_tpg,
1910                                 struct iscsi_portal_group, tpg_se_tpg);
1911
1912         acl->node_attrib.nacl = acl;
1913         iscsit_set_default_node_attribues(acl, tpg);
1914 }
1915
1916 static int lio_check_stop_free(struct se_cmd *se_cmd)
1917 {
1918         return target_put_sess_cmd(se_cmd);
1919 }
1920
1921 static void lio_release_cmd(struct se_cmd *se_cmd)
1922 {
1923         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1924
1925         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1926         iscsit_release_cmd(cmd);
1927 }
1928
1929 const struct target_core_fabric_ops iscsi_ops = {
1930         .module                         = THIS_MODULE,
1931         .name                           = "iscsi",
1932         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1933         .get_fabric_name                = iscsi_get_fabric_name,
1934         .get_fabric_proto_ident         = iscsi_get_fabric_proto_ident,
1935         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1936         .tpg_get_tag                    = lio_tpg_get_tag,
1937         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1938         .tpg_get_pr_transport_id        = iscsi_get_pr_transport_id,
1939         .tpg_get_pr_transport_id_len    = iscsi_get_pr_transport_id_len,
1940         .tpg_parse_pr_out_transport_id  = iscsi_parse_pr_out_transport_id,
1941         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1942         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1943         .tpg_check_demo_mode_write_protect =
1944                         lio_tpg_check_demo_mode_write_protect,
1945         .tpg_check_prod_mode_write_protect =
1946                         lio_tpg_check_prod_mode_write_protect,
1947         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1948         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1949         .check_stop_free                = lio_check_stop_free,
1950         .release_cmd                    = lio_release_cmd,
1951         .shutdown_session               = lio_tpg_shutdown_session,
1952         .close_session                  = lio_tpg_close_session,
1953         .sess_get_index                 = lio_sess_get_index,
1954         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1955         .write_pending                  = lio_write_pending,
1956         .write_pending_status           = lio_write_pending_status,
1957         .set_default_node_attributes    = lio_set_default_node_attributes,
1958         .get_task_tag                   = iscsi_get_task_tag,
1959         .get_cmd_state                  = iscsi_get_cmd_state,
1960         .queue_data_in                  = lio_queue_data_in,
1961         .queue_status                   = lio_queue_status,
1962         .queue_tm_rsp                   = lio_queue_tm_rsp,
1963         .aborted_task                   = lio_aborted_task,
1964         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1965         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1966         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1967         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1968         .fabric_make_np                 = lio_target_call_addnptotpg,
1969         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1970         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1971         .fabric_cleanup_nodeacl         = lio_target_cleanup_nodeacl,
1972
1973         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1974         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1975         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1976         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1977         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1978         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1979         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1980         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1981         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1982         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1983         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1984 };