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/configfs_macros.h>
  28 #include <target/iscsi/iscsi_transport.h>
  29
  30 #include <target/iscsi/iscsi_target_core.h>
  31 #include "iscsi_target_parameters.h"
  32 #include "iscsi_target_device.h"
  33 #include "iscsi_target_erl0.h"
  34 #include "iscsi_target_nodeattrib.h"
  35 #include "iscsi_target_tpg.h"
  36 #include "iscsi_target_util.h"
  37 #include "iscsi_target.h"
  38 #include <target/iscsi/iscsi_target_stat.h>
  39
  40 struct lio_target_configfs_attribute {
  41         struct configfs_attribute attr;
  42         ssize_t (*show)(void *, char *);
  43         ssize_t (*store)(void *, const char *, size_t);
  44 };
  45
  46 /* Start items for lio_target_portal_cit */
  47
  48 static ssize_t lio_target_np_show_sctp(
  49         struct se_tpg_np *se_tpg_np,
  50         char *page)
  51 {
  52         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  53                                 struct iscsi_tpg_np, se_tpg_np);
  54         struct iscsi_tpg_np *tpg_np_sctp;
  55         ssize_t rb;
  56
  57         tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
  58         if (tpg_np_sctp)
  59                 rb = sprintf(page, "1\n");
  60         else
  61                 rb = sprintf(page, "0\n");
  62
  63         return rb;
  64 }
  65
  66 static ssize_t lio_target_np_store_sctp(
  67         struct se_tpg_np *se_tpg_np,
  68         const char *page,
  69         size_t count)
  70 {
  71         struct iscsi_np *np;
  72         struct iscsi_portal_group *tpg;
  73         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
  74                                 struct iscsi_tpg_np, se_tpg_np);
  75         struct iscsi_tpg_np *tpg_np_sctp = NULL;
  76         u32 op;
  77         int ret;
  78
  79         ret = kstrtou32(page, 0, &op);
  80         if (ret)
  81                 return ret;
  82         if ((op != 1) && (op != 0)) {
  83                 pr_err("Illegal value for tpg_enable: %u\n", op);
  84                 return -EINVAL;
  85         }
  86         np = tpg_np->tpg_np;
  87         if (!np) {
  88                 pr_err("Unable to locate struct iscsi_np from"
  89                                 " struct iscsi_tpg_np\n");
  90                 return -EINVAL;
  91         }
  92
  93         tpg = tpg_np->tpg;
  94         if (iscsit_get_tpg(tpg) < 0)
  95                 return -EINVAL;
  96
  97         if (op) {
  98                 /*
  99                  * Use existing np->np_sockaddr for SCTP network portal reference
 100                  */
 101                 tpg_np_sctp = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 102                                         np->np_ip, tpg_np, ISCSI_SCTP_TCP);
 103                 if (!tpg_np_sctp || IS_ERR(tpg_np_sctp))
 104                         goto out;
 105         } else {
 106                 tpg_np_sctp = iscsit_tpg_locate_child_np(tpg_np, ISCSI_SCTP_TCP);
 107                 if (!tpg_np_sctp)
 108                         goto out;
 109
 110                 ret = iscsit_tpg_del_network_portal(tpg, tpg_np_sctp);
 111                 if (ret < 0)
 112                         goto out;
 113         }
 114
 115         iscsit_put_tpg(tpg);
 116         return count;
 117 out:
 118         iscsit_put_tpg(tpg);
 119         return -EINVAL;
 120 }
 121
 122 TF_NP_BASE_ATTR(lio_target, sctp, S_IRUGO | S_IWUSR);
 123
 124 static ssize_t lio_target_np_show_iser(
 125         struct se_tpg_np *se_tpg_np,
 126         char *page)
 127 {
 128         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 129                                 struct iscsi_tpg_np, se_tpg_np);
 130         struct iscsi_tpg_np *tpg_np_iser;
 131         ssize_t rb;
 132
 133         tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 134         if (tpg_np_iser)
 135                 rb = sprintf(page, "1\n");
 136         else
 137                 rb = sprintf(page, "0\n");
 138
 139         return rb;
 140 }
 141
 142 static ssize_t lio_target_np_store_iser(
 143         struct se_tpg_np *se_tpg_np,
 144         const char *page,
 145         size_t count)
 146 {
 147         struct iscsi_np *np;
 148         struct iscsi_portal_group *tpg;
 149         struct iscsi_tpg_np *tpg_np = container_of(se_tpg_np,
 150                                 struct iscsi_tpg_np, se_tpg_np);
 151         struct iscsi_tpg_np *tpg_np_iser = NULL;
 152         char *endptr;
 153         u32 op;
 154         int rc = 0;
 155
 156         op = simple_strtoul(page, &endptr, 0);
 157         if ((op != 1) && (op != 0)) {
 158                 pr_err("Illegal value for tpg_enable: %u\n", op);
 159                 return -EINVAL;
 160         }
 161         np = tpg_np->tpg_np;
 162         if (!np) {
 163                 pr_err("Unable to locate struct iscsi_np from"
 164                                 " struct iscsi_tpg_np\n");
 165                 return -EINVAL;
 166         }
 167
 168         tpg = tpg_np->tpg;
 169         if (iscsit_get_tpg(tpg) < 0)
 170                 return -EINVAL;
 171
 172         if (op) {
 173                 rc = request_module("ib_isert");
 174                 if (rc != 0) {
 175                         pr_warn("Unable to request_module for ib_isert\n");
 176                         rc = 0;
 177                 }
 178
 179                 tpg_np_iser = iscsit_tpg_add_network_portal(tpg, &np->np_sockaddr,
 180                                 np->np_ip, tpg_np, ISCSI_INFINIBAND);
 181                 if (IS_ERR(tpg_np_iser)) {
 182                         rc = PTR_ERR(tpg_np_iser);
 183                         goto out;
 184                 }
 185         } else {
 186                 tpg_np_iser = iscsit_tpg_locate_child_np(tpg_np, ISCSI_INFINIBAND);
 187                 if (tpg_np_iser) {
 188                         rc = iscsit_tpg_del_network_portal(tpg, tpg_np_iser);
 189                         if (rc < 0)
 190                                 goto out;
 191                 }
 192         }
 193
 194         iscsit_put_tpg(tpg);
 195         return count;
 196 out:
 197         iscsit_put_tpg(tpg);
 198         return rc;
 199 }
 200
 201 TF_NP_BASE_ATTR(lio_target, iser, S_IRUGO | S_IWUSR);
 202
 203 static struct configfs_attribute *lio_target_portal_attrs[] = {
 204         &lio_target_np_sctp.attr,
 205         &lio_target_np_iser.attr,
 206         NULL,
 207 };
 208
 209 /* Stop items for lio_target_portal_cit */
 210
 211 /* Start items for lio_target_np_cit */
 212
 213 #define MAX_PORTAL_LEN          256
 214
 215 static struct se_tpg_np *lio_target_call_addnptotpg(
 216         struct se_portal_group *se_tpg,
 217         struct config_group *group,
 218         const char *name)
 219 {
 220         struct iscsi_portal_group *tpg;
 221         struct iscsi_tpg_np *tpg_np;
 222         char *str, *str2, *ip_str, *port_str;
 223         struct __kernel_sockaddr_storage sockaddr;
 224         struct sockaddr_in *sock_in;
 225         struct sockaddr_in6 *sock_in6;
 226         unsigned long port;
 227         int ret;
 228         char buf[MAX_PORTAL_LEN + 1];
 229
 230         if (strlen(name) > MAX_PORTAL_LEN) {
 231                 pr_err("strlen(name): %d exceeds MAX_PORTAL_LEN: %d\n",
 232                         (int)strlen(name), MAX_PORTAL_LEN);
 233                 return ERR_PTR(-EOVERFLOW);
 234         }
 235         memset(buf, 0, MAX_PORTAL_LEN + 1);
 236         snprintf(buf, MAX_PORTAL_LEN + 1, "%s", name);
 237
 238         memset(&sockaddr, 0, sizeof(struct __kernel_sockaddr_storage));
 239
 240         str = strstr(buf, "[");
 241         if (str) {
 242                 const char *end;
 243
 244                 str2 = strstr(str, "]");
 245                 if (!str2) {
 246                         pr_err("Unable to locate trailing \"]\""
 247                                 " in IPv6 iSCSI network portal address\n");
 248                         return ERR_PTR(-EINVAL);
 249                 }
 250                 str++; /* Skip over leading "[" */
 251                 *str2 = '\0'; /* Terminate the IPv6 address */
 252                 str2++; /* Skip over the "]" */
 253                 port_str = strstr(str2, ":");
 254                 if (!port_str) {
 255                         pr_err("Unable to locate \":port\""
 256                                 " in IPv6 iSCSI network portal address\n");
 257                         return ERR_PTR(-EINVAL);
 258                 }
 259                 *port_str = '\0'; /* Terminate string for IP */
 260                 port_str++; /* Skip over ":" */
 261
 262                 ret = kstrtoul(port_str, 0, &port);
 263                 if (ret < 0) {
 264                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 265                         return ERR_PTR(ret);
 266                 }
 267                 sock_in6 = (struct sockaddr_in6 *)&sockaddr;
 268                 sock_in6->sin6_family = AF_INET6;
 269                 sock_in6->sin6_port = htons((unsigned short)port);
 270                 ret = in6_pton(str, IPV6_ADDRESS_SPACE,
 271                                 (void *)&sock_in6->sin6_addr.in6_u, -1, &end);
 272                 if (ret <= 0) {
 273                         pr_err("in6_pton returned: %d\n", ret);
 274                         return ERR_PTR(-EINVAL);
 275                 }
 276         } else {
 277                 str = ip_str = &buf[0];
 278                 port_str = strstr(ip_str, ":");
 279                 if (!port_str) {
 280                         pr_err("Unable to locate \":port\""
 281                                 " in IPv4 iSCSI network portal address\n");
 282                         return ERR_PTR(-EINVAL);
