kernel/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 struct se_node_acl *lio_tpg_alloc_fabric_acl(
 864         struct se_portal_group *se_tpg)
 865 {
 866         struct iscsi_node_acl *acl;
 867
 868         acl = kzalloc(sizeof(struct iscsi_node_acl), GFP_KERNEL);
 869         if (!acl) {
 870                 pr_err("Unable to allocate memory for struct iscsi_node_acl\n");
 871                 return NULL;
 872         }
 873
 874         return &acl->se_node_acl;
 875 }
 876
 877 static struct se_node_acl *lio_target_make_nodeacl(
 878         struct se_portal_group *se_tpg,
 879         struct config_group *group,
 880         const char *name)
 881 {
 882         struct config_group *stats_cg;
 883         struct iscsi_node_acl *acl;
 884         struct se_node_acl *se_nacl_new, *se_nacl;
 885         struct iscsi_portal_group *tpg = container_of(se_tpg,
 886                         struct iscsi_portal_group, tpg_se_tpg);
 887         u32 cmdsn_depth;
 888
 889         se_nacl_new = lio_tpg_alloc_fabric_acl(se_tpg);
 890         if (!se_nacl_new)
 891                 return ERR_PTR(-ENOMEM);
 892
 893         cmdsn_depth = tpg->tpg_attrib.default_cmdsn_depth;
 894         /*
 895          * se_nacl_new may be released by core_tpg_add_initiator_node_acl()
 896          * when converting a NdoeACL from demo mode -> explict
 897          */
 898         se_nacl = core_tpg_add_initiator_node_acl(se_tpg, se_nacl_new,
 899                                 name, cmdsn_depth);
 900         if (IS_ERR(se_nacl))
 901                 return se_nacl;
 902
 903         acl = container_of(se_nacl, struct iscsi_node_acl, se_node_acl);
 904         stats_cg = &se_nacl->acl_fabric_stat_group;
 905
 906         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 2,
 907                                 GFP_KERNEL);
 908         if (!stats_cg->default_groups) {
 909                 pr_err("Unable to allocate memory for"
 910                                 " stats_cg->default_groups\n");
 911                 core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 912                 kfree(acl);
 913                 return ERR_PTR(-ENOMEM);
 914         }
 915
 916         stats_cg->default_groups[0] = &acl->node_stat_grps.iscsi_sess_stats_group;
 917         stats_cg->default_groups[1] = NULL;
 918         config_group_init_type_name(&acl->node_stat_grps.iscsi_sess_stats_group,
 919                         "iscsi_sess_stats", &iscsi_stat_sess_cit);
 920
 921         return se_nacl;
 922 }
 923
 924 static void lio_target_drop_nodeacl(
 925         struct se_node_acl *se_nacl)
 926 {
 927         struct se_portal_group *se_tpg = se_nacl->se_tpg;
 928         struct iscsi_node_acl *acl = container_of(se_nacl,
 929                         struct iscsi_node_acl, se_node_acl);
 930         struct config_item *df_item;
 931         struct config_group *stats_cg;
 932         int i;
 933
 934         stats_cg = &acl->se_node_acl.acl_fabric_stat_group;
 935         for (i = 0; stats_cg->default_groups[i]; i++) {
 936                 df_item = &stats_cg->default_groups[i]->cg_item;
 937                 stats_cg->default_groups[i] = NULL;
 938                 config_item_put(df_item);
 939         }
 940         kfree(stats_cg->default_groups);
 941
 942         core_tpg_del_initiator_node_acl(se_tpg, se_nacl, 1);
 943         kfree(acl);
 944 }
 945
 946 /* End items for lio_target_acl_cit */
 947
 948 /* Start items for lio_target_tpg_attrib_cit */
 949
 950 #define DEF_TPG_ATTRIB(name)                                            \
 951                                                                         \
 952 static ssize_t iscsi_tpg_attrib_show_##name(                            \
 953         struct se_portal_group *se_tpg,                         \
 954         char *page)                                                     \
 955 {                                                                       \
 956         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 957                         struct iscsi_portal_group, tpg_se_tpg); \
 958         ssize_t rb;                                                     \
 959                                                                         \
 960         if (iscsit_get_tpg(tpg) < 0)                                    \
 961                 return -EINVAL;                                         \
 962                                                                         \
 963         rb = sprintf(page, "%u\n", tpg->tpg_attrib.name);               \
 964         iscsit_put_tpg(tpg);                                            \
 965         return rb;                                                      \
 966 }                                                                       \
 967                                                                         \
 968 static ssize_t iscsi_tpg_attrib_store_##name(                           \
 969         struct se_portal_group *se_tpg,                         \
 970         const char *page,                                               \
 971         size_t count)                                                   \
 972 {                                                                       \
 973         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
 974                         struct iscsi_portal_group, tpg_se_tpg); \
 975         u32 val;                                                        \
 976         int ret;                                                        \
 977                                                                         \
 978         if (iscsit_get_tpg(tpg) < 0)                                    \
 979                 return -EINVAL;                                         \
 980                                                                         \
 981         ret = kstrtou32(page, 0, &val);                                 \
 982         if (ret)                                                        \
 983                 goto out;                                               \
 984         ret = iscsit_ta_##name(tpg, val);                               \
 985         if (ret < 0)                                                    \
 986                 goto out;                                               \
 987                                                                         \
 988         iscsit_put_tpg(tpg);                                            \
 989         return count;                                                   \
 990 out:                                                                    \
 991         iscsit_put_tpg(tpg);                                            \
 992         return ret;                                                     \
 993 }
 994
 995 #define TPG_ATTR(_name, _mode) TF_TPG_ATTRIB_ATTR(iscsi, _name, _mode);
 996
 997 /*
 998  * Define iscsi_tpg_attrib_s_authentication
 999  */
1000 DEF_TPG_ATTRIB(authentication);
1001 TPG_ATTR(authentication, S_IRUGO | S_IWUSR);
1002 /*
1003  * Define iscsi_tpg_attrib_s_login_timeout
1004  */
1005 DEF_TPG_ATTRIB(login_timeout);
1006 TPG_ATTR(login_timeout, S_IRUGO | S_IWUSR);
1007 /*
1008  * Define iscsi_tpg_attrib_s_netif_timeout
1009  */
1010 DEF_TPG_ATTRIB(netif_timeout);
1011 TPG_ATTR(netif_timeout, S_IRUGO | S_IWUSR);
1012 /*
1013  * Define iscsi_tpg_attrib_s_generate_node_acls
1014  */
1015 DEF_TPG_ATTRIB(generate_node_acls);
1016 TPG_ATTR(generate_node_acls, S_IRUGO | S_IWUSR);
1017 /*
1018  * Define iscsi_tpg_attrib_s_default_cmdsn_depth
1019  */
1020 DEF_TPG_ATTRIB(default_cmdsn_depth);
1021 TPG_ATTR(default_cmdsn_depth, S_IRUGO | S_IWUSR);
1022 /*
1023  Define iscsi_tpg_attrib_s_cache_dynamic_acls
1024  */
1025 DEF_TPG_ATTRIB(cache_dynamic_acls);
1026 TPG_ATTR(cache_dynamic_acls, S_IRUGO | S_IWUSR);
1027 /*
1028  * Define iscsi_tpg_attrib_s_demo_mode_write_protect
1029  */
1030 DEF_TPG_ATTRIB(demo_mode_write_protect);
1031 TPG_ATTR(demo_mode_write_protect, S_IRUGO | S_IWUSR);
1032 /*
1033  * Define iscsi_tpg_attrib_s_prod_mode_write_protect
1034  */
1035 DEF_TPG_ATTRIB(prod_mode_write_protect);
1036 TPG_ATTR(prod_mode_write_protect, S_IRUGO | S_IWUSR);
1037 /*
1038  * Define iscsi_tpg_attrib_s_demo_mode_discovery,
1039  */
1040 DEF_TPG_ATTRIB(demo_mode_discovery);
1041 TPG_ATTR(demo_mode_discovery, S_IRUGO | S_IWUSR);
1042 /*
1043  * Define iscsi_tpg_attrib_s_default_erl
1044  */
1045 DEF_TPG_ATTRIB(default_erl);
1046 TPG_ATTR(default_erl, S_IRUGO | S_IWUSR);
1047 /*
1048  * Define iscsi_tpg_attrib_s_t10_pi
1049  */
1050 DEF_TPG_ATTRIB(t10_pi);
1051 TPG_ATTR(t10_pi, S_IRUGO | S_IWUSR);
1052 /*
1053  * Define iscsi_tpg_attrib_s_fabric_prot_type
1054  */
1055 DEF_TPG_ATTRIB(fabric_prot_type);
1056 TPG_ATTR(fabric_prot_type, S_IRUGO | S_IWUSR);
1057
1058 static struct configfs_attribute *lio_target_tpg_attrib_attrs[] = {
1059         &iscsi_tpg_attrib_authentication.attr,
1060         &iscsi_tpg_attrib_login_timeout.attr,
1061         &iscsi_tpg_attrib_netif_timeout.attr,
1062         &iscsi_tpg_attrib_generate_node_acls.attr,
1063         &iscsi_tpg_attrib_default_cmdsn_depth.attr,
1064         &iscsi_tpg_attrib_cache_dynamic_acls.attr,
1065         &iscsi_tpg_attrib_demo_mode_write_protect.attr,
1066         &iscsi_tpg_attrib_prod_mode_write_protect.attr,
1067         &iscsi_tpg_attrib_demo_mode_discovery.attr,
1068         &iscsi_tpg_attrib_default_erl.attr,
1069         &iscsi_tpg_attrib_t10_pi.attr,
1070         &iscsi_tpg_attrib_fabric_prot_type.attr,
1071         NULL,
1072 };
1073
1074 /* End items for lio_target_tpg_attrib_cit */
1075
1076 /* Start items for lio_target_tpg_auth_cit */
1077
1078 #define __DEF_TPG_AUTH_STR(prefix, name, flags)                                 \
1079 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1080         struct se_portal_group *se_tpg,                                         \
1081         char *page)                                                             \
1082 {                                                                               \
1083         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1084                                 struct iscsi_portal_group, tpg_se_tpg);         \
1085         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1086                                                                                 \
1087         if (!capable(CAP_SYS_ADMIN))                                            \
1088                 return -EPERM;                                                  \
1089                                                                                 \
1090         return snprintf(page, PAGE_SIZE, "%s\n", auth->name);                   \
1091 }                                                                               \
1092                                                                                 \
1093 static ssize_t __iscsi_##prefix##_store_##name(                                 \
1094         struct se_portal_group *se_tpg,                                         \
1095         const char *page,                                                       \
1096         size_t count)                                                           \
1097 {                                                                               \
1098         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1099                                 struct iscsi_portal_group, tpg_se_tpg);         \
1100         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1101                                                                                 \
1102         if (!capable(CAP_SYS_ADMIN))                                            \
1103                 return -EPERM;                                                  \
1104                                                                                 \
1105         snprintf(auth->name, sizeof(auth->name), "%s", page);                   \
1106         if (!(strncmp("NULL", auth->name, 4)))                                  \
1107                 auth->naf_flags &= ~flags;                                      \
1108         else                                                                    \
1109                 auth->naf_flags |= flags;                                       \
1110                                                                                 \
1111         if ((auth->naf_flags & NAF_USERID_IN_SET) &&                            \
1112             (auth->naf_flags & NAF_PASSWORD_IN_SET))                            \
1113                 auth->authenticate_target = 1;                                  \
1114         else                                                                    \
1115                 auth->authenticate_target = 0;                                  \