 283                 }
 284                 *port_str = '\0'; /* Terminate string for IP */
 285                 port_str++; /* Skip over ":" */
 286
 287                 ret = kstrtoul(port_str, 0, &port);
 288                 if (ret < 0) {
 289                         pr_err("kstrtoul() failed for port_str: %d\n", ret);
 290                         return ERR_PTR(ret);
 291                 }
 292                 sock_in = (struct sockaddr_in *)&sockaddr;
 293                 sock_in->sin_family = AF_INET;
 294                 sock_in->sin_port = htons((unsigned short)port);
 295                 sock_in->sin_addr.s_addr = in_aton(ip_str);
 296         }
 297         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
 298         ret = iscsit_get_tpg(tpg);
 299         if (ret < 0)
 300                 return ERR_PTR(-EINVAL);
 301
 302         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s TPGT: %hu"
 303                 " PORTAL: %s\n",
 304                 config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 305                 tpg->tpgt, name);
 306         /*
 307          * Assume ISCSI_TCP by default.  Other network portals for other
 308          * iSCSI fabrics:
 309          *
 310          * Traditional iSCSI over SCTP (initial support)
 311          * iSER/TCP (TODO, hardware available)
 312          * iSER/SCTP (TODO, software emulation with osc-iwarp)
 313          * iSER/IB (TODO, hardware available)
 314          *
 315          * can be enabled with attributes under
 316          * sys/kernel/config/iscsi/$IQN/$TPG/np/$IP:$PORT/
 317          *
 318          */
 319         tpg_np = iscsit_tpg_add_network_portal(tpg, &sockaddr, str, NULL,
 320                                 ISCSI_TCP);
 321         if (IS_ERR(tpg_np)) {
 322                 iscsit_put_tpg(tpg);
 323                 return ERR_CAST(tpg_np);
 324         }
 325         pr_debug("LIO_Target_ConfigFS: addnptotpg done!\n");
 326
 327         iscsit_put_tpg(tpg);
 328         return &tpg_np->se_tpg_np;
 329 }
 330
 331 static void lio_target_call_delnpfromtpg(
 332         struct se_tpg_np *se_tpg_np)
 333 {
 334         struct iscsi_portal_group *tpg;
 335         struct iscsi_tpg_np *tpg_np;
 336         struct se_portal_group *se_tpg;
 337         int ret;
 338
 339         tpg_np = container_of(se_tpg_np, struct iscsi_tpg_np, se_tpg_np);
 340         tpg = tpg_np->tpg;
 341         ret = iscsit_get_tpg(tpg);
 342         if (ret < 0)
 343                 return;
 344
 345         se_tpg = &tpg->tpg_se_tpg;
 346         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s TPGT: %hu"
 347                 " PORTAL: %s:%hu\n", config_item_name(&se_tpg->se_tpg_wwn->wwn_group.cg_item),
 348                 tpg->tpgt, tpg_np->tpg_np->np_ip, tpg_np->tpg_np->np_port);
 349
 350         ret = iscsit_tpg_del_network_portal(tpg, tpg_np);
 351         if (ret < 0)
 352                 goto out;
 353
 354         pr_debug("LIO_Target_ConfigFS: delnpfromtpg done!\n");
 355 out:
 356         iscsit_put_tpg(tpg);
 357 }
 358
 359 /* End items for lio_target_np_cit */
 360
 361 /* Start items for lio_target_nacl_attrib_cit */
 362
 363 #define DEF_NACL_ATTRIB(name)                                           \
 364 static ssize_t iscsi_nacl_attrib_show_##name(                           \
 365         struct se_node_acl *se_nacl,                                    \
 366         char *page)                                                     \
 367 {                                                                       \
 368         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 369                                         se_node_acl);                   \
 370                                                                         \
 371         return sprintf(page, "%u\n", nacl->node_attrib.name);           \
 372 }                                                                       \
 373                                                                         \
 374 static ssize_t iscsi_nacl_attrib_store_##name(                          \
 375         struct se_node_acl *se_nacl,                                    \
 376         const char *page,                                               \
 377         size_t count)                                                   \
 378 {                                                                       \
 379         struct iscsi_node_acl *nacl = container_of(se_nacl, struct iscsi_node_acl, \
 380                                         se_node_acl);                   \
 381         u32 val;                                                        \
 382         int ret;                                                        \
 383                                                                         \
 384         ret = kstrtou32(page, 0, &val);                                 \
 385         if (ret)                                                        \
 386                 return ret;                                             \
 387         ret = iscsit_na_##name(nacl, val);                              \
 388         if (ret < 0)                                                    \
 389                 return ret;                                             \
 390                                                                         \
 391         return count;                                                   \
 392 }
 393
 394 #define NACL_ATTR(_name, _mode) TF_NACL_ATTRIB_ATTR(iscsi, _name, _mode);
 395 /*
 396  * Define iscsi_node_attrib_s_dataout_timeout
 397  */
 398 DEF_NACL_ATTRIB(dataout_timeout);
 399 NACL_ATTR(dataout_timeout, S_IRUGO | S_IWUSR);
 400 /*
 401  * Define iscsi_node_attrib_s_dataout_timeout_retries
 402  */
 403 DEF_NACL_ATTRIB(dataout_timeout_retries);
 404 NACL_ATTR(dataout_timeout_retries, S_IRUGO | S_IWUSR);
 405 /*
 406  * Define iscsi_node_attrib_s_default_erl
 407  */
 408 DEF_NACL_ATTRIB(default_erl);
 409 NACL_ATTR(default_erl, S_IRUGO | S_IWUSR);
 410 /*
 411  * Define iscsi_node_attrib_s_nopin_timeout
 412  */
 413 DEF_NACL_ATTRIB(nopin_timeout);
 414 NACL_ATTR(nopin_timeout, S_IRUGO | S_IWUSR);
 415 /*
 416  * Define iscsi_node_attrib_s_nopin_response_timeout
 417  */
 418 DEF_NACL_ATTRIB(nopin_response_timeout);
 419 NACL_ATTR(nopin_response_timeout, S_IRUGO | S_IWUSR);
 420 /*
 421  * Define iscsi_node_attrib_s_random_datain_pdu_offsets
 422  */
 423 DEF_NACL_ATTRIB(random_datain_pdu_offsets);
 424 NACL_ATTR(random_datain_pdu_offsets, S_IRUGO | S_IWUSR);
 425 /*
 426  * Define iscsi_node_attrib_s_random_datain_seq_offsets
 427  */
 428 DEF_NACL_ATTRIB(random_datain_seq_offsets);
 429 NACL_ATTR(random_datain_seq_offsets, S_IRUGO | S_IWUSR);
 430 /*
 431  * Define iscsi_node_attrib_s_random_r2t_offsets
 432  */
 433 DEF_NACL_ATTRIB(random_r2t_offsets);
 434 NACL_ATTR(random_r2t_offsets, S_IRUGO | S_IWUSR);
 435
 436 static struct configfs_attribute *lio_target_nacl_attrib_attrs[] = {
 437         &iscsi_nacl_attrib_dataout_timeout.attr,
 438         &iscsi_nacl_attrib_dataout_timeout_retries.attr,
 439         &iscsi_nacl_attrib_default_erl.attr,
 440         &iscsi_nacl_attrib_nopin_timeout.attr,
 441         &iscsi_nacl_attrib_nopin_response_timeout.attr,
 442         &iscsi_nacl_attrib_random_datain_pdu_offsets.attr,
 443         &iscsi_nacl_attrib_random_datain_seq_offsets.attr,
 444         &iscsi_nacl_attrib_random_r2t_offsets.attr,
 445         NULL,
 446 };
 447
 448 /* End items for lio_target_nacl_attrib_cit */
 449
 450 /* Start items for lio_target_nacl_auth_cit */
 451
 452 #define __DEF_NACL_AUTH_STR(prefix, name, flags)                        \
 453 static ssize_t __iscsi_##prefix##_show_##name(                          \
 454         struct iscsi_node_acl *nacl,                                    \
 455         char *page)                                                     \
 456 {                                                                       \
 457         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 458                                                                         \
 459         if (!capable(CAP_SYS_ADMIN))                                    \
 460                 return -EPERM;                                          \
 461         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);           \
 462 }                                                                       \
 463                                                                         \
 464 static ssize_t __iscsi_##prefix##_store_##name(                         \
 465         struct iscsi_node_acl *nacl,                                    \
 466         const char *page,                                               \
 467         size_t count)                                                   \
 468 {                                                                       \
 469         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 470                                                                         \
 471         if (!capable(CAP_SYS_ADMIN))                                    \
 472                 return -EPERM;                                          \
 473         if (count >= sizeof(auth->name))                                \
 474                 return -EINVAL;                                         \
 475         snprintf(auth->name, sizeof(auth->name), "%s", page);           \
 476         if (!strncmp("NULL", auth->name, 4))                            \
 477                 auth->naf_flags &= ~flags;                              \
 478         else                                                            \