1116                                                                                 \
1117         return count;                                                           \
1118 }
1119
1120 #define __DEF_TPG_AUTH_INT(prefix, name)                                        \
1121 static ssize_t __iscsi_##prefix##_show_##name(                                  \
1122         struct se_portal_group *se_tpg,                                         \
1123         char *page)                                                             \
1124 {                                                                               \
1125         struct iscsi_portal_group *tpg = container_of(se_tpg,                   \
1126                                 struct iscsi_portal_group, tpg_se_tpg);         \
1127         struct iscsi_node_auth *auth = &tpg->tpg_demo_auth;                     \
1128                                                                                 \
1129         if (!capable(CAP_SYS_ADMIN))                                            \
1130                 return -EPERM;                                                  \
1131                                                                                 \
1132         return snprintf(page, PAGE_SIZE, "%d\n", auth->name);                   \
1133 }
1134
1135 #define DEF_TPG_AUTH_STR(name, flags)                                           \
1136         __DEF_TPG_AUTH_STR(tpg_auth, name, flags)                               \
1137 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1138         struct se_portal_group *se_tpg,                                         \
1139         char *page)                                                             \
1140 {                                                                               \
1141         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1142 }                                                                               \
1143                                                                                 \
1144 static ssize_t iscsi_tpg_auth_store_##name(                                     \
1145         struct se_portal_group *se_tpg,                                         \
1146         const char *page,                                                       \
1147         size_t count)                                                           \
1148 {                                                                               \
1149         return __iscsi_tpg_auth_store_##name(se_tpg, page, count);              \
1150 }
1151
1152 #define DEF_TPG_AUTH_INT(name)                                                  \
1153         __DEF_TPG_AUTH_INT(tpg_auth, name)                                      \
1154 static ssize_t iscsi_tpg_auth_show_##name(                                      \
1155         struct se_portal_group *se_tpg,                                         \
1156         char *page)                                                             \
1157 {                                                                               \
1158         return __iscsi_tpg_auth_show_##name(se_tpg, page);                      \
1159 }
1160
1161 #define TPG_AUTH_ATTR(_name, _mode) TF_TPG_AUTH_ATTR(iscsi, _name, _mode);
1162 #define TPG_AUTH_ATTR_RO(_name) TF_TPG_AUTH_ATTR_RO(iscsi, _name);
1163
1164 /*
1165  *  * One-way authentication userid
1166  *   */
1167 DEF_TPG_AUTH_STR(userid, NAF_USERID_SET);
1168 TPG_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1169 /*
1170  *  * One-way authentication password
1171  *   */
1172 DEF_TPG_AUTH_STR(password, NAF_PASSWORD_SET);
1173 TPG_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1174 /*
1175  *  * Enforce mutual authentication
1176  *   */
1177 DEF_TPG_AUTH_INT(authenticate_target);
1178 TPG_AUTH_ATTR_RO(authenticate_target);
1179 /*
1180  *  * Mutual authentication userid
1181  *   */
1182 DEF_TPG_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1183 TPG_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1184 /*
1185  *  * Mutual authentication password
1186  *   */
1187 DEF_TPG_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1188 TPG_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1189
1190 static struct configfs_attribute *lio_target_tpg_auth_attrs[] = {
1191         &iscsi_tpg_auth_userid.attr,
1192         &iscsi_tpg_auth_password.attr,
1193         &iscsi_tpg_auth_authenticate_target.attr,
1194         &iscsi_tpg_auth_userid_mutual.attr,
1195         &iscsi_tpg_auth_password_mutual.attr,
1196         NULL,
1197 };
1198
1199 /* End items for lio_target_tpg_auth_cit */
1200
1201 /* Start items for lio_target_tpg_param_cit */
1202
1203 #define DEF_TPG_PARAM(name)                                             \
1204 static ssize_t iscsi_tpg_param_show_##name(                             \
1205         struct se_portal_group *se_tpg,                                 \
1206         char *page)                                                     \
1207 {                                                                       \
1208         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1209                         struct iscsi_portal_group, tpg_se_tpg);         \
1210         struct iscsi_param *param;                                      \
1211         ssize_t rb;                                                     \
1212                                                                         \
1213         if (iscsit_get_tpg(tpg) < 0)                                    \
1214                 return -EINVAL;                                         \
1215                                                                         \
1216         param = iscsi_find_param_from_key(__stringify(name),            \
1217                                 tpg->param_list);                       \
1218         if (!param) {                                                   \
1219                 iscsit_put_tpg(tpg);                                    \
1220                 return -EINVAL;                                         \
1221         }                                                               \
1222         rb = snprintf(page, PAGE_SIZE, "%s\n", param->value);           \
1223                                                                         \
1224         iscsit_put_tpg(tpg);                                            \
1225         return rb;                                                      \
1226 }                                                                       \
1227 static ssize_t iscsi_tpg_param_store_##name(                            \
1228         struct se_portal_group *se_tpg,                         \
1229         const char *page,                                               \
1230         size_t count)                                                   \
1231 {                                                                       \
1232         struct iscsi_portal_group *tpg = container_of(se_tpg,           \
1233                         struct iscsi_portal_group, tpg_se_tpg);         \
1234         char *buf;                                                      \
1235         int ret, len;                                                   \
1236                                                                         \
1237         buf = kzalloc(PAGE_SIZE, GFP_KERNEL);                           \
1238         if (!buf)                                                       \
1239                 return -ENOMEM;                                         \
1240         len = snprintf(buf, PAGE_SIZE, "%s=%s", __stringify(name), page);       \
1241         if (isspace(buf[len-1]))                                        \
1242                 buf[len-1] = '\0'; /* Kill newline */                   \
1243                                                                         \
1244         if (iscsit_get_tpg(tpg) < 0) {                                  \
1245                 kfree(buf);                                             \
1246                 return -EINVAL;                                         \
1247         }                                                               \
1248                                                                         \
1249         ret = iscsi_change_param_value(buf, tpg->param_list, 1);        \
1250         if (ret < 0)                                                    \
1251                 goto out;                                               \
1252                                                                         \
1253         kfree(buf);                                                     \
1254         iscsit_put_tpg(tpg);                                            \
1255         return count;                                                   \
1256 out:                                                                    \
1257         kfree(buf);                                                     \
1258         iscsit_put_tpg(tpg);                                            \
1259         return -EINVAL;                                         \
1260 }
1261
1262 #define TPG_PARAM_ATTR(_name, _mode) TF_TPG_PARAM_ATTR(iscsi, _name, _mode);
1263
1264 DEF_TPG_PARAM(AuthMethod);
1265 TPG_PARAM_ATTR(AuthMethod, S_IRUGO | S_IWUSR);
1266
1267 DEF_TPG_PARAM(HeaderDigest);
1268 TPG_PARAM_ATTR(HeaderDigest, S_IRUGO | S_IWUSR);
1269
1270 DEF_TPG_PARAM(DataDigest);
1271 TPG_PARAM_ATTR(DataDigest, S_IRUGO | S_IWUSR);
1272
1273 DEF_TPG_PARAM(MaxConnections);
1274 TPG_PARAM_ATTR(MaxConnections, S_IRUGO | S_IWUSR);
1275
1276 DEF_TPG_PARAM(TargetAlias);
1277 TPG_PARAM_ATTR(TargetAlias, S_IRUGO | S_IWUSR);
1278
1279 DEF_TPG_PARAM(InitialR2T);
1280 TPG_PARAM_ATTR(InitialR2T, S_IRUGO | S_IWUSR);
1281
1282 DEF_TPG_PARAM(ImmediateData);
1283 TPG_PARAM_ATTR(ImmediateData, S_IRUGO | S_IWUSR);
1284
1285 DEF_TPG_PARAM(MaxRecvDataSegmentLength);
1286 TPG_PARAM_ATTR(MaxRecvDataSegmentLength, S_IRUGO | S_IWUSR);
1287
1288 DEF_TPG_PARAM(MaxXmitDataSegmentLength);
1289 TPG_PARAM_ATTR(MaxXmitDataSegmentLength, S_IRUGO | S_IWUSR);
1290
1291 DEF_TPG_PARAM(MaxBurstLength);
1292 TPG_PARAM_ATTR(MaxBurstLength, S_IRUGO | S_IWUSR);
1293
1294 DEF_TPG_PARAM(FirstBurstLength);
1295 TPG_PARAM_ATTR(FirstBurstLength, S_IRUGO | S_IWUSR);
1296
1297 DEF_TPG_PARAM(DefaultTime2Wait);
1298 TPG_PARAM_ATTR(DefaultTime2Wait, S_IRUGO | S_IWUSR);
1299
1300 DEF_TPG_PARAM(DefaultTime2Retain);
1301 TPG_PARAM_ATTR(DefaultTime2Retain, S_IRUGO | S_IWUSR);
1302
1303 DEF_TPG_PARAM(MaxOutstandingR2T);
1304 TPG_PARAM_ATTR(MaxOutstandingR2T, S_IRUGO | S_IWUSR);
1305
1306 DEF_TPG_PARAM(DataPDUInOrder);
1307 TPG_PARAM_ATTR(DataPDUInOrder, S_IRUGO | S_IWUSR);
1308
1309 DEF_TPG_PARAM(DataSequenceInOrder);
1310 TPG_PARAM_ATTR(DataSequenceInOrder, S_IRUGO | S_IWUSR);
1311
1312 DEF_TPG_PARAM(ErrorRecoveryLevel);
1313 TPG_PARAM_ATTR(ErrorRecoveryLevel, S_IRUGO | S_IWUSR);
1314
1315 DEF_TPG_PARAM(IFMarker);
1316 TPG_PARAM_ATTR(IFMarker, S_IRUGO | S_IWUSR);
1317
1318 DEF_TPG_PARAM(OFMarker);
1319 TPG_PARAM_ATTR(OFMarker, S_IRUGO | S_IWUSR);
1320
1321 DEF_TPG_PARAM(IFMarkInt);
1322 TPG_PARAM_ATTR(IFMarkInt, S_IRUGO | S_IWUSR);
1323
1324 DEF_TPG_PARAM(OFMarkInt);
1325 TPG_PARAM_ATTR(OFMarkInt, S_IRUGO | S_IWUSR);
1326
1327 static struct configfs_attribute *lio_target_tpg_param_attrs[] = {
1328         &iscsi_tpg_param_AuthMethod.attr,
1329         &iscsi_tpg_param_HeaderDigest.attr,
1330         &iscsi_tpg_param_DataDigest.attr,
1331         &iscsi_tpg_param_MaxConnections.attr,
1332         &iscsi_tpg_param_TargetAlias.attr,
1333         &iscsi_tpg_param_InitialR2T.attr,
1334         &iscsi_tpg_param_ImmediateData.attr,
1335         &iscsi_tpg_param_MaxRecvDataSegmentLength.attr,
1336         &iscsi_tpg_param_MaxXmitDataSegmentLength.attr,
1337         &iscsi_tpg_param_MaxBurstLength.attr,
1338         &iscsi_tpg_param_FirstBurstLength.attr,
1339         &iscsi_tpg_param_DefaultTime2Wait.attr,
1340         &iscsi_tpg_param_DefaultTime2Retain.attr,
1341         &iscsi_tpg_param_MaxOutstandingR2T.attr,
1342         &iscsi_tpg_param_DataPDUInOrder.attr,
1343         &iscsi_tpg_param_DataSequenceInOrder.attr,
1344         &iscsi_tpg_param_ErrorRecoveryLevel.attr,
1345         &iscsi_tpg_param_IFMarker.attr,
1346         &iscsi_tpg_param_OFMarker.attr,
1347         &iscsi_tpg_param_IFMarkInt.attr,
1348         &iscsi_tpg_param_OFMarkInt.attr,
1349         NULL,
1350 };
1351
1352 /* End items for lio_target_tpg_param_cit */
1353
1354 /* Start items for lio_target_tpg_cit */
1355
1356 static ssize_t lio_target_tpg_show_enable(
1357         struct se_portal_group *se_tpg,
1358         char *page)
1359 {
1360         struct iscsi_portal_group *tpg = container_of(se_tpg,
1361                         struct iscsi_portal_group, tpg_se_tpg);
1362         ssize_t len;