 479                 auth->naf_flags |= flags;                               \
 480                                                                         \
 481         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                    \
 482             (auth->naf_flags & NAF_PASSWORD_IN_SET))                    \
 483                 auth->authenticate_target = 1;                          \
 484         else                                                            \
 485                 auth->authenticate_target = 0;                          \
 486                                                                         \
 487         return count;                                                   \
 488 }
 489
 490 #define __DEF_NACL_AUTH_INT(prefix, name)                               \
 491 static ssize_t __iscsi_##prefix##_show_##name(                          \
 492         struct iscsi_node_acl *nacl,                                    \
 493         char *page)                                                     \
 494 {                                                                       \
 495         struct iscsi_node_auth *auth = &nacl->node_auth;                \
 496                                                                         \
 497         if (!capable(CAP_SYS_ADMIN))                                    \
 498                 return -EPERM;                                          \
 499                                                                         \
 500         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);           \
 501 }
 502
 503 #define DEF_NACL_AUTH_STR(name, flags)                                  \
 504         __DEF_NACL_AUTH_STR(nacl_auth, name, flags)                     \
 505 static ssize_t iscsi_nacl_auth_show_##name(                             \
 506         struct se_node_acl *nacl,                                       \
 507         char *page)                                                     \
 508 {                                                                       \
 509         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 510                         struct iscsi_node_acl, se_node_acl), page);             \
 511 }                                                                       \
 512 static ssize_t iscsi_nacl_auth_store_##name(                            \
 513         struct se_node_acl *nacl,                                       \
 514         const char *page,                                               \
 515         size_t count)                                                   \
 516 {                                                                       \
 517         return __iscsi_nacl_auth_store_##name(container_of(nacl,        \
 518                         struct iscsi_node_acl, se_node_acl), page, count);      \
 519 }
 520
 521 #define DEF_NACL_AUTH_INT(name)                                         \
 522         __DEF_NACL_AUTH_INT(nacl_auth, name)                            \
 523 static ssize_t iscsi_nacl_auth_show_##name(                             \
 524         struct se_node_acl *nacl,                                       \
 525         char *page)                                                     \
 526 {                                                                       \
 527         return __iscsi_nacl_auth_show_##name(container_of(nacl,         \
 528                         struct iscsi_node_acl, se_node_acl), page);             \
 529 }
 530
 531 #define AUTH_ATTR(_name, _mode) TF_NACL_AUTH_ATTR(iscsi, _name, _mode);
 532 #define AUTH_ATTR_RO(_name) TF_NACL_AUTH_ATTR_RO(iscsi, _name);
 533
 534 /*
 535  * One-way authentication userid
 536  */
 537 DEF_NACL_AUTH_STR(userid, NAF_USERID_SET);
 538 AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
 539 /*
 540  * One-way authentication password
 541  */
 542 DEF_NACL_AUTH_STR(password, NAF_PASSWORD_SET);
 543 AUTH_ATTR(password, S_IRUGO | S_IWUSR);
 544 /*
 545  * Enforce mutual authentication
 546  */
 547 DEF_NACL_AUTH_INT(authenticate_target);
 548 AUTH_ATTR_RO(authenticate_target);
 549 /*
 550  * Mutual authentication userid
 551  */
 552 DEF_NACL_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
 553 AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
 554 /*
 555  * Mutual authentication password
 556  */
 557 DEF_NACL_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
 558 AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
 559
 560 static struct configfs_attribute *lio_target_nacl_auth_attrs[] = {
 561         &iscsi_nacl_auth_userid.attr,
 562         &iscsi_nacl_auth_password.attr,
 563         &iscsi_nacl_auth_authenticate_target.attr,
 564         &iscsi_nacl_auth_userid_mutual.attr,
 565         &iscsi_nacl_auth_password_mutual.attr,
 566         NULL,
 567 };
 568
 569 /* End items for lio_target_nacl_auth_cit */
 570
 571 /* Start items for lio_target_nacl_param_cit */
 572
 573 #define DEF_NACL_PARAM(name)                                            \
 574 static ssize_t iscsi_nacl_param_show_##name(                            \
 575         struct se_node_acl *se_nacl,                                    \
 576         char *page)                                                     \
 577 {                                                                       \
 578         struct iscsi_session *sess;                                     \
 579         struct se_session *se_sess;                                     \
 580         ssize_t rb;                                                     \
 581                                                                         \
 582         spin_lock_bh(&se_nacl->nacl_sess_lock);                         \
 583         se_sess = se_nacl->nacl_sess;                                   \
 584         if (!se_sess) {                                                 \
 585                 rb = snprintf(page, PAGE_SIZE,                          \
 586                         "No Active iSCSI Session\n");                   \
 587         } else {                                                        \
 588                 sess = se_sess->fabric_sess_ptr;                        \
 589                 rb = snprintf(page, PAGE_SIZE, "%u\n",                  \
 590                         (u32)sess->sess_ops->name);                     \
 591         }                                                               \
 592         spin_unlock_bh(&se_nacl->nacl_sess_lock);                       \
 593                                                                         \
 594         return rb;                                                      \
 595 }
 596
 597 #define NACL_PARAM_ATTR(_name) TF_NACL_PARAM_ATTR_RO(iscsi, _name);
 598
 599 DEF_NACL_PARAM(MaxConnections);
 600 NACL_PARAM_ATTR(MaxConnections);
 601
 602 DEF_NACL_PARAM(InitialR2T);
 603 NACL_PARAM_ATTR(InitialR2T);
 604
 605 DEF_NACL_PARAM(ImmediateData);
 606 NACL_PARAM_ATTR(ImmediateData);
 607
 608 DEF_NACL_PARAM(MaxBurstLength);
 609 NACL_PARAM_ATTR(MaxBurstLength);
 610
 611 DEF_NACL_PARAM(FirstBurstLength);
 612 NACL_PARAM_ATTR(FirstBurstLength);
 613
 614 DEF_NACL_PARAM(DefaultTime2Wait);
 615 NACL_PARAM_ATTR(DefaultTime2Wait);
 616
 617 DEF_NACL_PARAM(DefaultTime2Retain);
 618 NACL_PARAM_ATTR(DefaultTime2Retain);
 619
 620 DEF_NACL_PARAM(MaxOutstandingR2T);
 621 NACL_PARAM_ATTR(MaxOutstandingR2T);
 622
 623 DEF_NACL_PARAM(DataPDUInOrder);
 624 NACL_PARAM_ATTR(DataPDUInOrder);
 625
 626 DEF_NACL_PARAM(DataSequenceInOrder);
 627 NACL_PARAM_ATTR(DataSequenceInOrder);
 628
 629 DEF_NACL_PARAM(ErrorRecoveryLevel);
 630 NACL_PARAM_ATTR(ErrorRecoveryLevel);
 631
 632 static struct configfs_attribute *lio_target_nacl_param_attrs[] = {
 633         &iscsi_nacl_param_MaxConnections.attr,
 634         &iscsi_nacl_param_InitialR2T.attr,
 635         &iscsi_nacl_param_ImmediateData.attr,
 636         &iscsi_nacl_param_MaxBurstLength.attr,
 637         &iscsi_nacl_param_FirstBurstLength.attr,
 638         &iscsi_nacl_param_DefaultTime2Wait.attr,
 639         &iscsi_nacl_param_DefaultTime2Retain.attr,
 640         &iscsi_nacl_param_MaxOutstandingR2T.attr,
 641         &iscsi_nacl_param_DataPDUInOrder.attr,
 642         &iscsi_nacl_param_DataSequenceInOrder.attr,
 643         &iscsi_nacl_param_ErrorRecoveryLevel.attr,
 644         NULL,
 645 };
 646
 647 /* End items for lio_target_nacl_param_cit */
 648
 649 /* Start items for lio_target_acl_cit */
 650
 651 static ssize_t lio_target_nacl_show_info(
 652         struct se_node_acl *se_nacl,
 653         char *page)
 654 {
 655         struct iscsi_session *sess;
 656         struct iscsi_conn *conn;
 657         struct se_session *se_sess;
 658         ssize_t rb = 0;
 659
 660         spin_lock_bh(&se_nacl->nacl_sess_lock);
 661         se_sess = se_nacl->nacl_sess;
 662         if (!se_sess) {
 663                 rb += sprintf(page+rb, "No active iSCSI Session for Initiator"
 664                         " Endpoint: %s\n", se_nacl->initiatorname);
 665         } else {
 666                 sess = se_sess->fabric_sess_ptr;
 667
 668                 rb += sprintf(page+rb, "InitiatorName: %s\n",
 669                         sess->sess_ops->InitiatorName);
 670                 rb += sprintf(page+rb, "InitiatorAlias: %s\n",
 671                         sess->sess_ops->InitiatorAlias);
 672
 673                 rb += sprintf(page+rb,
 674                               "LIO Session ID: %u   ISID: 0x%6ph  TSIH: %hu  ",
 675                               sess->sid, sess->isid, sess->tsih);
 676                 rb += sprintf(page+rb, "SessionType: %s\n",
 677                                 (sess->sess_ops->SessionType) ?