1363
1364         spin_lock(&tpg->tpg_state_lock);
1365         len = sprintf(page, "%d\n",
1366                         (tpg->tpg_state == TPG_STATE_ACTIVE) ? 1 : 0);
1367         spin_unlock(&tpg->tpg_state_lock);
1368
1369         return len;
1370 }
1371
1372 static ssize_t lio_target_tpg_store_enable(
1373         struct se_portal_group *se_tpg,
1374         const char *page,
1375         size_t count)
1376 {
1377         struct iscsi_portal_group *tpg = container_of(se_tpg,
1378                         struct iscsi_portal_group, tpg_se_tpg);
1379         u32 op;
1380         int ret;
1381
1382         ret = kstrtou32(page, 0, &op);
1383         if (ret)
1384                 return ret;
1385         if ((op != 1) && (op != 0)) {
1386                 pr_err("Illegal value for tpg_enable: %u\n", op);
1387                 return -EINVAL;
1388         }
1389
1390         ret = iscsit_get_tpg(tpg);
1391         if (ret < 0)
1392                 return -EINVAL;
1393
1394         if (op) {
1395                 ret = iscsit_tpg_enable_portal_group(tpg);
1396                 if (ret < 0)
1397                         goto out;
1398         } else {
1399                 /*
1400                  * iscsit_tpg_disable_portal_group() assumes force=1
1401                  */
1402                 ret = iscsit_tpg_disable_portal_group(tpg, 1);
1403                 if (ret < 0)
1404                         goto out;
1405         }
1406
1407         iscsit_put_tpg(tpg);
1408         return count;
1409 out:
1410         iscsit_put_tpg(tpg);
1411         return -EINVAL;
1412 }
1413
1414 TF_TPG_BASE_ATTR(lio_target, enable, S_IRUGO | S_IWUSR);
1415
1416 static ssize_t lio_target_tpg_show_dynamic_sessions(
1417         struct se_portal_group *se_tpg,
1418         char *page)
1419 {
1420         return target_show_dynamic_sessions(se_tpg, page);
1421 }
1422
1423 TF_TPG_BASE_ATTR_RO(lio_target, dynamic_sessions);
1424
1425 static struct configfs_attribute *lio_target_tpg_attrs[] = {
1426         &lio_target_tpg_enable.attr,
1427         &lio_target_tpg_dynamic_sessions.attr,
1428         NULL,
1429 };
1430
1431 /* End items for lio_target_tpg_cit */
1432
1433 /* Start items for lio_target_tiqn_cit */
1434
1435 static struct se_portal_group *lio_target_tiqn_addtpg(
1436         struct se_wwn *wwn,
1437         struct config_group *group,
1438         const char *name)
1439 {
1440         struct iscsi_portal_group *tpg;
1441         struct iscsi_tiqn *tiqn;
1442         char *tpgt_str;
1443         int ret;
1444         u16 tpgt;
1445
1446         tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1447         /*
1448          * Only tpgt_# directory groups can be created below
1449          * target/iscsi/iqn.superturodiskarry/
1450          */
1451         tpgt_str = strstr(name, "tpgt_");
1452         if (!tpgt_str) {
1453                 pr_err("Unable to locate \"tpgt_#\" directory"
1454                                 " group\n");
1455                 return NULL;
1456         }
1457         tpgt_str += 5; /* Skip ahead of "tpgt_" */
1458         ret = kstrtou16(tpgt_str, 0, &tpgt);
1459         if (ret)
1460                 return NULL;
1461
1462         tpg = iscsit_alloc_portal_group(tiqn, tpgt);
1463         if (!tpg)
1464                 return NULL;
1465
1466         ret = core_tpg_register(&iscsi_ops, wwn, &tpg->tpg_se_tpg,
1467                                 tpg, TRANSPORT_TPG_TYPE_NORMAL);
1468         if (ret < 0)
1469                 return NULL;
1470
1471         ret = iscsit_tpg_add_portal_group(tiqn, tpg);
1472         if (ret != 0)
1473                 goto out;
1474
1475         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1476         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated TPG: %s\n",
1477                         name);
1478         return &tpg->tpg_se_tpg;
1479 out:
1480         core_tpg_deregister(&tpg->tpg_se_tpg);
1481         kfree(tpg);
1482         return NULL;
1483 }
1484
1485 static void lio_target_tiqn_deltpg(struct se_portal_group *se_tpg)
1486 {
1487         struct iscsi_portal_group *tpg;
1488         struct iscsi_tiqn *tiqn;
1489
1490         tpg = container_of(se_tpg, struct iscsi_portal_group, tpg_se_tpg);
1491         tiqn = tpg->tpg_tiqn;
1492         /*
1493          * iscsit_tpg_del_portal_group() assumes force=1
1494          */
1495         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> Releasing TPG\n");
1496         iscsit_tpg_del_portal_group(tiqn, tpg, 1);
1497 }
1498
1499 /* End items for lio_target_tiqn_cit */
1500
1501 /* Start LIO-Target TIQN struct contig_item lio_target_cit */
1502
1503 static ssize_t lio_target_wwn_show_attr_lio_version(
1504         struct target_fabric_configfs *tf,
1505         char *page)
1506 {
1507         return sprintf(page, "Datera Inc. iSCSI Target "ISCSIT_VERSION"\n");
1508 }
1509
1510 TF_WWN_ATTR_RO(lio_target, lio_version);
1511
1512 static struct configfs_attribute *lio_target_wwn_attrs[] = {
1513         &lio_target_wwn_lio_version.attr,
1514         NULL,
1515 };
1516
1517 static struct se_wwn *lio_target_call_coreaddtiqn(
1518         struct target_fabric_configfs *tf,
1519         struct config_group *group,
1520         const char *name)
1521 {
1522         struct config_group *stats_cg;
1523         struct iscsi_tiqn *tiqn;
1524
1525         tiqn = iscsit_add_tiqn((unsigned char *)name);
1526         if (IS_ERR(tiqn))
1527                 return ERR_CAST(tiqn);
1528         /*
1529          * Setup struct iscsi_wwn_stat_grps for se_wwn->fabric_stat_group.
1530          */
1531         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1532
1533         stats_cg->default_groups = kmalloc(sizeof(struct config_group *) * 6,
1534                                 GFP_KERNEL);
1535         if (!stats_cg->default_groups) {
1536                 pr_err("Unable to allocate memory for"
1537                                 " stats_cg->default_groups\n");
1538                 iscsit_del_tiqn(tiqn);
1539                 return ERR_PTR(-ENOMEM);
1540         }
1541
1542         stats_cg->default_groups[0] = &tiqn->tiqn_stat_grps.iscsi_instance_group;
1543         stats_cg->default_groups[1] = &tiqn->tiqn_stat_grps.iscsi_sess_err_group;
1544         stats_cg->default_groups[2] = &tiqn->tiqn_stat_grps.iscsi_tgt_attr_group;
1545         stats_cg->default_groups[3] = &tiqn->tiqn_stat_grps.iscsi_login_stats_group;
1546         stats_cg->default_groups[4] = &tiqn->tiqn_stat_grps.iscsi_logout_stats_group;
1547         stats_cg->default_groups[5] = NULL;
1548         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_instance_group,
1549                         "iscsi_instance", &iscsi_stat_instance_cit);
1550         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_sess_err_group,
1551                         "iscsi_sess_err", &iscsi_stat_sess_err_cit);
1552         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_tgt_attr_group,
1553                         "iscsi_tgt_attr", &iscsi_stat_tgt_attr_cit);
1554         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_login_stats_group,
1555                         "iscsi_login_stats", &iscsi_stat_login_cit);
1556         config_group_init_type_name(&tiqn->tiqn_stat_grps.iscsi_logout_stats_group,
1557                         "iscsi_logout_stats", &iscsi_stat_logout_cit);
1558
1559         pr_debug("LIO_Target_ConfigFS: REGISTER -> %s\n", tiqn->tiqn);
1560         pr_debug("LIO_Target_ConfigFS: REGISTER -> Allocated Node:"
1561                         " %s\n", name);
1562         return &tiqn->tiqn_wwn;
1563 }
1564
1565 static void lio_target_call_coredeltiqn(
1566         struct se_wwn *wwn)
1567 {
1568         struct iscsi_tiqn *tiqn = container_of(wwn, struct iscsi_tiqn, tiqn_wwn);
1569         struct config_item *df_item;
1570         struct config_group *stats_cg;
1571         int i;
1572
1573         stats_cg = &tiqn->tiqn_wwn.fabric_stat_group;
1574         for (i = 0; stats_cg->default_groups[i]; i++) {
1575                 df_item = &stats_cg->default_groups[i]->cg_item;
1576                 stats_cg->default_groups[i] = NULL;
1577                 config_item_put(df_item);
1578         }
1579         kfree(stats_cg->default_groups);
1580
1581         pr_debug("LIO_Target_ConfigFS: DEREGISTER -> %s\n",
1582                         tiqn->tiqn);
1583         iscsit_del_tiqn(tiqn);
1584 }
1585
1586 /* End LIO-Target TIQN struct contig_lio_target_cit */
1587
1588 /* Start lio_target_discovery_auth_cit */
1589
1590 #define DEF_DISC_AUTH_STR(name, flags)                                  \
1591         __DEF_NACL_AUTH_STR(disc, name, flags)                          \
1592 static ssize_t iscsi_disc_show_##name(                                  \
1593         struct target_fabric_configfs *tf,                              \
1594         char *page)                                                     \
1595 {                                                                       \
1596         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1597                 page);                                                  \
1598 }                                                                       \
1599 static ssize_t iscsi_disc_store_##name(                                 \
1600         struct target_fabric_configfs *tf,                              \
1601         const char *page,                                               \
1602         size_t count)                                                   \
1603 {                                                                       \
1604         return __iscsi_disc_store_##name(&iscsit_global->discovery_acl, \
1605                 page, count);                                           \
1606 }
1607
1608 #define DEF_DISC_AUTH_INT(name)                                         \
1609         __DEF_NACL_AUTH_INT(disc, name)                                 \
1610 static ssize_t iscsi_disc_show_##name(                                  \
1611         struct target_fabric_configfs *tf,                              \
1612         char *page)                                                     \
1613 {                                                                       \
1614         return __iscsi_disc_show_##name(&iscsit_global->discovery_acl,  \
1615                         page);                                          \
1616 }
1617
1618 #define DISC_AUTH_ATTR(_name, _mode) TF_DISC_ATTR(iscsi, _name, _mode)
1619 #define DISC_AUTH_ATTR_RO(_name) TF_DISC_ATTR_RO(iscsi, _name)
1620
1621 /*
1622  * One-way authentication userid
1623  */
1624 DEF_DISC_AUTH_STR(userid, NAF_USERID_SET);
1625 DISC_AUTH_ATTR(userid, S_IRUGO | S_IWUSR);
1626 /*
1627  * One-way authentication password
1628  */
1629 DEF_DISC_AUTH_STR(password, NAF_PASSWORD_SET);
1630 DISC_AUTH_ATTR(password, S_IRUGO | S_IWUSR);
1631 /*
1632  * Enforce mutual authentication
1633  */
1634 DEF_DISC_AUTH_INT(authenticate_target);
1635 DISC_AUTH_ATTR_RO(authenticate_target);
1636 /*
1637  * Mutual authentication userid
1638  */
1639 DEF_DISC_AUTH_STR(userid_mutual, NAF_USERID_IN_SET);
1640 DISC_AUTH_ATTR(userid_mutual, S_IRUGO | S_IWUSR);
1641 /*
1642  * Mutual authentication password
1643  */
1644 DEF_DISC_AUTH_STR(password_mutual, NAF_PASSWORD_IN_SET);
1645 DISC_AUTH_ATTR(password_mutual, S_IRUGO | S_IWUSR);
1646
1647 /*
1648  * enforce_discovery_auth
1649  */
1650 static ssize_t iscsi_disc_show_enforce_discovery_auth(
1651         struct target_fabric_configfs *tf,
1652         char *page)
1653 {
1654         struct iscsi_node_auth *discovery_auth = &iscsit_global->discovery_acl.node_auth;
1655
1656         return sprintf(page, "%d\n", discovery_auth->enforce_discovery_auth);
1657 }
1658
1659 static ssize_t iscsi_disc_store_enforce_discovery_auth(
1660         struct target_fabric_configfs *tf,
1661         const char *page,
1662         size_t count)
1663 {
1664         struct iscsi_param *param;
1665         struct iscsi_portal_group *discovery_tpg = iscsit_global->discovery_tpg;
1666         u32 op;
1667         int err;
1668
1669         err = kstrtou32(page, 0, &op);
1670         if (err)
1671                 return -EINVAL;
1672         if ((op != 1) && (op != 0)) {
1673                 pr_err("Illegal value for enforce_discovery_auth:"
1674                                 " %u\n", op);
1675                 return -EINVAL;
1676         }
1677
1678         if (!discovery_tpg) {
1679                 pr_err("iscsit_global->discovery_tpg is NULL\n");
1680                 return -EINVAL;
1681         }
1682
1683         param = iscsi_find_param_from_key(AUTHMETHOD,
1684                                 discovery_tpg->param_list);
1685         if (!param)
1686                 return -EINVAL;
1687
1688         if (op) {
1689                 /*
1690                  * Reset the AuthMethod key to CHAP.