 678                                 "Discovery" : "Normal");
 679                 rb += sprintf(page+rb, "Session State: ");
 680                 switch (sess->session_state) {
 681                 case TARG_SESS_STATE_FREE:
 682                         rb += sprintf(page+rb, "TARG_SESS_FREE\n");
 683                         break;
 684                 case TARG_SESS_STATE_ACTIVE:
 685                         rb += sprintf(page+rb, "TARG_SESS_STATE_ACTIVE\n");
 686                         break;
 687                 case TARG_SESS_STATE_LOGGED_IN:
 688                         rb += sprintf(page+rb, "TARG_SESS_STATE_LOGGED_IN\n");
 689                         break;
 690                 case TARG_SESS_STATE_FAILED:
 691                         rb += sprintf(page+rb, "TARG_SESS_STATE_FAILED\n");
 692                         break;
 693                 case TARG_SESS_STATE_IN_CONTINUE:
 694                         rb += sprintf(page+rb, "TARG_SESS_STATE_IN_CONTINUE\n");
 695                         break;
 696                 default:
 697                         rb += sprintf(page+rb, "ERROR: Unknown Session"
 698                                         " State!\n");
 699                         break;
 700                 }
 701
 702                 rb += sprintf(page+rb, "---------------------[iSCSI Session"
 703                                 " Values]-----------------------\n");
 704                 rb += sprintf(page+rb, "  CmdSN/WR  :  CmdSN/WC  :  ExpCmdSN"
 705                                 "  :  MaxCmdSN  :     ITT    :     TTT\n");
 706                 rb += sprintf(page+rb, " 0x%08x   0x%08x   0x%08x   0x%08x"
 707                                 "   0x%08x   0x%08x\n",
 708                         sess->cmdsn_window,
 709                         (sess->max_cmd_sn - sess->exp_cmd_sn) + 1,
 710                         sess->exp_cmd_sn, sess->max_cmd_sn,
 711                         sess->init_task_tag, sess->targ_xfer_tag);
 712                 rb += sprintf(page+rb, "----------------------[iSCSI"
 713                                 " Connections]-------------------------\n");
 714
 715                 spin_lock(&sess->conn_lock);
 716                 list_for_each_entry(conn, &sess->sess_conn_list, conn_list) {
 717                         rb += sprintf(page+rb, "CID: %hu  Connection"
 718                                         " State: ", conn->cid);
 719                         switch (conn->conn_state) {
 720                         case TARG_CONN_STATE_FREE:
 721                                 rb += sprintf(page+rb,
 722                                         "TARG_CONN_STATE_FREE\n");
 723                                 break;
 724                         case TARG_CONN_STATE_XPT_UP:
 725                                 rb += sprintf(page+rb,
 726                                         "TARG_CONN_STATE_XPT_UP\n");
 727                                 break;
 728                         case TARG_CONN_STATE_IN_LOGIN:
 729                                 rb += sprintf(page+rb,
 730                                         "TARG_CONN_STATE_IN_LOGIN\n");
 731                                 break;
 732                         case TARG_CONN_STATE_LOGGED_IN:
 733                                 rb += sprintf(page+rb,
 734                                         "TARG_CONN_STATE_LOGGED_IN\n");
 735                                 break;
 736                         case TARG_CONN_STATE_IN_LOGOUT:
 737                                 rb += sprintf(page+rb,
 738                                         "TARG_CONN_STATE_IN_LOGOUT\n");
 739                                 break;
 740                         case TARG_CONN_STATE_LOGOUT_REQUESTED:
 741                                 rb += sprintf(page+rb,
 742                                         "TARG_CONN_STATE_LOGOUT_REQUESTED\n");
 743                                 break;
 744                         case TARG_CONN_STATE_CLEANUP_WAIT:
 745                                 rb += sprintf(page+rb,
 746                                         "TARG_CONN_STATE_CLEANUP_WAIT\n");
 747                                 break;
 748                         default:
 749                                 rb += sprintf(page+rb,
 750                                         "ERROR: Unknown Connection State!\n");
 751                                 break;
 752                         }
 753
 754                         rb += sprintf(page+rb, "   Address %s %s", conn->login_ip,
 755                                 (conn->network_transport == ISCSI_TCP) ?
 756                                 "TCP" : "SCTP");
 757                         rb += sprintf(page+rb, "  StatSN: 0x%08x\n",
 758                                 conn->stat_sn);
 759                 }
 760                 spin_unlock(&sess->conn_lock);
 761         }
 762         spin_unlock_bh(&se_nacl->nacl_sess_lock);
 763
 764         return rb;
 765 }
 766
 767 TF_NACL_BASE_ATTR_RO(lio_target, info);
 768
 769 static ssize_t lio_target_nacl_show_cmdsn_depth(
 770         struct se_node_acl *se_nacl,
 771         char *page)
 772 {
 773         return sprintf(page, "%u\n", se_nacl->queue_depth);
 774 }
 775
 776 static ssize_t lio_target_nacl_store_cmdsn_depth(
 777         struct se_node_acl *se_nacl,
 778         const char *page,
 779         size_t count)
 780 {
 781         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 782         struct iscsi_portal_group *tpg = container_of(se_tpg,
 783                         struct iscsi_portal_group, tpg_se_tpg);
 784         struct config_item *acl_ci, *tpg_ci, *wwn_ci;
 785         u32 cmdsn_depth = 0;
 786         int ret;
 787
 788         ret = kstrtou32(page, 0, &cmdsn_depth);
 789         if (ret)
 790                 return ret;
 791         if (cmdsn_depth > TA_DEFAULT_CMDSN_DEPTH_MAX) {
 792                 pr_err("Passed cmdsn_depth: %u exceeds"
 793                         " TA_DEFAULT_CMDSN_DEPTH_MAX: %u\n", cmdsn_depth,
 794                         TA_DEFAULT_CMDSN_DEPTH_MAX);
 795                 return -EINVAL;
 796         }
 797         acl_ci = &se_nacl->acl_group.cg_item;
 798         if (!acl_ci) {
 799                 pr_err("Unable to locatel acl_ci\n");
 800                 return -EINVAL;
 801         }
 802         tpg_ci = &acl_ci->ci_parent->ci_group->cg_item;
 803         if (!tpg_ci) {
 804                 pr_err("Unable to locate tpg_ci\n");
 805                 return -EINVAL;
 806         }
 807         wwn_ci = &tpg_ci->ci_group->cg_item;
 808         if (!wwn_ci) {
 809                 pr_err("Unable to locate config_item wwn_ci\n");
 810                 return -EINVAL;
 811         }
 812
 813         if (iscsit_get_tpg(tpg) < 0)
 814                 return -EINVAL;
 815         /*
 816          * iscsit_tpg_set_initiator_node_queue_depth() assumes force=1
 817          */
 818         ret = iscsit_tpg_set_initiator_node_queue_depth(tpg,
 819                                 config_item_name(acl_ci), cmdsn_depth, 1);
 820
 821         pr_debug("LIO_Target_ConfigFS: %s/%s Set CmdSN Window: %u for"
 822                 "InitiatorName: %s\n", config_item_name(wwn_ci),
 823                 config_item_name(tpg_ci), cmdsn_depth,
 824                 config_item_name(acl_ci));
 825
 826         iscsit_put_tpg(tpg);
 827         return (!ret) ? count : (ssize_t)ret;
 828 }
 829
 830 TF_NACL_BASE_ATTR(lio_target, cmdsn_depth, S_IRUGO | S_IWUSR);
 831
 832 static ssize_t lio_target_nacl_show_tag(
 833         struct se_node_acl *se_nacl,
 834         char *page)
 835 {
 836         return snprintf(page, PAGE_SIZE, "%s", se_nacl->acl_tag);
 837 }
 838
 839 static ssize_t lio_target_nacl_store_tag(
 840         struct se_node_acl *se_nacl,
 841         const char *page,
 842         size_t count)
 843 {
 844         int ret;
 845
 846         ret = core_tpg_set_initiator_node_tag(se_nacl->se_tpg, se_nacl, page);
 847
 848         if (ret < 0)
 849                 return ret;
 850         return count;
 851 }
 852
 853 TF_NACL_BASE_ATTR(lio_target, tag, S_IRUGO | S_IWUSR);
 854
 855 static struct configfs_attribute *lio_target_initiator_attrs[] = {
 856         &lio_target_nacl_info.attr,
 857         &lio_target_nacl_cmdsn_depth.attr,
 858         &lio_target_nacl_tag.attr,
 859         NULL,
 860 };
 861
 862 static int lio_target_init_nodeacl(struct se_node_acl *se_nacl,
 863                 const char *name)
 864 {
 865         struct iscsi_node_acl *acl =
 866                 container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 867         struct config_group *stats_cg = &se_nacl->acl_fabric_stat_group;
 868
 869         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 870                                 GFP_KERNEL);
 871         if (!stats_cg->default_groups) {
 872                 pr_err("Unable to allocate memory for"
 873                                 " stats_cg->default_groups\n");
 874                 return -ENOMEM;
 875         }
 876
 877         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 878         stats_cg->default_groups[1] = NULL;
 879         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 880                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 881
 882         return 0;
 883 }
 884
 885 static void lio_target_cleanup_nodeacl( struct se_node_acl *se_nacl)
 886 {
 887         struct iscsi_node_acl *acl = container_of(se_nacl,
 888                         struct iscsi_node_acl, se_node_acl);
 889         struct config_item *df_item;
 890         struct config_group *stats_cg;
 891         int i;
 892
 893         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 894         for (i = 0; stats_cg->default_groups[i]; i++) {
 895                 df_item = &stats_cg->default_groups[i]->cg_item;
 896                 stats_cg->default_groups[i] = NULL;
 897                 config_item_put(df_item);
 898         }
 899         kfree(stats_cg->default_groups);
 900 }
 901
 902 /* End items for lio_target_acl_cit */
 903
 904 /* Start items for lio_target_tpg_attrib_cit */
 905
 906 #define DEF_TPG_ATTRIB(name)                                            \
 907                                                                         \
 908 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 909         struct se_portal_group *se_tpg,                         \
 910         char *page)                                                     \
 911 {                                                                       \
 912         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 913                         struct iscsi_portal_group, tpg_se_tpg); \
 914         ssize_t rb;                                                     \
 915                                                                         \
 916         if (iscsit_get_tpg(tpg) < 0)                                    \
 917                 return -EINVAL;                                         \
 918                                                                         \
 919         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 920         iscsit_put_tpg(tpg);                                            \
 921         return rb;                                                      \
 922 }                                                                       \
 923                                                                         \
 924 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 925         struct se_portal_group *se_tpg,                         \
 926         const char *page,                                               \
 927         size_t count)                                                   \
 928 {                                                                       \
 929         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 930                         struct iscsi_portal_group, tpg_se_tpg); \
 931         u32 val;                                                        \
 932         int ret;                                                        \
 933                                                                         \
 934         if (iscsit_get_tpg(tpg) < 0)                                    \
 935                 return -EINVAL;                                         \
 936                                                                         \
 937         ret = kstrtou32(page, 0, &val);                                 \
 938         if (ret)                                                        \
 939                 goto out;                                               \
 940         ret = iscsit_ta_##name(tpg, val);                               \
 941         if (ret < 0)                                                    \
 942                 goto out;                                               \
 943                                                                         \
 944         iscsit_put_tpg(tpg);                                            \
 945         return count;                                                   \
 946 out:                                                                    \
 947         iscsit_put_tpg(tpg);                                            \
 948         return ret;                                                     \
 949 }
 950
 951 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 952
 953 /*
 954  * Define iscsi_tpg_attrib_s_authentication
 955  */
 956 DEF_TPG_ATTRIB(authentication);
 957 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
 958 /*
 959  * Define iscsi_tpg_attrib_s_login_timeout
 960  */
 961 DEF_TPG_ATTRIB(login_timeout);
 962 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
 963 /*
 964  * Define iscsi_tpg_attrib_s_netif_timeout
 965  */
 966 DEF_TPG_ATTRIB(netif_timeout);
 967 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
 968 /*
 969  * Define iscsi_tpg_attrib_s_generate_node_acls
 970  */
 971 DEF_TPG_ATTRIB(generate_node_acls);
 972 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
 973 /*
 974  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
 975  */
 976 DEF_TPG_ATTRIB(default_cmdsn_depth);
 977 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
 978 /*
 979  Define iscsi_tpg_attrib_s_cache_dynamic_acls
 980  */
 981 DEF_TPG_ATTRIB(cache_dynamic_acls);
 982 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
 983 /*
 984  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
 985  */
 986 DEF_TPG_ATTRIB(demo_mode_write_protect);
 987 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
 988 /*
 989  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
 990  */
 991 DEF_TPG_ATTRIB(prod_mode_write_protect);
 992 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
 993 /*
 994  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
 995  */
 996 DEF_TPG_ATTRIB(demo_mode_discovery);
 997 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
 998 /*
 999  * Define iscsi_tpg_attrib_s_default_erl
1000  */
1001 DEF_TPG_ATTRIB(default_erl);
1002 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1003 /*
1004  * Define iscsi_tpg_attrib_s_t10_pi
1005  */
1006 DEF_TPG_ATTRIB(t10_pi);
1007 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1008 /*
1009  * Define iscsi_tpg_attrib_s_fabric_prot_type
1010  */
1011 DEF_TPG_ATTRIB(fabric_prot_type);
1012 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR);
1013
1014 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1015         &iscsi_tpg_attrib_authentication.attr,
1016         &iscsi_tpg_attrib_login_timeout.attr,
1017         &iscsi_tpg_attrib_netif_timeout.attr,
1018         &iscsi_tpg_attrib_generate_node_acls.attr,
1019         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1020         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1021         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1022         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1023         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1024         &iscsi_tpg_attrib_default_erl.attr,
1025         &iscsi_tpg_attrib_t10_pi.attr,
1026         &iscsi_tpg_attrib_fabric_prot_type.attr,
1027         NULL,
1028 };
1029
1030 /* End items for lio_target_tpg_attrib_cit */
1031
1032 /* Start items for lio_target_tpg_auth_cit */
1033
1034 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1035 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1036         struct se_portal_group *se_tpg,                                         \
1037         char *page)                                                             \
1038 {                                                                               \
1039         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1040                                 struct iscsi_portal_group, tpg_se_tpg);         \
1041         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1042                                                                                 \
1043         if (!capable(CAP_SYS_ADMIN))                                            \
1044                 return -EPERM;                                                  \
1045                                                                                 \
1046         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1047 }                                                                               \
1048                                                                                 \
1049 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1050         struct se_portal_group *se_tpg,                                         \
1051         const char *page,                                                       \
1052         size_t count)                                                           \