1691                  */
1692                 if (iscsi_update_param_value(param, CHAP) < 0)
1693                         return -EINVAL;
1694
1695                 discovery_tpg->tpg_attrib.authentication = 1;
1696                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 1;
1697                 pr_debug("LIO-CORE[0] Successfully enabled"
1698                         " authentication enforcement for iSCSI"
1699                         " Discovery TPG\n");
1700         } else {
1701                 /*
1702                  * Reset the AuthMethod key to CHAP,None
1703                  */
1704                 if (iscsi_update_param_value(param, "CHAP,None") < 0)
1705                         return -EINVAL;
1706
1707                 discovery_tpg->tpg_attrib.authentication = 0;
1708                 iscsit_global->discovery_acl.node_auth.enforce_discovery_auth = 0;
1709                 pr_debug("LIO-CORE[0] Successfully disabled"
1710                         " authentication enforcement for iSCSI"
1711                         " Discovery TPG\n");
1712         }
1713
1714         return count;
1715 }
1716
1717 DISC_AUTH_ATTR(enforce_discovery_auth, S_IRUGO | S_IWUSR);
1718
1719 static struct configfs_attribute *lio_target_discovery_auth_attrs[] = {
1720         &iscsi_disc_userid.attr,
1721         &iscsi_disc_password.attr,
1722         &iscsi_disc_authenticate_target.attr,
1723         &iscsi_disc_userid_mutual.attr,
1724         &iscsi_disc_password_mutual.attr,
1725         &iscsi_disc_enforce_discovery_auth.attr,
1726         NULL,
1727 };
1728
1729 /* End lio_target_discovery_auth_cit */
1730
1731 /* Start functions for target_core_fabric_ops */
1732
1733 static char *iscsi_get_fabric_name(void)
1734 {
1735         return "iSCSI";
1736 }
1737
1738 static u32 iscsi_get_task_tag(struct se_cmd *se_cmd)
1739 {
1740         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1741
1742         /* only used for printks or comparism with ->ref_task_tag */
1743         return (__force u32)cmd->init_task_tag;
1744 }
1745
1746 static int iscsi_get_cmd_state(struct se_cmd *se_cmd)
1747 {
1748         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1749
1750         return cmd->i_state;
1751 }
1752
1753 static u32 lio_sess_get_index(struct se_session *se_sess)
1754 {
1755         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1756
1757         return sess->session_index;
1758 }
1759
1760 static u32 lio_sess_get_initiator_sid(
1761         struct se_session *se_sess,
1762         unsigned char *buf,
1763         u32 size)
1764 {
1765         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1766         /*
1767          * iSCSI Initiator Session Identifier from RFC-3720.
1768          */
1769         return snprintf(buf, size, "%6phN", sess->isid);
1770 }
1771
1772 static int lio_queue_data_in(struct se_cmd *se_cmd)
1773 {
1774         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1775
1776         cmd->i_state = ISTATE_SEND_DATAIN;
1777         cmd->conn->conn_transport->iscsit_queue_data_in(cmd->conn, cmd);
1778
1779         return 0;
1780 }
1781
1782 static int lio_write_pending(struct se_cmd *se_cmd)
1783 {
1784         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1785         struct iscsi_conn *conn = cmd->conn;
1786
1787         if (!cmd->immediate_data && !cmd->unsolicited_data)
1788                 return conn->conn_transport->iscsit_get_dataout(conn, cmd, false);
1789
1790         return 0;
1791 }
1792
1793 static int lio_write_pending_status(struct se_cmd *se_cmd)
1794 {
1795         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1796         int ret;
1797
1798         spin_lock_bh(&cmd->istate_lock);
1799         ret = !(cmd->cmd_flags & ICF_GOT_LAST_DATAOUT);
1800         spin_unlock_bh(&cmd->istate_lock);
1801
1802         return ret;
1803 }
1804
1805 static int lio_queue_status(struct se_cmd *se_cmd)
1806 {
1807         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1808
1809         cmd->i_state = ISTATE_SEND_STATUS;
1810
1811         if (cmd->se_cmd.scsi_status || cmd->sense_reason) {
1812                 iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1813                 return 0;
1814         }
1815         cmd->conn->conn_transport->iscsit_queue_status(cmd->conn, cmd);
1816
1817         return 0;
1818 }
1819
1820 static void lio_queue_tm_rsp(struct se_cmd *se_cmd)
1821 {
1822         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1823
1824         cmd->i_state = ISTATE_SEND_TASKMGTRSP;
1825         iscsit_add_cmd_to_response_queue(cmd, cmd->conn, cmd->i_state);
1826 }
1827
1828 static void lio_aborted_task(struct se_cmd *se_cmd)
1829 {
1830         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1831
1832         cmd->conn->conn_transport->iscsit_aborted_task(cmd->conn, cmd);
1833 }
1834
1835 static char *lio_tpg_get_endpoint_wwn(struct se_portal_group *se_tpg)
1836 {
1837         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1838
1839         return &tpg->tpg_tiqn->tiqn[0];
1840 }
1841
1842 static u16 lio_tpg_get_tag(struct se_portal_group *se_tpg)
1843 {
1844         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1845
1846         return tpg->tpgt;
1847 }
1848
1849 static u32 lio_tpg_get_default_depth(struct se_portal_group *se_tpg)
1850 {
1851         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1852
1853         return tpg->tpg_attrib.default_cmdsn_depth;
1854 }
1855
1856 static int lio_tpg_check_demo_mode(struct se_portal_group *se_tpg)
1857 {
1858         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1859
1860         return tpg->tpg_attrib.generate_node_acls;
1861 }
1862
1863 static int lio_tpg_check_demo_mode_cache(struct se_portal_group *se_tpg)
1864 {
1865         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1866
1867         return tpg->tpg_attrib.cache_dynamic_acls;
1868 }
1869
1870 static int lio_tpg_check_demo_mode_write_protect(
1871         struct se_portal_group *se_tpg)
1872 {
1873         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1874
1875         return tpg->tpg_attrib.demo_mode_write_protect;
1876 }
1877
1878 static int lio_tpg_check_prod_mode_write_protect(
1879         struct se_portal_group *se_tpg)
1880 {
1881         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1882
1883         return tpg->tpg_attrib.prod_mode_write_protect;
1884 }
1885
1886 static int lio_tpg_check_prot_fabric_only(
1887         struct se_portal_group *se_tpg)
1888 {
1889         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1890         /*
1891          * Only report fabric_prot_type if t10_pi has also been enabled
1892          * for incoming ib_isert sessions.
1893          */
1894         if (!tpg->tpg_attrib.t10_pi)
1895                 return 0;
1896
1897         return tpg->tpg_attrib.fabric_prot_type;
1898 }
1899
1900 static void lio_tpg_release_fabric_acl(
1901         struct se_portal_group *se_tpg,
1902         struct se_node_acl *se_acl)
1903 {
1904         struct iscsi_node_acl *acl = container_of(se_acl,
1905                                 struct iscsi_node_acl, se_node_acl);
1906         kfree(acl);
1907 }
1908
1909 /*
1910  * Called with spin_lock_bh(struct se_portal_group->session_lock) held..
1911  *
1912  * Also, this function calls iscsit_inc_session_usage_count() on the
1913  * struct iscsi_session in question.