1053 {                                                                               \
1054         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1055                                 struct iscsi_portal_group, tpg_se_tpg);         \
1056         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1057                                                                                 \
1058         if (!capable(CAP_SYS_ADMIN))                                            \
1059                 return -EPERM;                                                  \
1060                                                                                 \
1061         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1062         if (!(strncmp("NULL", auth->name, 4)))                                  \
1063                 auth->naf_flags &= ~flags;                                      \
1064         else                                                                    \
1065                 auth->naf_flags |= flags;                                       \
1066                                                                                 \
1067         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1068             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1069                 auth->authenticate_target = 1;                                  \
1070         else                                                                    \
1071                 auth->authenticate_target = 0;                                  \
1072                                                                                 \
1073         return count;                                                           \
1074 }
1075
1076 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1077 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1078         struct se_portal_group *se_tpg,                                         \
1079         char *page)                                                             \
1080 {                                                                               \
1081         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1082                                 struct iscsi_portal_group, tpg_se_tpg);         \
1083         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1084                                                                                 \
1085         if (!capable(CAP_SYS_ADMIN))                                            \
1086                 return -EPERM;                                                  \
1087                                                                                 \
1088         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1089 }
1090
1091 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1092         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1093 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1094         struct se_portal_group *se_tpg,                                         \
1095         char *page)                                                             \
1096 {                                                                               \
1097         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1098 }                                                                               \
1099                                                                                 \
1100 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1101         struct se_portal_group *se_tpg,                                         \
1102         const char *page,                                                       \
1103         size_t count)                                                           \
1104 {                                                                               \
1105         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1106 }
1107
1108 #define DEF_TPG_AUTH_INT(name)                                                  \
1109         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1110 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1111         struct se_portal_group *se_tpg,                                         \
1112         char *page)                                                             \
1113 {                                                                               \
1114         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1115 }
1116
1117 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1118 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1119
1120 /*
1121  *  * One-way authentication userid
1122  *   */
1123 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1124 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1125 /*
1126  *  * One-way authentication password
1127  *   */
1128 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1129 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1130 /*
1131  *  * Enforce mutual authentication
1132  *   */
1133 DEF_TPG_AUTH_INT(authenticate_target);
1134 TPG_AUTH_ATTR_RO(authenticate_target);
1135 /*
1136  *  * Mutual authentication userid
1137  *   */
1138 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1139 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1140 /*
1141  *  * Mutual authentication password
1142  *   */
1143 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1144 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1145
1146 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1147         &iscsi_tpg_auth_userid.attr,
1148         &iscsi_tpg_auth_password.attr,
1149         &iscsi_tpg_auth_authenticate_target.attr,
1150         &iscsi_tpg_auth_userid_mutual.attr,
1151         &iscsi_tpg_auth_password_mutual.attr,
1152         NULL,
1153 };
1154
1155 /* End items for lio_target_tpg_auth_cit */
1156
1157 /* Start items for lio_target_tpg_param_cit */
1158
1159 #define DEF_TPG_PARAM(name)                                             \
1160 static ssize_t iscsi_tpg_param_show_##name(                             \
1161         struct se_portal_group *se_tpg,                                 \
1162         char *page)                                                     \
1163 {                                                                       \
1164         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1165                         struct iscsi_portal_group, tpg_se_tpg);         \
1166         struct iscsi_param *param;                                      \
1167         ssize_t rb;                                                     \
1168                                                                         \
1169         if (iscsit_get_tpg(tpg) < 0)                                    \
1170                 return -EINVAL;                                         \
1171                                                                         \
1172         param = iscsi_find_param_from_key(__stringify(name),            \
1173                                 tpg->param_list);                       \
1174         if (!param) {                                                   \
1175                 iscsit_put_tpg(tpg);                                    \
1176                 return -EINVAL;                                         \
1177         }                                                               \
1178         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1179                                                                         \
1180         iscsit_put_tpg(tpg);                                            \
1181         return rb;                                                      \
1182 }                                                                       \
1183 static ssize_t iscsi_tpg_param_store_##name(                            \
1184         struct se_portal_group *se_tpg,                         \
1185         const char *page,                                               \
1186         size_t count)                                                   \
1187 {                                                                       \
1188         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1189                         struct iscsi_portal_group, tpg_se_tpg);         \
1190         char *buf;                                                      \
1191         int ret, len;                                                   \
1192                                                                         \
1193         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1194         if (!buf)                                                       \
1195                 return -ENOMEM;                                         \
1196         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1197         if (isspace(buf[len-1]))                                        \
1198                 buf[len-1] = '\0'; /* Kill newline */                   \
1199                                                                         \
1200         if (iscsit_get_tpg(tpg) < 0) {                                  \
1201                 kfree(buf);                                             \
1202                 return -EINVAL;                                         \
1203         }                                                               \
1204                                                                         \
1205         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1206         if (ret < 0)                                                    \
1207                 goto out;                                               \
1208                                                                         \
1209         kfree(buf);                                                     \
1210         iscsit_put_tpg(tpg);                                            \
1211         return count;                                                   \
1212 out:                                                                    \
1213         kfree(buf);                                                     \
1214         iscsit_put_tpg(tpg);                                            \
1215         return -EINVAL;                                         \
1216 }
1217
1218 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1219
1220 DEF_TPG_PARAM(AuthMethod);
1221 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1222
1223 DEF_TPG_PARAM(HeaderDigest);
1224 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1225
1226 DEF_TPG_PARAM(DataDigest);
1227 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1228
1229 DEF_TPG_PARAM(MaxConnections);
1230 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1231
1232 DEF_TPG_PARAM(TargetAlias);
1233 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1234
1235 DEF_TPG_PARAM(InitialR2T);
1236 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1237
1238 DEF_TPG_PARAM(ImmediateData);
1239 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1240
1241 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1242 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1243
1244 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1245 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1246
1247 DEF_TPG_PARAM(MaxBurstLength);
1248 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1249
1250 DEF_TPG_PARAM(FirstBurstLength);
1251 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1252
1253 DEF_TPG_PARAM(DefaultTime2Wait);
1254 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1255
1256 DEF_TPG_PARAM(DefaultTime2Retain);
1257 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1258
1259 DEF_TPG_PARAM(MaxOutstandingR2T);
1260 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1261
1262 DEF_TPG_PARAM(DataPDUInOrder);
1263 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1264
1265 DEF_TPG_PARAM(DataSequenceInOrder);
1266 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1267
1268 DEF_TPG_PARAM(ErrorRecoveryLevel);
1269 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1270
1271 DEF_TPG_PARAM(IFMarker);
1272 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1273
1274 DEF_TPG_PARAM(OFMarker);
1275 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1276
1277 DEF_TPG_PARAM(IFMarkInt);
1278 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1279
1280 DEF_TPG_PARAM(OFMarkInt);
1281 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1282
1283 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1284         &iscsi_tpg_param_AuthMethod.attr,
1285         &iscsi_tpg_param_HeaderDigest.attr,
1286         &iscsi_tpg_param_DataDigest.attr,
1287         &iscsi_tpg_param_MaxConnections.attr,
1288         &iscsi_tpg_param_TargetAlias.attr,
1289         &iscsi_tpg_param_InitialR2T.attr,
1290         &iscsi_tpg_param_ImmediateData.attr,
1291         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1292         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1293         &iscsi_tpg_param_MaxBurstLength.attr,
1294         &iscsi_tpg_param_FirstBurstLength.attr,
1295         &iscsi_tpg_param_DefaultTime2Wait.attr,
1296         &iscsi_tpg_param_DefaultTime2Retain.attr,
1297         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1298         &iscsi_tpg_param_DataPDUInOrder.attr,
1299         &iscsi_tpg_param_DataSequenceInOrder.attr,
1300         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1301         &iscsi_tpg_param_IFMarker.attr,
1302         &iscsi_tpg_param_OFMarker.attr,
1303         &iscsi_tpg_param_IFMarkInt.attr,
1304         &iscsi_tpg_param_OFMarkInt.attr,
1305         NULL,
1306 };
1307
1308 /* End items for lio_target_tpg_param_cit */
1309
1310 /* Start items for lio_target_tpg_cit */
1311
1312 static ssize_t lio_target_tpg_show_enable(
1313         struct se_portal_group *se_tpg,
1314         char *page)
1315 {
1316         struct iscsi_portal_group *tpg = container_of(se_tpg,
1317                         struct iscsi_portal_group, tpg_se_tpg);
1318         ssize_t len;
1319
1320         spin_lock(&tpg->tpg_state_lock);
1321         len = sprintf(page, "%d\n",
1322                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1323         spin_unlock(&tpg->tpg_state_lock);
1324
1325         return len;
1326 }
1327
1328 static ssize_t lio_target_tpg_store_enable(
1329         struct se_portal_group *se_tpg,
1330         const char *page,
1331         size_t count)
1332 {
1333         struct iscsi_portal_group *tpg = container_of(se_tpg,
1334                         struct iscsi_portal_group, tpg_se_tpg);
1335         u32 op;
1336         int ret;
1337
1338         ret = kstrtou32(page, 0, &op);
1339         if (ret)
1340                 return ret;
1341         if ((op != 1) && (op != 0)) {
1342                 pr_err("Illegal value for tpg_enable: %u\n", op);
1343                 return -EINVAL;
1344         }
1345
1346         ret = iscsit_get_tpg(tpg);
1347         if (ret < 0)
1348                 return -EINVAL;
1349
1350         if (op) {
1351                 ret = iscsit_tpg_enable_portal_group(tpg);
1352                 if (ret < 0)
1353                         goto out;
1354         } else {
1355                 /*
1356                  * iscsit_tpg_disable_portal_group() assumes force=1
1357                  */
1358                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1359                 if (ret < 0)
1360                         goto out;
1361         }
1362
1363         iscsit_put_tpg(tpg);
1364         return count;
1365 out:
1366         iscsit_put_tpg(tpg);
1367         return -EINVAL;
1368 }
1369
1370 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1371
1372 static ssize_t lio_target_tpg_show_dynamic_sessions(
1373         struct se_portal_group *se_tpg,
1374         char *page)
1375 {
1376         return target_show_dynamic_sessions(se_tpg, page);
1377 }
1378
1379 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
1380
1381 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1382         &lio_target_tpg_enable.attr,
1383         &lio_target_tpg_dynamic_sessions.attr,
1384         NULL,
1385 };
1386
1387 /* End items for lio_target_tpg_cit */
1388
1389 /* Start items for lio_target_tiqn_cit */
1390
1391 static struct se_portal_group *lio_target_tiqn_addtpg(
1392         struct se_wwn *wwn,
1393         struct config_group *group,
1394         const char *name)
1395 {
1396         struct iscsi_portal_group *tpg;
1397         struct iscsi_tiqn *tiqn;
1398         char *tpgt_str;
1399         int ret;
1400         u16 tpgt;
1401
1402         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1403         /*
1404          * Only tpgt_# directory groups can be created below
1405          * target/iscsi/iqn.superturodiskarry/
1406          */
1407         tpgt_str = strstr(name, "tpgt_");
1408         if (!tpgt_str) {
1409                 pr_err("Unable to locate \"tpgt_#\" directory"
1410                                 " group\n");
1411                 return NULL;
1412         }
1413         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1414         ret = kstrtou16(tpgt_str, 0, &tpgt);
1415         if (ret)
1416                 return NULL;
1417
1418         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1419         if (!tpg)
1420                 return NULL;
1421
1422         ret = core_tpg_register(wwn, &tpg->tpg_se_tpg, SCSI_PROTOCOL_ISCSI);
1423         if (ret < 0)
1424                 return NULL;
1425
1426         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1427         if (ret != 0)
1428                 goto out;
1429
1430         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1431         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1432                         name);
1433         return &tpg->tpg_se_tpg;
1434 out:
1435         core_tpg_deregister(&tpg->tpg_se_tpg);
1436         kfree(tpg);
1437         return NULL;
1438 }
1439
1440 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1441 {
1442         struct iscsi_portal_group *tpg;
1443         struct iscsi_tiqn *tiqn;
1444
1445         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1446         tiqn = tpg->tpg_tiqn;
1447         /*
1448          * iscsit_tpg_del_portal_group() assumes force=1
1449          */
1450         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1451         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1452 }
1453
1454 /* End items for lio_target_tiqn_cit */
1455
1456 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1457
1458 static ssize_t lio_target_wwn_show_attr_lio_version(
1459         struct target_fabric_configfs *tf,
1460         char *page)
1461 {
1462         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1463 }
1464
1465 TF_WWN_ATTR_RO(lio_target, lio_version);
1466
1467 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1468         &lio_target_wwn_lio_version.attr,
1469         NULL,
1470 };
1471
1472 static struct se_wwn *lio_target_call_coreaddtiqn(
1473         struct target_fabric_configfs *tf,
1474         struct config_group *group,
1475         const char *name)
1476 {
1477         struct config_group *stats_cg;
1478         struct iscsi_tiqn *tiqn;
1479
1480         tiqn = iscsit_add_tiqn((unsigned char *)name);
1481         if (IS_ERR(tiqn))
1482                 return ERR_CAST(tiqn);
1483         /*
1484          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1485          */
1486         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1487
1488         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1489                                 GFP_KERNEL);
1490         if (!stats_cg->default_groups) {
1491                 pr_err("Unable to allocate memory for"
1492                                 " stats_cg->default_groups\n");
1493                 iscsit_del_tiqn(tiqn);
1494                 return ERR_PTR(-ENOMEM);
1495         }
1496
1497         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1498         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1499         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1500         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1501         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1502         stats_cg->default_groups[5] = NULL;
1503         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1504                         "iscsi_instance", &iscsi_stat_instance_cit);
1505         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1506                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1507         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1508                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1509         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1510                         "iscsi_login_stats", &iscsi_stat_login_cit);
1511         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1512                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1513
1514         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1515         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1516                         " %s\n", name);
1517         return &tiqn->tiqn_wwn;
1518 }
1519
1520 static void lio_target_call_coredeltiqn(
1521         struct se_wwn *wwn)
1522 {
1523         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1524         struct config_item *df_item;
1525         struct config_group *stats_cg;
1526         int i;
1527
1528         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1529         for (i = 0; stats_cg->default_groups[i]; i++) {
1530                 df_item = &stats_cg->default_groups[i]->cg_item;
1531                 stats_cg->default_groups[i] = NULL;
1532                 config_item_put(df_item);
1533         }
1534         kfree(stats_cg->default_groups);
1535
1536         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1537                         tiqn->tiqn);
1538         iscsit_del_tiqn(tiqn);
1539 }
1540
1541 /* End LIO-Target TIQN struct contig_lio_target_cit */
1542
1543 /* Start lio_target_discovery_auth_cit */
1544
1545 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1546         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1547 static ssize_t iscsi_disc_show_##name(                                  \
1548         struct target_fabric_configfs *tf,                              \
1549         char *page)                                                     \
1550 {                                                                       \
1551         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1552                 page);                                                  \
1553 }                                                                       \
1554 static ssize_t iscsi_disc_store_##name(                                 \
1555         struct target_fabric_configfs *tf,                              \
1556         const char *page,                                               \
1557         size_t count)                                                   \
1558 {                                                                       \
1559         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1560                 page, count);                                           \
1561 }
1562
1563 #define DEF_DISC_AUTH_INT(name)                                         \
1564         __DEF_NACL_AUTH_INT(disc, name)                                 \
1565 static ssize_t iscsi_disc_show_##name(                                  \
1566         struct target_fabric_configfs *tf,                              \
1567         char *page)                                                     \
1568 {                                                                       \
1569         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1570                         page);                                          \
1571 }
1572
1573 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1574 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1575
1576 /*
1577  * One-way authentication userid
1578  */
1579 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1580 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1581 /*
1582  * One-way authentication password
1583  */
1584 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1585 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1586 /*
1587  * Enforce mutual authentication
1588  */
1589 DEF_DISC_AUTH_INT(authenticate_target);
1590 DISC_AUTH_ATTR_RO(authenticate_target);
1591 /*
1592  * Mutual authentication userid
1593  */
1594 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1595 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1596 /*
1597  * Mutual authentication password
1598  */
1599 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1600 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1601
1602 /*
1603  * enforce_discovery_auth
1604  */
1605 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1606         struct target_fabric_configfs *tf,
1607         char *page)
1608 {
1609         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1610
1611         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1612 }
1613
1614 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1615         struct target_fabric_configfs *tf,
1616         const char *page,
1617         size_t count)
1618 {
1619         struct iscsi_param *param;
1620         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1621         u32 op;
1622         int err;
1623
1624         err = kstrtou32(page, 0, &op);
1625         if (err)
1626                 return -EINVAL;
1627         if ((op != 1) && (op != 0)) {
1628                 pr_err("Illegal value for enforce_discovery_auth:"
1629                                 " %u\n", op);
1630                 return -EINVAL;
1631         }
1632
1633         if (!discovery_tpg) {
1634                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1635                 return -EINVAL;
1636         }
1637
1638         param = iscsi_find_param_from_key(AUTHMETHOD,
1639                                 discovery_tpg->param_list);
1640         if (!param)
1641                 return -EINVAL;
1642
1643         if (op) {
1644                 /*
1645                  * Reset the AuthMethod key to CHAP.