1914  */
1915 static int lio_tpg_shutdown_session(struct se_session *se_sess)
1916 {
1917         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1918
1919         spin_lock(&sess->conn_lock);
1920         if (atomic_read(&sess->session_fall_back_to_erl0) ||
1921             atomic_read(&sess->session_logout) ||
1922             (sess->time2retain_timer_flags & ISCSI_TF_EXPIRED)) {
1923                 spin_unlock(&sess->conn_lock);
1924                 return 0;
1925         }
1926         atomic_set(&sess->session_reinstatement, 1);
1927         spin_unlock(&sess->conn_lock);
1928
1929         iscsit_stop_time2retain_timer(sess);
1930         iscsit_stop_session(sess, 1, 1);
1931
1932         return 1;
1933 }
1934
1935 /*
1936  * Calls iscsit_dec_session_usage_count() as inverse of
1937  * lio_tpg_shutdown_session()
1938  */
1939 static void lio_tpg_close_session(struct se_session *se_sess)
1940 {
1941         struct iscsi_session *sess = se_sess->fabric_sess_ptr;
1942         /*
1943          * If the iSCSI Session for the iSCSI Initiator Node exists,
1944          * forcefully shutdown the iSCSI NEXUS.
1945          */
1946         iscsit_close_session(sess);
1947 }
1948
1949 static u32 lio_tpg_get_inst_index(struct se_portal_group *se_tpg)
1950 {
1951         struct iscsi_portal_group *tpg = se_tpg->se_tpg_fabric_ptr;
1952
1953         return tpg->tpg_tiqn->tiqn_index;
1954 }
1955
1956 static void lio_set_default_node_attributes(struct se_node_acl *se_acl)
1957 {
1958         struct iscsi_node_acl *acl = container_of(se_acl, struct iscsi_node_acl,
1959                                 se_node_acl);
1960         struct se_portal_group *se_tpg = se_acl->se_tpg;
1961         struct iscsi_portal_group *tpg = container_of(se_tpg,
1962                                 struct iscsi_portal_group, tpg_se_tpg);
1963
1964         acl->node_attrib.nacl = acl;
1965         iscsit_set_default_node_attribues(acl, tpg);
1966 }
1967
1968 static int lio_check_stop_free(struct se_cmd *se_cmd)
1969 {
1970         return target_put_sess_cmd(se_cmd->se_sess, se_cmd);
1971 }
1972
1973 static void lio_release_cmd(struct se_cmd *se_cmd)
1974 {
1975         struct iscsi_cmd *cmd = container_of(se_cmd, struct iscsi_cmd, se_cmd);
1976
1977         pr_debug("Entering lio_release_cmd for se_cmd: %p\n", se_cmd);
1978         iscsit_release_cmd(cmd);
1979 }
1980
1981 const struct target_core_fabric_ops iscsi_ops = {
1982         .module                         = THIS_MODULE,
1983         .name                           = "iscsi",
1984         .get_fabric_name                = iscsi_get_fabric_name,
1985         .get_fabric_proto_ident         = iscsi_get_fabric_proto_ident,
1986         .tpg_get_wwn                    = lio_tpg_get_endpoint_wwn,
1987         .tpg_get_tag                    = lio_tpg_get_tag,
1988         .tpg_get_default_depth          = lio_tpg_get_default_depth,
1989         .tpg_get_pr_transport_id        = iscsi_get_pr_transport_id,
1990         .tpg_get_pr_transport_id_len    = iscsi_get_pr_transport_id_len,
1991         .tpg_parse_pr_out_transport_id  = iscsi_parse_pr_out_transport_id,
1992         .tpg_check_demo_mode            = lio_tpg_check_demo_mode,
1993         .tpg_check_demo_mode_cache      = lio_tpg_check_demo_mode_cache,
1994         .tpg_check_demo_mode_write_protect =
1995                         lio_tpg_check_demo_mode_write_protect,
1996         .tpg_check_prod_mode_write_protect =
1997                         lio_tpg_check_prod_mode_write_protect,
1998         .tpg_check_prot_fabric_only     = &lio_tpg_check_prot_fabric_only,
1999         .tpg_alloc_fabric_acl           = lio_tpg_alloc_fabric_acl,
2000         .tpg_release_fabric_acl         = lio_tpg_release_fabric_acl,
2001         .tpg_get_inst_index             = lio_tpg_get_inst_index,
2002         .check_stop_free                = lio_check_stop_free,
2003         .release_cmd                    = lio_release_cmd,
2004         .shutdown_session               = lio_tpg_shutdown_session,
2005         .close_session                  = lio_tpg_close_session,
2006         .sess_get_index                 = lio_sess_get_index,
2007         .sess_get_initiator_sid         = lio_sess_get_initiator_sid,
2008         .write_pending                  = lio_write_pending,
2009         .write_pending_status           = lio_write_pending_status,
2010         .set_default_node_attributes    = lio_set_default_node_attributes,
2011         .get_task_tag                   = iscsi_get_task_tag,
2012         .get_cmd_state                  = iscsi_get_cmd_state,
2013         .queue_data_in                  = lio_queue_data_in,
2014         .queue_status                   = lio_queue_status,
2015         .queue_tm_rsp                   = lio_queue_tm_rsp,
2016         .aborted_task                   = lio_aborted_task,
2017         .fabric_make_wwn                = lio_target_call_coreaddtiqn,
2018         .fabric_drop_wwn                = lio_target_call_coredeltiqn,
2019         .fabric_make_tpg                = lio_target_tiqn_addtpg,
2020         .fabric_drop_tpg                = lio_target_tiqn_deltpg,
2021         .fabric_make_np                 = lio_target_call_addnptotpg,
2022         .fabric_drop_np                 = lio_target_call_delnpfromtpg,
2023         .fabric_make_nodeacl            = lio_target_make_nodeacl,
2024         .fabric_drop_nodeacl            = lio_target_drop_nodeacl,
2025
2026         .tfc_discovery_attrs            = lio_target_discovery_auth_attrs,
2027         .tfc_wwn_attrs                  = lio_target_wwn_attrs,
2028         .tfc_tpg_base_attrs             = lio_target_tpg_attrs,
2029         .tfc_tpg_attrib_attrs           = lio_target_tpg_attrib_attrs,
2030         .tfc_tpg_auth_attrs             = lio_target_tpg_auth_attrs,
2031         .tfc_tpg_param_attrs            = lio_target_tpg_param_attrs,
2032         .tfc_tpg_np_base_attrs          = lio_target_portal_attrs,
2033         .tfc_tpg_nacl_base_attrs        = lio_target_initiator_attrs,
2034         .tfc_tpg_nacl_attrib_attrs      = lio_target_nacl_attrib_attrs,
2035         .tfc_tpg_nacl_auth_attrs        = lio_target_nacl_auth_attrs,
2036         .tfc_tpg_nacl_param_attrs       = lio_target_nacl_param_attrs,
2037 };