1646                  */
1647                 if (iscsi_update_param_value(param, CHAP) < 0)
1648                         return -EINVAL;
1649
1650                 discovery_tpg->tpg_attrib.authentication = 1;
1651                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1652                 pr_debug("LIO-CORE[0] Successfully enabled"
1653                         " authentication enforcement for iSCSI"
1654                         " Discovery TPG\n");
1655         } else {
1656                 /*
1657                  * Reset the AuthMethod key to CHAP,None
1658                  */
1659                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1660                         return -EINVAL;
1661
1662                 discovery_tpg->tpg_attrib.authentication = 0;
1663                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1664                 pr_debug("LIO-CORE[0] Successfully disabled"
1665                         " authentication enforcement for iSCSI"
1666                         " Discovery TPG\n");
1667         }
1668
1669         return count;
1670 }
1671
1672 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1673
1674 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1675         &iscsi_disc_userid.attr,
1676         &iscsi_disc_password.attr,
1677         &iscsi_disc_authenticate_target.attr,
1678         &iscsi_disc_userid_mutual.attr,
1679         &iscsi_disc_password_mutual.attr,
1680         &iscsi_disc_enforce_discovery_auth.attr,
1681         NULL,
1682 };
1683
1684 /* End lio_target_discovery_auth_cit */
1685
1686 /* Start functions for target_core_fabric_ops */
1687
1688 static char *iscsi_get_fabric_name(void)
1689 {
1690         return "iSCSI";
1691 }
1692
1693 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1694 {
1695         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1696
1697         return cmd->i_state;
1698 }
1699
1700 static u32 lio_sess_get_index(struct se_session *se_sess)
1701 {
1702         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1703
1704         return sess->session_index;
1705 }
1706
1707 static u32 lio_sess_get_initiator_sid(
1708         struct se_session *se_sess,
1709         unsigned char *buf,
1710         u32 size)
1711 {
1712         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1713         /*
1714          * iSCSI Initiator Session Identifier from RFC-3720.
1715          */
1716         return snprintf(buf, size, "%6phN", sess->isid);
1717 }
1718
1719 static int lio_queue_data_in(struct se_cmd *se_cmd)
1720 {
1721         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1722
1723         cmd->i_state = ISTATE_SEND_DATAIN;
1724         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1725
1726         return 0;
1727 }
1728
1729 static int lio_write_pending(struct se_cmd *se_cmd)
1730 {
1731         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1732         struct iscsi_conn *conn = cmd->conn;
1733
1734         if (!cmd->immediate_data && !cmd->unsolicited_data)
1735                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1736
1737         return 0;
1738 }
1739
1740 static int lio_write_pending_status(struct se_cmd *se_cmd)
1741 {
1742         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1743         int ret;
1744
1745         spin_lock_bh(&cmd->istate_lock);
1746         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1747         spin_unlock_bh(&cmd->istate_lock);
1748
1749         return ret;
1750 }
1751
1752 static int lio_queue_status(struct se_cmd *se_cmd)
1753 {
1754         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1755
1756         cmd->i_state = ISTATE_SEND_STATUS;
1757
1758         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1759                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1760                 return 0;
1761         }
1762         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1763
1764         return 0;
1765 }
1766
1767 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1768 {
1769         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1770
1771         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1772         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1773 }
1774
1775 static void lio_aborted_task(struct se_cmd *se_cmd)
1776 {
1777         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1778
1779         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1780 }
1781
1782 static inline struct iscsi_portal_group *iscsi_tpg(struct se_portal_group *se_tpg)
1783 {
1784         return container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1785 }
1786
1787 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1788 {
1789         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn;
1790 }
1791
1792 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1793 {
1794         return iscsi_tpg(se_tpg)->tpgt;
1795 }
1796
1797 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1798 {
1799         return iscsi_tpg(se_tpg)->tpg_attrib.default_cmdsn_depth;
1800 }
1801
1802 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1803 {
1804         return iscsi_tpg(se_tpg)->tpg_attrib.generate_node_acls;
1805 }
1806
1807 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1808 {
1809         return iscsi_tpg(se_tpg)->tpg_attrib.cache_dynamic_acls;
1810 }
1811
1812 static int lio_tpg_check_demo_mode_write_protect(
1813         struct se_portal_group *se_tpg)
1814 {
1815         return iscsi_tpg(se_tpg)->tpg_attrib.demo_mode_write_protect;
1816 }
1817
1818 static int lio_tpg_check_prod_mode_write_protect(
1819         struct se_portal_group *se_tpg)
1820 {
1821         return iscsi_tpg(se_tpg)->tpg_attrib.prod_mode_write_protect;
1822 }
1823
1824 static int lio_tpg_check_prot_fabric_only(
1825         struct se_portal_group *se_tpg)
1826 {
1827         /*
1828          * Only report fabric_prot_type if t10_pi has also been enabled
1829          * for incoming ib_isert sessions.
1830          */
1831         if (!iscsi_tpg(se_tpg)->tpg_attrib.t10_pi)
1832                 return 0;
1833         return iscsi_tpg(se_tpg)->tpg_attrib.fabric_prot_type;
1834 }
1835
1836 /*
1837  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1838  *
1839  * Also, this function calls iscsit_inc_session_usage_count() on the
1840  * struct iscsi_session in question.
1841  */
1842 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1843 {
1844         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1845
1846         spin_lock(&sess->conn_lock);
1847         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1848             atomic_read(&sess->session_logout) ||
1849             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1850                 spin_unlock(&sess->conn_lock);
1851                 return 0;
1852         }
1853         atomic_set(&sess->session_reinstatement, 1);
1854         spin_unlock(&sess->conn_lock);
1855
1856         iscsit_stop_time2retain_timer(sess);
1857         iscsit_stop_session(sess, 1, 1);
1858
1859         return 1;
1860 }
1861
1862 /*
1863  * Calls iscsit_dec_session_usage_count() as inverse of
1864  * lio_tpg_shutdown_session()
1865  */
1866 static void lio_tpg_close_session(struct se_session *se_sess)
1867 {
1868         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1869         /*
1870          * If the iSCSI Session for the iSCSI Initiator Node exists,
1871          * forcefully shutdown the iSCSI NEXUS.
1872          */
1873         iscsit_close_session(sess);
1874 }
1875
1876 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1877 {
1878         return iscsi_tpg(se_tpg)->tpg_tiqn->tiqn_index;
1879 }
1880
1881 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1882 {
1883         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1884                                 se_node_acl);
1885         struct se_portal_group *se_tpg = se_acl->se_tpg;
1886         struct iscsi_portal_group *tpg = container_of(se_tpg,
1887                                 struct iscsi_portal_group, tpg_se_tpg);
1888
1889         acl->node_attrib.nacl = acl;
1890         iscsit_set_default_node_attribues(acl, tpg);
1891 }
1892
1893 static int lio_check_stop_free(struct se_cmd *se_cmd)
1894 {
1895         return target_put_sess_cmd(se_cmd);
1896 }
1897
1898 static void lio_release_cmd(struct se_cmd *se_cmd)
1899 {
1900         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1901
1902         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1903         iscsit_release_cmd(cmd);
1904 }
1905
1906 const struct target_core_fabric_ops iscsi_ops = {
1907         .module                         = THIS_MODULE,
1908         .name                           = "iscsi",
1909         .node_acl_size                  = sizeof(struct iscsi_node_acl),
1910         .get_fabric_name                = iscsi_get_fabric_name,
1911         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1912         .tpg_get_tag                    = lio_tpg_get_tag,
1913         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1914         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1915         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1916         .tpg_check_demo_mode_write_protect =
1917                         lio_tpg_check_demo_mode_write_protect,
1918         .tpg_check_prod_mode_write_protect =
1919                         lio_tpg_check_prod_mode_write_protect,
1920         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1921         .tpg_get_inst_index             = lio_tpg_get_inst_index,
1922         .check_stop_free                = lio_check_stop_free,
1923         .release_cmd                    = lio_release_cmd,
1924         .shutdown_session               = lio_tpg_shutdown_session,
1925         .close_session                  = lio_tpg_close_session,
1926         .sess_get_index                 = lio_sess_get_index,
1927         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
1928         .write_pending                  = lio_write_pending,
1929         .write_pending_status           = lio_write_pending_status,
1930         .set_default_node_attributes    = lio_set_default_node_attributes,
1931         .get_cmd_state                  = iscsi_get_cmd_state,
1932         .queue_data_in                  = lio_queue_data_in,
1933         .queue_status                   = lio_queue_status,
1934         .queue_tm_rsp                   = lio_queue_tm_rsp,
1935         .aborted_task                   = lio_aborted_task,
1936         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
1937         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
1938         .fabric_make_tpg                = lio_target_tiqn_addtpg,
1939         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
1940         .fabric_make_np                 = lio_target_call_addnptotpg,
1941         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
1942         .fabric_init_nodeacl            = lio_target_init_nodeacl,
1943         .fabric_cleanup_nodeacl         = lio_target_cleanup_nodeacl,
1944
1945         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
1946         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
1947         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
1948         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
1949         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
1950         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
1951         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
1952         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
1953         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
1954         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
1955         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
1956 };